Engine Mechanical - 4.6l (lh2) - 1 of 5 Cadillac XLR I

Removal Procedure

1. Install a 1/2 inch drive breaker bar into the belt drive tensioner.
2. Push down on the breaker bar to release tension.
3. Remove the drive belt from the tensioner pulley (1).
4. Slowly return the tensioner (6) to the original position.
5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
6. Remove the belt.

Installation Procedure

1. Thread the drive belt through all the pulleys except for the drive belt tensioner pulley.
2. Lower the vehicle.
3. Insert a 1/2 inch drive breaker bar into the drive belt tensioner.
4. Push down on the tensioner and feed the belt around the tensioner pulley.
5. With the tension applied, complete the belt routing. Make sure the belt is properly seated in all pulleys.
6. Slowly return the tensioner back to its original position. This will apply tension to the drive belt.
7. After the installation, inspect the belt for the proper routing and the correct alignment.
8. Start the engine and check for proper belt and accessory operation.

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
3. Install a wrench on the accessory drive belt tensioner (3).
4. Rotate the wrench to release tension.
5. With the tension applied, remove the belt from the power steering pulley.
6. Remove the top bolt (1) from the accessory drive belt tensioner.
7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
8. Remove bottom bolt from the accessory drive belt tensioner damper.
9. Remove the tensioner.

1. Install the accessory drive belt tensioner.
2. Tighten the accessory drive belt tensioner bolts. Tighten: Tighten the accessory drive tensioner bolts to 25 N.m (18 lb ft).
3. Lower the vehicle.
4. Attach a wrench to the tensioner (3).
5. Rotate the wrench to release the tension and feed belt around the power steering pulley.
6. With the tension applied, complete the belt routing. Ensure the belt is properly seated in all pulleys.
7. Slowly return the tensioner back to its original position. This will apply tension to the drive belt.
8. Remove the wrench.
9. Install the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
10. Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
11. Start the engine and inspect for proper belt and accessory operation.

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the drive belt tensioner bolt (2).
3. Remove the drive belt tensioner (1).

1. Install the drive belt tensioner (1).
2. Install the drive belt tensioner bolt (2). Tighten: Tighten the drive belt tensioner bolt to 50 N.m (37 lb ft).
3. Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
3. Install a wrench on the accessory drive belt tensioner (3).
4. Rotate the wrench to release tension.
5. With the tension applied, remove the belt from the power steering pulley.
6. Remove the top bolt (1) from the accessory drive belt tensioner.
7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
8. Remove bottom bolt (2) from the accessory drive belt tensioner damper.
9. Remove the tensioner.

1. Install the accessory drive belt tensioner.
2. Tighten the accessory drive belt tensioner bolts. Tighten: Tighten the accessory drive tensioner bolts to 25 N.m (18 lb ft).
3. Lower the vehicle.
4. Attach a wrench to the tensioner.
5. Rotate the wrench to release the tension and feed belt around the power steering pulley.
6. With the tension applied, complete the belt routing. Ensure the belt is properly seated in all pulleys.
7. Slowly return the tensioner back to its original position. This will apply tension to the drive belt.
8. Remove the wrench.
9. Install the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
10. Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
11. Start the engine and inspect for proper belt and accessory operation.

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the drive belt idler pulley bolt.
3. Remove the drive belt idler pulley.

1. Install the drive belt idler pulley.
2. Install the drive belt idler pulley bolt. Tighten: Tighten the drive belt idler pulley bolt to 50 N.m (37 lb ft).
3. Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Engine Support Fixture

Tools Required

1. J 28467-B Universal Engine Support Fixture
2. J 28467-81 Engine Support Fixture Kit

1. Remove the hood.
2. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Remove the battery negative cable bolt (3) from the RH rear of cylinder head and position the battery negative cable (2) aside.
4. Install the J 28467-86 Right Engine Lift Bracket to the right cylinder head.
5. Remove the bolt securing the wiring harness to the left cylinder head.
6. Install the J 28467-87 Left Engine Lift Bracket to the left cylinder head.
7. Assemble a J 28467-83 Rear Crossbar Supports (2) to each end of the J 28467-3 Rear Crossbar (1).
8. Position the rear crossbar assembly (1, 2, 3) over the hood hinge brackets with the support located over each hood safety catch bracket.
9. Assemble a J 28467-82 Front Crossbar Legs (1) to each end of the J 28467-85 Front Crossbar.
10. Install the 0.5 in X 2.5 in J 28467-10 Quick Release Pins (4).
11. Place the front crossbar assembly with supporting legs on the right and left frame rails. Each leg should rest in the shock absorber upper mount on the frame rail.
12. Install the right (4) and left (3) side bars over the front and rear crossbars.
13. Install the J 28467-1A assembly and hand tighten.
14. Repeat steps 12 and 13 for the remaining three corners of the support fixture assembly.
15. Install the J 28467-7A lift hook through the J 28467-6A lift hook bracket.
16. Install the 1/2 inch lift hook washer and the J 28467-34 lift hook wing nut onto the J 28467-7A lift hook.
17. Install the J 28467-6A assembled lift hook (1) over the J 28467-84 left side bar (2).
18. Adjust the J 28467-6A assembled lift hook bracket (1) in order to align the hook with the J 28467-87 left engine lift hook bracket.
19. Repeat step 18 for the right lift bracket (3).
20. Install each J 28467-7A lift hook through each engine lift hook bracket. Ensure that the hooks do not damage the surrounding components.
21. Hand-tighten the J 28467-34 lift hook wing nuts securely to remove all slack from the engine support fixture assembly.

1. Remove the EN 47519 . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__special-tools) .
2. Remove the J 28467-87 left engine lift bracket from the left cylinder head.
3. Install the bolt securing the wiring harness to the left cylinder head.
4. Remove the J 28467-86 right engine lift bracket from the right cylinder head.
5. Position the negative battery cable (1) to the right rear cylinder head and install the negative battery cable bolt (3). Tighten: Tighten the negative battery cable bolt to 37 N.m (27 lb ft).
6. Install the hood. Refer to «Hood Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) .

Engine Mount Inspection

Note. Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the remaining mounts are subjected to abnormally high stresses.

Note. When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.

1. Measure the engine movement at the engine mount in order to check for damage to the rubber portions of the mount. Apply the park brake. Start the engine. Firmly apply and hold the primary brakes. Have an assistant stand to the side of the vehicle in order to observe for engine movement. Slightly load the engine shifting from drive to reverse a few times. If the engine moves more than 24 mm (0.945 in) from the at rest position, in either direction, check for loose engine mount or engine mount bracket attachments.
2. If the engine mount and engine mount bracket bolt torque is at specifications, check the condition of the engine mount.
3. Replace the engine mount if any of the following conditions exist: Heat check cracks cover the rubber cushion surface. The rubber cushion is separated from the metal plate of the mount. There is a split through the rubber cushion.

1. Remove the front suspension crossmember. Refer to «Front Suspension Crossmember Replacement»(/cadillac/xlr/i-2003-2009/remont/frames-subframes-crossmembers/#frame-and-underbody) .
2. Remove the engine mount-to-engine mount bracket nut.
3. Remove the engine mount from the engine mount bracket.
4. Remove the engine mount heat shield from the engine mount.

1. Install the engine mount heat shield to the engine mount.
2. Position the engine mount to the engine mount bracket.
3. Install the engine mount-to-engine mount bracket nut. Tighten: Tighten the nut to 58 N.m (43 lb ft).
4. Install the front suspension crossmember. Refer to «Front Suspension Crossmember Replacement»(/cadillac/xlr/i-2003-2009/remont/frames-subframes-crossmembers/#frame-and-underbody) .

1. Remove the front suspension crossmember. Refer to «Front Suspension Crossmember Replacement»(/cadillac/xlr/i-2003-2009/remont/frames-subframes-crossmembers/#frame-and-underbody) .
2. Remove the engine mount-to-engine mount bracket nut.
3. Remove the engine mount from the engine mount bracket.
4. Remove the engine mount heat shield from the engine mount.

1. Install the engine mount heat shield to the engine mount.
2. Position the engine mount to the engine mount bracket.
3. Install the engine mount-to-engine mount bracket nut. Tighten: Tighten the nut to 58 N.m (43 lb ft).
4. Install the front suspension crossmember. Refer to «Front Suspension Crossmember Replacement»(/cadillac/xlr/i-2003-2009/remont/frames-subframes-crossmembers/#frame-and-underbody) .

1. Remove the left engine mount. Refer to «Engine Mount Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .
2. Remove the engine mount bracket bolts.
3. Remove the engine mount bracket.

1. Install the engine mount bracket. NOTE: Refer to «Fastener Notice»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#cautions-and-notices__fastener-notice) .
2. Install the engine mount bracket bolts. Tighten: Tighten the engine mount bracket bolts to 58 N.m (43 lb ft).
3. Install the left engine mount. Refer to «Engine Mount Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .

1. Remove the right engine mount. Refer to «Engine Mount Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .
2. Remove the engine mount bracket bolts.
3. Remove the engine mount bracket.

1. Install the engine mount bracket.
2. Install the engine mount bracket bolts. Tighten: Tighten the engine mount bracket bolts to 58 N.m (43 lb ft).
3. Install the right engine mount. Refer to «Engine Mount Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .

1. Remove the oil fill cap from the left camshaft cover
2. Remove the oil level indicator.
3. Lift the sight shield from the front and pull forward to disengage the rear tabs from the bracket.

1. Align the rear tab with the slot in the rear bracket and push the sight shield inward to engage.
2. Install the oil level indicator.
3. Install the oil fill cap to the left camshaft cover

1. Remove the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Disconnect the positive crankcase ventilation (PCV) fresh air tube from the left camshaft cover.
3. Remove the PCV fresh air tube from the air cleaner housing assembly.
4. Disconnect the PCV dirty air tube from the right camshaft cover.
5. Remove the PCV dirty air tube (2) from the intake manifold.

1. Connect the PCV dirty air tube to the intake manifold fitting.
2. Connect the PCV dirty air tube to the right camshaft cover.
3. Attach the retaining clip (3) to the intake manifold.
4. Connect the PCV fresh air tube to the left camshaft cover.
5. Connect the PCV fresh air tube to the air cleaner housing.
6. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the fuel rail assembly. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
2. Loosen the plenum duct clamp at the front of the intake manifold.
3. Remove 10 bolts attaching the intake manifold to the cylinder heads.
4. Remove the intake manifold by using an upward lifting motion at the rear of the manifold assembly.
5. Clean and inspect the intake manifold. Refer to «Intake Manifold Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-4-of-5) .

1. Lightly lubricate the inside edge of the rubber plenum duct.
2. Clean any debris from the cylinder head and intake manifold.
3. Install the new gaskets to the intake manifold.
4. Place the intake manifold in position by completing the following: Position the front of the intake manifold (1) into the plenum duct (2). Position the rear of the intake manifold (1) downward on to the cylinders heads.
5. Loosely install the 10 bolts attaching the intake manifold (1) to the cylinder heads.
6. Tighten the intake manifold bolts in sequence (1-10). Tighten: Tighten the intake manifold bolts to 10 N.m (89 lb in).
7. Ensure that the plenum duct is fully attached to the front of the intake manifold. Tighten: Tighten the plenum duct clamp (1) to 2.25 N.m (20 lb in).
8. Install the fuel rail assembly. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
9. To clean, turn the ignition switch to the ON position for 2 seconds, then turn to the OFF position for 10 seconds. Again turn to the ON position and check for fuel leaks.
10. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the oil level indicator.
2. Remove the oil level indicator tube bolt.
3. Disconnect the coolant surge tank fluid level indicator electrical connector.
4. Remove the surge tank nuts and reposition the surge tank away from the brake master cylinder.
5. Disconnect the master cylinder fluid level sensor electrical connector (1).
6. Remove the master cylinder mounting nuts and reposition the master cylinder away from the brake booster.
7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
8. Pull the oil level indicator tube from the crankcase while rotating it counterclockwise.

1. Replace the oil level indicator tube O-ring and lubricate with engine oil.
2. With the aid of an assistant, install the oil level indicator tube into the crankcase.
3. Lower the vehicle.
4. Install the oil level indictor tube bolt into the left cylinder head. Tighten: Tighten the oil level indicator tube bolt to 50 N.m (37 lb in).
5. Install the oil level indicator.
6. Reposition the brake master cylinder to the brake booster.
7. Install the master cylinder mounting nuts. Tighten: Tighten the master cylinder mounting nuts to 29 N.m (21 lb ft).
8. Connect the electrical connector (1) for the master cylinder fluid level sensor.
9. Install the coolant surge tank. Refer to «Radiator Surge Tank Replacement»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Remove the left engine mount bracket. Refer to «Engine Mount Bracket Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .
3. Disconnect the electrical connector from the engine oil pressure switch.
4. Remove the oil filter.
5. Remove the adapter mounting bolts.
6. Remove the adapter and discard the gasket.
7. Remove the engine oil pressure switch from the oil filter adapter.
8. Clean and inspect the oil filter adapter. Refer to «Oil Filter Adapter Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-4-of-5) .

1. Install the engine oil pressure switch to the oil filter adapter. Tighten: Tighten the engine oil pressure switch to 16 N.m (12 lb ft).
2. Install the new gasket.
3. Install the bolts attaching the oil filter adapter to the engine block. Tighten: Tighten the oil filter adapter bolts to 25 N.m (18 lb ft).
4. Lightly oil the replacement oil filter gasket with clean oil.
5. Install the oil filter. Tighten: Tighten the oil filter to 32 N.m (24 lb ft).
6. Connect the electrical connector (2) to the engine oil pressure switch (1).
7. Install the left engine mount bracket. Refer to «Engine Mount Bracket Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-1-of-5) .
8. Lower the vehicle.
9. Adjust the engine oil level to the full mark.
10. Inspect for oil leaks after engine start up.

Crankshaft Balancer Replacement

Tools Required

1. J 45059 Angle Meter
2. J 41816 Crankshaft Balancer Remover
3. J 41998-B Crankshaft Balancer Installer
4. EN 46326 Flywheel Holding Tool

1. Remove the accessory drive belt. Refer to «Drive Belt Replacement - Accessory»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
3. Remove the power steering gear. Refer to «Steering Gear Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
4. Remove the starter motor. Refer to «Starter Motor Replacement (LH2)»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
5. Install the EN 46326 .
6. Remove the crankshaft balancer bolt.
7. Place the remover pilot into the end of the crankshaft.
8. Install the J 41816 on the crankshaft balancer.
9. Remove the crankshaft balancer using the J 41816 .

Cleaning and Inspection

Clean and inspect the crankshaft balancer. Refer to Crankshaft Balancer Cleaning and Inspection .

1. Position the crankshaft balancer on the nose of the crankshaft.
2. Press the crankshaft balancer in place using the J 41998-B .
3. Clean the crankshaft balancer bolt threads.
4. Apply engine oil to the crankshaft balancer bolt threads.
5. Install the crankshaft balancer bolt. First Pass Tighten: Tighten the crankshaft balancer bolt to 50 N.m (37 lb ft). Final Pass Tighten: Tighten the crankshaft balancer bolt an additional 120 degrees using the J 45059 .
6. Remove the EN 46326 .
7. Install the starter motor. Refer to «Starter Motor Replacement (LH2)»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
8. Install the steering gear. Refer to «Steering Gear Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
9. Install the accessory drive belt. Refer to «Drive Belt Replacement - Accessory»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
10. Lower the vehicle.
11. Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Tools Required

J 38185 Hose Clamp Pliers. See Special Tools .

1. Drain the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) or «Cooling System Draining and Filling (GE 47716)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-ge) .
2. Remove the air outlet duct in order to gain access to the thermostat housing. Refer to «Air Cleaner Inlet Duct Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
3. Remove the heater hose from the thermostat housing using a J 38185 . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__special-tools) .
4. Remove the coolant radiator hose from the thermostat housing. Refer to «Coolant Bypass Hose Replacement (LH2)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) .
5. Remove the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
6. Remove the accessory drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
7. Remove the drive belt idler pulley bolt. Remove the drive belt idler pulley.
8. Remove the water pump pulley.
9. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
10. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
11. Remove the engine front cover bolts.
12. Remove the engine front cover.
13. Remove and discard the engine front cover gasket.

Clean and inspect the engine front cover. Refer to Engine Front Cover Cleaning and Inspection .

1. Place a small amount of sealant at the split line of the upper and lower crankcases (1), and at the top of the block face. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
2. Place the NEW engine front cover gasket over the crankcase dowel pins.
3. Place the engine front cover in position on the crankcase.
4. Apply the thread locking compound to the threads of the engine front cover bolts. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
5. Install the engine front cover retaining bolts.
6. Tighten the engine front cover bolts in the sequence shown. Tighten: Tighten the engine front cover bolts in proper sequence to 15 N.m (11 lb ft).
7. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
8. Install the water pump pulley. Tighten: Tighten the water pump pulley bolts to 10 N.m (89 lb in).
9. Install the drive belt idler pulley.
10. Install the drive belt idler pulley bolt. Tighten: Tighten the drive belt idler pulley bolt to 50 N.m (37 lb ft).
11. Install the accessory drive belt. Refer to «Drive Belt Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
12. Install the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
13. Install the coolant radiator hose to the thermostat housing. Refer to «Coolant Bypass Hose Replacement (LH2)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) .
14. Install the heater hose to the thermostat housing using a J 38185 . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__special-tools) .
15. Install the air outlet duct. Refer to «Air Cleaner Inlet Duct Replacement»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
16. Fill the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) or «Cooling System Draining and Filling (GE 47716)»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-ge) .

J 45059 Angle Meter

1. Remove the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the 3 oil pump assembly retaining bolts (1, 2, 3) identified by the larger head size.
3. Slide the oil pump assembly off the nose of the crankshaft with the drive collar in place.
4. Clean and inspect the oil pump. Refer to «Oil Pump Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Install the oil pump drive spacer (1) into the oil pump (2) so that the drive flat engages the pump rotor.
2. Position the oil pump on the crankshaft.
3. Install the retaining bolts.
4. Apply upward pressure on the pump while tightening the three retaining bolts. Tighten the bolts in the sequence (1, 2, 3) shown. Tighten: First Pass Tighten the oil pump mounting bolts in sequence to 10 N.m (89 lb in). Final Pass Tighten the oil pump mounting bolts in sequence an additional 35 degrees using the J 45059 .
5. Install the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Disconnect the electrical connector from the engine oil pressure switch.
3. Remove the engine oil pressure switch from the oil filter adapter using a snap-on S 6152 Oil Pressure Sender Switch Crowfoot Wrench™ (1 1/16") or equivalent.

1. Install a new O-ring on the oil pressure switch.
2. Install the engine oil pressure switch to the oil filter adapter using a Snap-On™ S 6152 Oil Pressure Sender Switch Crowfoot Wrench (1 1/16") or equivalent. Tighten: Tighten the engine oil pressure switch to 16 N.m (12 lb ft).
3. Connect the electrical connector to the engine oil pressure switch.
4. Lower the vehicle.
5. Adjust the engine oil level to the full mark.
6. Inspect for oil leaks after engine start up.

1. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-2-of-5) .
2. Disconnect the electrical connector from the engine oil level sensor.
3. Remove the engine oil level sensor from the oil pan.

1. Install the engine oil level sensor into the oil pan. Tighten: Tighten the engine oil level sensor to 20 N.m (15 lb ft).
2. Connect the electrical connector to the engine oil level sensor.
3. Fill the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-2-of-5) .
4. Inspect for oil leaks after engine start up.

1. Remove the engine oil pan. Refer to «Oil Pan Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-2-of-5) .
2. Remove the oil pump pipe support bracket nut.
3. Remove the oil pump pipe bolt.
4. Remove the oil pump pipe and screen assembly.
5. Remove and discard the oil pump pipe and screen assembly gasket.

1. Install a NEW gasket to the oil pump pipe and screen assembly.
2. Install the oil pump pipe and screen assembly.
3. Install the oil pump pipe and screen assembly retaining bolt and nut. Tighten: Tighten the oil pump pick-up tube nut to 24 N.m (18 lb ft). Tighten the oil pump pick-up tube bolt to 10 N.m (89 lb in).
4. Install the oil pan. Refer to «Oil Pan Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-2-of-5) .

J 39946 Crankshaft Socket

1. Remove the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Align the primary timing marks (1) using the J 39946 .
3. Remove the secondary camshaft drive chains. Refer to «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) and «Secondary Camshaft Drive Chain Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
4. Remove the primary drive chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Remove the oil outlet tube bolts (1-5).
6. Remove the oil outlet tube.
7. Remove and discard the oil outlet tube O-ring.
8. Clean and inspect the oil outlet tube. Refer to «Oil Pump Outlet Tube Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Install a NEW O-ring on the oil outlet tube.
2. Install the oil outlet tube and bolts. Tighten: Tighten the oil outlet tube bolts to 10 N.m (89 lb in).
3. Ensure the primary timing marks (1) are aligned vertically.
4. Install the primary drive chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Install the secondary camshaft drive chains. Refer to «Secondary Camshaft Drive Chain Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) and «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
6. Install the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Disconnect the vacuum hose from the brake booster. Reposition hose away from the cover.
2. Remove the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Disconnect the positive crankcase ventilation (PCV) fresh air tube from the left camshaft cover.
4. Remove the ignition module. Refer to «Ignition Coil Module Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
5. Remove the bolt connecting the ground strap to the left camshaft cover.
6. Remove the bolt securing the oil level indicator tube to the left cylinder head and reposition the tube away from the camshaft cover.
7. Remove the camshaft cover bolts.
8. Lift the camshaft drive end of the camshaft cover up.
9. Remove the camshaft cover.
10. Discard the camshaft cover gasket and spark plug port seals if there is any evidence of damage or if the seal comes out of the groove in the cover during removal.
11. Clean and inspect the camshaft cover. Refer to «Camshaft Cover Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-4-of-5) .

1. Work the camshaft cover into position by pivoting the cover down and aligning the bolt holes.
2. Install the camshaft cover bolts installing the ground strap to the camshaft cover. Tighten: Tighten the camshaft cover bolts to 10 N.m (89 lb in).
3. Connect the vacuum hose to the brake booster.
4. Install the ignition module. Refer to «Ignition Coil Module Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
5. Rotate the oil level indicator tube back into its original position and install the bolt securing the tube to the cylinder head. Tighten: Tighten the oil level indicator tube bolt to 10 N.m (89 lb in).
6. Connect the PCV fresh air tube to the left camshaft cover.
7. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
8. Connect the vacuum hose to the brake booster.

1. Remove the intake manifold sight shield from the engine. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Disconnect the PCV dirty air tube from the camshaft cover.
3. Remove the ignition module. Refer to «Ignition Coil Module Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
4. Disconnect the cable harness clips at the front of the camshaft cover and position the cable harness aside.
5. Remove the bolt connecting the ground strap to the right camshaft cover.
6. Remove the camshaft cover bolts.
7. Remove the camshaft cover.
8. Discard the camshaft cover gasket and spark plug port seals if there is any evidence of damage or if the seal comes out of the groove in the cover during removal.
9. Clean and inspect the camshaft cover. Refer to «Camshaft Cover Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-4-of-5) .

1. Install the camshaft cover gasket as required. IMPORTANT: Be careful to prevent the exposed section of the camshaft cover seal from being damaged by the edge of the cylinder head casting.
2. Install the camshaft cover.
3. Install the camshaft cover bolts installing the ground strap to the camshaft cover. Tighten: Tighten the camshaft cover bolts to 10 N.m (89 lb in).
4. Install the ignition module. Refer to «Ignition Coil Module Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
5. Connect the PCV dirty air tube (2) to the camshaft cover.
6. Position the intake manifold sight shield to the engine. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the left exhaust camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
2. Remove the left intake camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
3. Remove the left camshaft cover. Refer to «Camshaft Cover Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
4. Remove the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Remove the left intake camshaft position actuator magnet bolts.
6. Remove the left intake camshaft position actuator magnet.
7. Remove the left intake camshaft position actuator magnet alignment plug and discard.
8. Remove the left exhaust camshaft position actuator magnet bolts.
9. Remove the left exhaust camshaft position actuator magnet.
10. Remove the left exhaust camshaft position actuator magnet alignment plug and discard.
11. Remove the left camshaft position actuator housing bolts.
12. Remove the left camshaft position actuator housing.

1. Install a NEW gasket to the camshaft position actuator housing.
2. Install the left camshaft position actuator housing to the right cylinder head.
3. Install the actuator housing bolts and studs. Tighten: Tighten the actuator housing bolts and studs to 10 N.m (89 lb in).
4. To allow for camshaft position actuator solenoid to camshaft position actuator oil control valve alignment, DO NOT install NEW camshaft position actuator solenoid alignment plugs at this time.
5. Use the following procedure for the camshaft position actuator solenoid alignment: Make an alignment pin from drill rod 15/64 inch diameter and at least 50 mm (1.97 in) long. Verify that the alignment pin will pass through the camshaft position actuator solenoid alignment hole. Verify that the alignment pin will fit into the alignment hole in the camshaft position actuator oil control valve. Apply a 2 mm (0.079 in) bead of RTV around the flange of the camshaft position actuator solenoid. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number. Install the camshaft position actuator solenoid over the oil control valve. Install the alignment pin through the solenoid alignment hole and into the oil control valve alignment hole. With the alignment pin in place, install the camshaft position actuator solenoid bolts. Tighten: Tighten the camshaft position actuator solenoid bolts to 8 N.m (71 lb in). Remove the alignment pin. Install a NEW camshaft position actuator solenoid plug. Repeat steps 4 through 9 for the exhaust camshaft position actuator solenoid.
6. Install the left camshaft cover. Refer to «Camshaft Cover Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
7. Install the left intake camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
8. Install the left exhaust camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
9. Install the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the right exhaust camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
2. Remove the right intake camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
3. Remove the right camshaft cover. Refer to «Camshaft Cover Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
4. Remove the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .
5. Remove the right intake camshaft position actuator magnet bolts.
6. Remove the right intake camshaft position actuator magnet.
7. Remove the right intake camshaft position actuator magnet alignment plug and discard.
8. Remove the right exhaust camshaft position actuator magnet bolts.
9. Remove the right exhaust camshaft position actuator magnet.
10. Remove the right exhaust camshaft position actuator magnet alignment plug and discard.
11. Remove the right camshaft position actuator housing bolts.
12. Remove the right camshaft position actuator housing.

1. Install a NEW gasket to the camshaft position actuator housing.
2. Install the right camshaft position actuator housing to the right cylinder head.
3. Install the actuator housing bolts and studs. Tighten: Tighten the actuator housing bolts and studs to 10 N.m (89 lb in).
4. To allow for camshaft position actuator solenoid to camshaft position actuator oil control valve alignment, DO NOT install NEW camshaft position actuator solenoid alignment plugs at this time.
5. Use the following procedure for the camshaft position actuator solenoid alignment: Make an alignment pin from drill rod 15/64 inch diameter and at least 50 mm (1.97 in) long. Verify that the alignment pin will pass through the camshaft position actuator solenoid alignment hole. Verify that the alignment pin will fit into the alignment hole in the camshaft position actuator oil control valve. Apply a 2 mm (0.079 in) bead of RTV around the flange of the camshaft position actuator solenoid. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number. Install the camshaft position actuator solenoid over the oil control valve. Install the alignment pin through the solenoid alignment hole and into the oil control valve alignment hole. With the alignment pin in place, install the camshaft position actuator solenoid bolts. Tighten: Tighten the camshaft position actuator solenoid bolts to 8 N.m (71 lb in). Remove the alignment pin. Install a NEW camshaft position actuator solenoid plug. Repeat steps 4 through 9 for the exhaust camshaft position actuator solenoid.
6. Install the right camshaft cover. Refer to «Camshaft Cover Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
7. Install the right intake camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
8. Install the right exhaust camshaft sensor. Refer to «Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/testing-diagnostics/#engine-controls-46l-lh2-introduction-2-of-2) .
9. Install the power steering reservoir. Refer to «Remote Power Steering Fluid Reservoir Replacement»(/cadillac/xlr/i-2003-2009/remont/manual-power-steering/#power-steering-system) .

Secondary Camshaft Drive Chain Replacement - Left Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the right secondary timing chain. Refer to «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
2. Using the J 39946 , rotate the crankshaft until the primary timing gear alignment marks (1) are adjacent to each other as shown.
3. Remove the left camshaft position actuator housing. DO NOT remove the actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
4. Install the EN 46328 (1) on the Bank 2 (left) camshafts (2).
5. Loosen and remove the left secondary timing chain tensioner bolts and tensioner. Refer to «Secondary Camshaft Drive Chain Guide Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-guide-replacement) .
6. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when removing the camshaft oil control valve.
7. Loosen and remove the Bank 2 (left) exhaust camshaft position oil control valve.
8. Slide the left exhaust camshaft position actuator off of the camshaft and remove the secondary timing chain from the camshaft actuator teeth.
9. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when removing the camshaft oil control valve.
10. Loosen and remove the Bank 2 (left) intake camshaft position oil control valve.
11. Slide the left intake camshaft position actuator off of the camshaft and remove the secondary timing chain from the camshaft actuator teeth.
12. Remove the left secondary timing chain from the engine.
13. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. The secondary timing chain (2) has three black links that aid in timing the camshaft position actuators to the intermediate sprocket.
2. The black link (4) is aligned with the Bank 2 exhaust actuator timing mark. The black link (3) is aligned with the Bank 2 intake actuator timing mark.
3. The black link (1) is aligned with the intermediate sprocket.
4. The intermediate sprocket left bank timing mark is labeled left bank (LB) as shown.
5. Assemble the secondary timing chain to the intermediate sprocket aligning the sprocket LB timing mark to the timing chain black link.
6. Align the timing mark (5) of the LB intake camshaft position actuator with the timing chain black link (3) and install the actuator on the camshaft with the actuator timing mark perpendicular (90 degrees) to the cylinder head deck surface at the top of its rotation.
7. Loosely install the oil control valve (10) to secure the intake actuator.
8. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve. Tighten: Tighten the oil control valve to 120 N.m (89 lb ft).
9. Align the timing mark (7) of the LB exhaust camshaft position actuator with the timing chain black link (4) and install the actuator on the camshaft with the actuator timing mark perpendicular (90 degrees) to the cylinder head deck surface at the top of its rotation.
10. Loosely install the oil control valve (8) to secure the exhaust actuator.
11. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve. Tighten: Tighten the oil control valve to 120 N.m (89 lb ft).
12. Install the left secondary timing chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
13. Install the right secondary timing chain. Refer to «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
14. Remove the EN 46328 .
15. Install the left camshaft position actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Secondary Camshaft Drive Chain Replacement - Right Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Using the J 39946 , rotate the crankshaft until the primary timing gear marks (1) are adjacent to each other as shown.
3. Remove the right camshaft position actuator housing. DO NOT remove the actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
4. Install the EN 46328 (1) on the Bank 1 (right) camshafts (2).
5. Loosen and remove the right secondary timing chain tensioner bolts and tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement)
6. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when removing the camshaft oil control valve.
7. Loosen and remove the Bank 1 (right) exhaust camshaft position oil control valve.
8. Slide the right intake camshaft position actuator off of the camshaft and remove the secondary timing chain from the camshaft actuator teeth.
9. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when removing the camshaft oil control valve.
10. Loosen and remove the Bank 1 (right) intake camshaft position oil control valve.
11. Slide the right exhaust camshaft position actuator off of the camshaft and remove the secondary timing chain from the camshaft actuator teeth.
12. Remove the right secondary timing chain from the engine.
13. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. The secondary timing chain has three black links that aid in timing the camshaft position actuators to the intermediate sprocket.
2. The black link (2) is aligned with the Bank 1 exhaust actuator timing mark. The black link (3) is aligned with the Bank 1 intake actuator timing mark.
3. The black link (1) is aligned with the intermediate sprocket.
4. The intermediate sprocket right bank timing mark is labeled right bank (RB) as shown.
5. Assemble the secondary timing chain to the intermediate sprocket aligning the sprocket RB timing mark to the timing chain black link.
6. Align the timing mark (5) of the RB intake camshaft position actuator with the timing chain black link (8) and install the actuator on the camshaft with the actuator timing mark perpendicular (90 degrees) to the cylinder head deck surface near the top of its rotation.
7. Loosely install the oil control valve (2) to secure the intake actuator.
8. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve. Tighten: Tighten the oil control valve to 120 N.m (89 lb ft).
9. Align the timing mark (3) of the RB exhaust camshaft position actuator with the timing chain black link and install the actuator on the camshaft with the actuator timing mark perpendicular (90 degrees) to the cylinder head deck surface near the top of its rotation.
10. Loosely install the oil control valve (1) to secure the exhaust actuator.
11. Use an open-end wrench on the hex cast into the camshaft in order to prevent the camshaft from rotating when tightening the oil control valve. Tighten: Tighten the oil control valve to 120 N.m (89 lb ft).
12. Install the right secondary timing chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
13. Remove the EN 46328 .
14. Install the right camshaft position actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
15. Install the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Secondary Camshaft Drive Chain Tensioner Replacement - Left Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the left camshaft cover. Refer to «Camshaft Cover Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Align the primary timing marks (1) using the J 39946 .
4. Install the EN 46328 (1) on the left bank camshafts (2).
5. Create two reference marks (1) using a paint stick to identify the chain link adjacent to each actuator timing mark (2, 3).
6. Remove the 2 bolts attaching the left secondary camshaft drive chain tensioner to the engine block.
7. Remove the left secondary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
8. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Collapse the left secondary camshaft chain tensioner using the following procedure: Rotate the ratchet release lever (2) counterclockwise and hold. Collapse the tensioner shoe (1) and hold. Release the ratchet lever (2).
2. Slowly release the pressure on the shoe (1), until the ratchet lever (2) moves to the first detent and a "click" is heard and felt.
3. Collapse the tensioner shoe (1) and hold.
4. Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.
5. Install the left secondary camshaft drive chain tensioner and retaining bolts. Tighten: Tighten the secondary camshaft drive chain tensioner bolts to 25 N.m (18 lb ft).
6. Remove the pin holding the tensioner to tighten any slack in the timing chain.
7. Inspect the two paint marks created previously to ensure they remain aligned with the timing marks (1, 2) on the actuator.
8. Install the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
9. Remove the EN 46328 (1).
10. Install the camshaft cover. Refer to «Camshaft Cover Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Secondary Camshaft Drive Chain Tensioner Replacement - Right Side

Tools Required

1. EN 46328 Camshaft Holding Tool
2. J 39946 Crankshaft Socket - 4.0L and 4.6L

1. Remove the right camshaft cover. Refer to «Camshaft Cover Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Align the primary timing marks (1) using the J 39946 .
4. Install the EN 46328 (1) on the right bank camshafts (2).
5. Create two reference marks (1) using a paint stick to identify the chain link adjacent to each actuator timing mark (2, 3).
6. Install an engine front cover bolt (2) into the front of the engine.
7. Wrap mechanics wire (1) tightly around both the right secondary camshaft drive chain shoe (3) and the front cover bolt (2).
8. Remove the 2 bolts attaching the right secondary camshaft drive chain tensioner to the engine block.
9. Remove the right secondary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
10. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Collapse the right secondary camshaft chain tensioner using the following procedure: Rotate the ratchet release lever (2) counterclockwise and hold. Collapse the tensioner shoe (1) and hold. Release the ratchet lever (2).
2. Slowly release the pressure on the shoe (1), until the ratchet lever (2) moves to the first detent and a "click" is heard and felt.
3. Collapse the tensioner shoe (1) and hold.
4. Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.
5. Install the right secondary camshaft drive chain tensioner and retaining bolts. Tighten: Tighten the secondary camshaft drive chain tensioner bolts to 25 N.m (18 lb ft).
6. Remove the pin holding the tensioner to tighten any slack in the timing chain.
7. Inspect the two paint marks (1, 3) created previously to ensure they remain aligned with the timing marks (2, 4) on the actuator.
8. Remove the mechanics wire (1) supporting the right secondary camshaft drive chain shoe (3).
9. Remove the engine front cover bolt (2) from the front of the engine.
10. Install the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
11. Remove the EN 46328 (1).
12. Install the right camshaft cover. Refer to «Camshaft Cover Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Secondary Camshaft Drive Chain Shoe Replacement - Left Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the left secondary camshaft tensioner (2). Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
2. Remove the left camshaft position actuator housing. DO NOT remove the camshaft sensors from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Using the J 39946 (1), rotate the crankshaft until both camshaft position actuator timing marks are at the top of their rotation.
4. Install the EN 46328 (2).
5. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2).
6. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.
7. Use an open end wrench on the hex cast into the left exhaust camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the left exhaust oil control valve.
9. Slide the left intake camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.
10. Remove the left secondary camshaft drive timing chain shoe bolt.
11. Remove the left secondary camshaft drive timing shoe.
12. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Position the left secondary camshaft drive chain shoe in through the left front cylinder head as shown.
2. Install the left secondary camshaft drive chain shoe bolt. Tighten: Tighten the secondary camshaft drive chain shoe bolt to 25 N.m (18 lb ft).
3. Install the left secondary camshaft drive chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
4. Install the left exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5)
5. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).

Secondary Camshaft Drive Chain Shoe Replacement - Right Side

Tools Required

1. EN 46328 Camshaft Holding Tool
2. J 39946 Crankshaft Socket

1. Remove the right secondary camshaft tensioner (2). Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
2. Remove the right camshaft position actuator housing. DO NOT remove the camshaft sensors from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Using the J 39946 (1), rotate the crankshaft until both camshaft position actuator timing marks are near the top of their rotation.
4. Install the EN 46328 (2).
5. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2, 3).
6. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.
7. Use an open end wrench on the hex cast into the right exhaust camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the right exhaust oil control valve.
9. Slide the right exhaust camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.
10. Remove the right secondary camshaft drive timing chain shoe bolt.
11. Remove the right secondary camshaft drive timing shoe.
12. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Position the right secondary camshaft drive chain shoe in through the right front cylinder head as shown.
2. Install the right secondary camshaft drive chain shoe bolt. Tighten: Tighten the secondary camshaft drive chain shoe bolt to 25 N.m (18 lb ft).
3. Install the right secondary camshaft drive chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
4. Install the right exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).

Secondary Camshaft Drive Chain Guide Replacement - Left Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the left secondary camshaft tensioner (2). Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
2. Remove the left camshaft position actuator housing. DO NOT remove the camshaft sensors from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Using the J 39946 (1), rotate the crankshaft until both camshaft position actuator timing marks are at the top of their rotation.
4. Install the EN 46328 (2).
5. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (3).
6. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.
7. Use an open end wrench on the hex cast into the right intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the left exhaust oil control valve.
9. Slide the left exhaust camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.
10. Remove the upper left secondary camshaft drive chain guide bolt.
11. Remove the lower right secondary camshaft drive chain guide bolt.
12. Remove the left secondary camshaft drive chain guide.
13. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Position the left secondary camshaft drive chain guide in through the left front cylinder head as shown.
2. Install the left secondary camshaft drive chain guide bolts. Tighten: Tighten the secondary camshaft drive chain guide bolts to 25 N.m (18 lb ft).
3. Install the left secondary camshaft drive chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
4. Install the left exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).

Secondary Camshaft Drive Chain Guide Replacement - Right Side

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46328 Camshaft Holding Tool

1. Remove the right secondary camshaft tensioner (2). Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
2. Remove the right camshaft position actuator housing. DO NOT remove the camshaft sensors from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Using the J 39946 (1), rotate the crankshaft until both camshaft position actuator timing marks are at the top of their rotation.
4. Install the EN 46328 (2).
5. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (3).
6. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.
7. Use an open end wrench on the hex cast into the right intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the right intake oil control valve.
9. Slide the right intake camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.
10. Remove the upper right secondary camshaft drive chain guide bolt.
11. Remove the lower right secondary camshaft drive chain guide bolt.
12. Remove the right secondary camshaft drive chain guide.
13. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Position the right secondary camshaft drive chain guide in through the right front cylinder head as shown.
2. Install the right secondary camshaft drive chain guide bolts. Tighten: Tighten the secondary camshaft drive chain guide bolts to 25 N.m (18 lb ft).
3. Install the right secondary camshaft drive chain tensioner. Refer to «Secondary Camshaft Drive Chain Tensioner Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-tensioner-replacement) .
4. Install the right intake camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).

J 39946 Crankshaft Socket - 4.0L and 4.6L

1. Remove the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Align the primary timing marks (1) using the J 39946 .
3. Remove the 2 bolts attaching the primary camshaft drive chain tensioner to the engine block.
4. Remove the primary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
5. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Collapse the primary camshaft drive chain tensioner using the following procedure: Rotate the ratchet release lever (2) clockwise and hold. Collapse the tensioner shoe (1) and hold. Release the ratchet lever (2).
2. Slowly release the pressure on the shoe (1), until the ratchet lever (2) moves to the first detent and a click is heard and felt.
3. Collapse the tensioner shoe (1) and hold.
4. Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.
5. Install the primary camshaft drive chain tensioner and retaining bolts. Tighten: Tighten the primary camshaft drive chain tensioner bolts to 25 N.m (18 lb ft).
6. Remove the pin holding the tensioner to tighten any slack in the timing chain.
7. Ensure the primary timing marks (1) are aligned vertically.
8. Install the engine oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the oil outlet tube (2).
3. Remove the primary timing chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
4. Remove the two bolts attaching the primary camshaft drive chain guide (1) to the engine block.
5. Remove the primary camshaft drive chain guide (1).
6. Clean and inspect the camshaft timing drive components. Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Install the primary camshaft drive chain guide (1) and retaining bolts. Tighten: Tighten the primary camshaft drive chain guide bolts to 25 N.m (18 lb ft).
2. Install the primary timing chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Install the oil outlet tube (2). Tighten: Tighten the oil outlet tube bolts to 10 N.m (89 lb in).
4. Install the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

J 39946 Crankshaft Socket - 4.0L and 4.6L

1. Remove the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Align the primary timing marks (1) using the J 39946 .
3. Remove the secondary camshaft drive chains. Refer to «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) and «Secondary Camshaft Drive Chain Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
4. Remove the primary drive chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
5. Remove the oil outlet tube (2).
6. Remove the primary camshaft drive chain guide bolts and guide.
7. Remove the camshaft intermediate sprocket retaining bolt.
8. Remove the following as an assembly: The primary camshaft drive chain (3) The crankshaft sprocket The camshaft intermediate sprocket
9. Clean and inspect the camshaft timing drive components (1, 2, 3, 4). Refer to «Camshaft Timing Drive Components Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Align the timing marks (1) of the camshaft intermediate and crankshaft sprockets. The marks should be aligned vertically in the installed position.
2. Install the primary camshaft drive chain on the drive sprockets.
3. Use the J 39946 to rotate the crankshaft until the crankshaft keyway is approximately at the 1 o'clock position.
4. Install the following as an assembly: The primary camshaft drive chain (3) The crankshaft sprocket The camshaft intermediate sprocket
5. Install the camshaft intermediate sprocket retaining bolt. Tighten: Tighten the camshaft intermediate sprocket retaining bolt to 60 N.m (44 lb ft).
6. Install the primary drive chain guide (1).
7. Install the primary drive chain guide bolts. Tighten: Tighten the primary drive chain guide bolts to 25 N.m (18 lb ft).
8. Install the primary drive chain tensioner. Refer to «Primary Camshaft Drive Chain Tensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
9. Install the oil outlet tube (2) and bolts. Tighten: Tighten the oil outlet tube bolts to 10 N.m (89 lb in).
10. Install the secondary camshaft drive chains. Refer to «Secondary Camshaft Drive Chain Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) and «Secondary Camshaft Drive Chain Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__secondary-camshaft-drive-chain-replacement) .
11. Remove the pin from the primary timing chain tensioner release lever.
12. Ensure the primary timing marks (1) are aligned vertically.
13. Install the oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the camshaft intermediate drive shaft sprocket. Refer to «Primary Camshaft Drive Chain and Sprockets Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the camshaft intermediate drive shaft retaining bolts.
3. Remove the camshaft intermediate drive shaft from the engine.
4. Clean and inspect the camshaft intermediate driveshaft. Refer to «Camshaft Intermediate Drive Shaft Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-44l-3-of-5) .

1. Position the camshaft intermediate drive shaft to the engine, aligning the bolt holes.
2. Install the camshaft intermediate drive shaft retaining bolts. Tighten: Tighten the camshaft intermediate drive shaft retaining bolts to 10 N.m (89 lb in).
3. Install the camshaft intermediate drive shaft sprocket. Refer to «Primary Camshaft Drive Chain and Sprockets Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Intake

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46327 Timing Chain Retention Tool
3. EN 46328 Camshaft Holding Tool

1. Remove the right actuator housing. DO NOT remove the camshaft position (CMP) actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
3. Using the J 39946 , rotate the crankshaft until both Bank 1 (right) camshaft position (CMP) actuator timing marks perpendicular (90 degrees) to the cylinder head deck surface and near the top of their rotation.
4. Install the EN 46328 (2).
5. Install the EN 46327 (1, 2, 3, 4) using the procedure below
6. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2, 3).
7. Use an open end wrench on the hex cast into the right intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the right intake oil control valve.

Installation of the J 46327 Timing Chain Retention Tool - Right Bank

1. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
2. Position the bottom retention tool on the cylinder head with the V-notch of the block (1) adjacent to the right exhaust camshaft actuator timing sprocket and chain as shown.
3. Insert the hook end (1) into a secondary timing chain link as shown.
4. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
5. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
6. Position the top retention tool on the cylinder head with the V-notch of the block (1) adjacent to the right intake camshaft actuator timing sprocket and chain as shown.
7. Insert the hook end (2) into a secondary timing chain link as shown.
8. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
9. Tighten the EN 46327 wing nut against the retention tool block (1).
10. Tighten the EN 46327 wing nut to provide slack in the secondary timing chain between the two camshaft actuators (1, 4) as shown.

1. Install the oil control valve through the opening in the right intake camshaft position actuator and thread it into the right intake camshaft.
2. Ensure both camshaft actuator timing marks (2, 4) are aligned with the paint marks (1, 3) on the secondary timing chain previously created.
3. Use an open end wrench on the hex cast into the right intake camshaft to prevent the camshaft from rotating when tightening the camshaft oil control valve. Tighten: Tighten the camshaft oil control valve to 120 N.m (89 lb ft).
4. Remove the EN 46327 (1, 2, 3, 4).
5. Remove the EN 46328 (2).
6. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
7. Install the right camshaft actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Exhaust

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46327 Timing Chain Retention Tool
3. EN 46328 Camshaft Holding Tool

1. Remove the right actuator housing. DO NOT remove the camshaft position (CMP) actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
3. Using the J 39946 , rotate the crankshaft until both Bank 1 (right) camshaft (CMP) actuator timing marks are perpendicular (90 degrees) to the cylinder head deck surface and near the top of their rotation.
4. Install the EN 46328 (2).
5. Install the EN 46327 (1, 2, 3, 4) using the procedure below
6. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2, 3).
7. Use an open end wrench on the hex cast into the right exhaust camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the right exhaust oil control valve.

1. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
2. Position the bottom retention tool on the cylinder head with the V-notch of the block (1) adjacent to the right exhaust camshaft actuator timing sprocket and chain as shown.
3. Insert the hook end (1) into a secondary timing chain link as shown.
4. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
5. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
6. Position the right top retention tool on the cylinder head with the V-notch of the block (1) adjacent to the right intake camshaft actuator timing sprocket and chain as shown.
7. Insert the hook end (2) into a secondary timing chain link as shown.
8. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
9. Tighten the EN 46327 wing nut against the retention tool block (1).
10. Tighten the EN 46327 wing nut to provide slack in the secondary timing chain between the two camshaft actuators (1, 4) as shown.

1. Install the oil control valve through the opening in the right exhaust camshaft position actuator and thread it into the right exhaust camshaft.
2. Ensure both camshaft actuator timing marks (2, 4) are aligned with the paint marks (1, 3) on the secondary timing chain previously created.
3. Use an open end wrench on the hex cast into the right exhaust camshaft to prevent the camshaft from rotating when tightening the camshaft oil control valve. Tighten: Tighten the camshaft oil control valve to 120 N.m (89 lb ft).
4. Remove the EN 46327 (1, 2, 3, 4).
5. Remove the EN 46328 (2).
6. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
7. Install the left camshaft actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Intake

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46327 Timing Chain Retention Tool
3. EN 46328 Camshaft Holding Tool

1. Remove the left actuator housing. DO NOT remove the camshaft position (CMP) actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
3. Using the J 39946 , rotate the crankshaft until both Bank 2 (left) camshaft (CMP) actuator timing marks are perpendicular (90 degrees) to the cylinder head deck surface and near the top of their rotation.
4. Install the EN 46328 (2).
5. Install the EN 46327 (1, 2, 3, 4) using the procedure below
6. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2, 3).
7. Use an open end wrench on the hex cast into the left intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the left intake oil control valve.

Installation of the J 46327 Timing Chain Retention Tool - Left Bank

1. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
2. Position the bottom retention tool on the cylinder head with the V-notch of the block (1) adjacent to the left exhaust camshaft actuator timing sprocket and chain as shown.
3. Insert the hook end (1) into a secondary timing chain link as shown.
4. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
5. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
6. Position the top left retention tool on the cylinder head with the V-notch of the block (1) adjacent to the left intake camshaft actuator timing sprocket and chain as shown.
7. Insert the hook end (2) into a secondary timing chain link as shown.
8. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
9. Tighten the EN 46327 wing nut against the retention tool block (1).
10. Tighten the EN 46327 wing nut to provide slack in the secondary timing chain (2, 3) between the two camshaft actuators as shown.

1. Install the oil control valve through the opening in the left intake camshaft position actuator and thread it into the left intake camshaft.
2. Ensure both camshaft actuator timing marks (2, 4) are aligned with the paint marks (1, 3) on the secondary timing chain previously created.
3. Use an open end wrench on the hex cast into the left intake camshaft to prevent the camshaft from rotating when tightening the camshaft oil control valve. Tighten: Tighten the camshaft oil control valve to 120 N.m (89 lb ft).
4. Remove the EN 46327 (1, 2, 3, 4).
5. Remove the EN 46328 (2).
6. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
7. Install the left camshaft actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Exhaust

Tools Required

1. J 39946 Crankshaft Socket
2. EN 46327 Timing Chain Retention Tool
3. EN 46328 Camshaft Holding Tool

1. Remove the left actuator housing. DO NOT remove the camshaft position (CMP) actuator solenoids from the housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
3. Using the J 39946 , rotate the crankshaft until both Bank 2 (left) camshaft (CMP) actuator timing marks are perpendicular (90 degrees) to the cylinder head dock surface and near the top of their rotation.
4. Install the EN 46328 (1).
5. Install the EN 46327 (1, 2, 3, 4) using the procedure below
6. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (2, 3).
7. Use an open end wrench on the hex cast into the left exhaust camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.
8. Loosen and remove the left exhaust oil control valve.

1. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
2. Position the bottom retention tool on the cylinder head with the V-notch of the block (1) adjacent to the left exhaust camshaft actuator timing sprocket and chain as shown.
3. Insert the hook end (1) into a secondary timing chain link as shown.
4. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
5. Rotate the wing nut (3) of the EN 46327 to the top of its travel.
6. Position the top retention tool on the cylinder head with the V-notch of the block (1) adjacent to the left intake camshaft actuator timing sprocket and chain as shown.
7. Insert the hook end (2) into a secondary timing chain link as shown.
8. Rotate the wing nut until it contacts the retention tool block (1). DO NOT tighten the wing nut at this time.
9. Tighten the EN 46327 wing nut against the retention tool block (1).
10. Tighten the EN 46327 wing nut to provide slack in the secondary timing chain (2, 3) between the two camshaft actuators as shown.

1. Install the oil control valve through the opening in the left exhaust camshaft position actuator and thread it into the left exhaust camshaft.
2. Ensure both camshaft actuator timing marks (2, 4) are aligned with the paint marks (1, 3) on the secondary timing chain previously created.
3. Use an open end wrench on the hex cast into the left exhaust camshaft to prevent the camshaft from rotating when tightening the camshaft oil control valve. Tighten: Tighten the camshaft oil control valve to 120 N.m (89 lb ft).
4. Remove the EN 46327 (1, 2, 3, 4).
5. Remove the EN 46328 (2).
6. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__crankshaft-balancer-replacement) .
7. Install the left camshaft actuator housing. Refer to «Camshaft Position Actuator Housing Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

1. Remove the right intake camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .
2. Pull the actuator forward to disengage the camshaft alignment pin from the actuator.
3. Disengage the secondary timing chain from the actuator and remove the actuator.

1. Locate the camshaft alignment pin hole (1) on the back of the actuator.
2. This hole will mate with the camshaft alignment pin (1).
3. Locate the timing alignment mark (1) on the front of the actuator.
4. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (2, 4) corresponds with the paint mark created on the chain link (1, 3).
5. Slide the actuator over the camshaft alignment pin and install the actuator onto the camshaft.
6. Install the right intake camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .

1. Remove the right exhaust camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .
2. Pull the actuator forward to disengage the camshaft alignment pin from the actuator.
3. Disengage the secondary timing chain from the actuator and remove the actuator.

1. Locate the camshaft alignment pin hole (1) on the back of the actuator.
2. This hole will mate with the camshaft alignment pin (1).
3. Locate the timing alignment mark (1) on the front of the actuator.
4. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (2, 4) corresponds with the paint mark created on the chain link (1, 3).
5. Slide the actuator over the camshaft alignment pin and install the actuator onto the camshaft.
6. Install the right exhaust camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .

1. Remove the left intake camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .
2. Pull the actuator forward to disengage the camshaft alignment pin from the actuator.
3. Disengage the secondary timing chain from the actuator and remove the actuator.

1. Locate the camshaft alignment pin hole (1) on the back of the actuator.
2. This hole will mate with the camshaft alignment pin (1).
3. Locate the timing alignment mark (1) on the front of the actuator.
4. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (2, 4) corresponds with the paint mark created on the chain link (1, 3).
5. Slide the actuator over the camshaft alignment pin and install the actuator onto the camshaft.
6. Install the left intake camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .

1. Remove the left exhaust camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .
2. Pull the actuator forward to disengage the camshaft alignment pin from the actuator.
3. Disengage the secondary timing chain from the actuator and remove the actuator.

1. Locate the camshaft alignment pin hole (1) on the back of the actuator.
2. This hole will mate with the camshaft alignment pin (1).
3. Locate the timing alignment mark (1) on the front of the actuator.
4. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (2, 4) corresponds with the paint mark created on the chain link (1, 3).
5. Slide the actuator over the camshaft alignment pin and install the actuator onto the camshaft.
6. Install the left exhaust camshaft position actuator oil control valve. Refer to «Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__camshaft-position-actuator-oil-control-valve) .

Setting Camshaft Timing

Tools Required

1. EN 46328 Camshaft Holding Tool
2. J 39946 Crankshaft Socket

Setting the camshaft timing is necessary whenever the camshaft drive system has been disturbed such that the alignment relationship between any chain and sprocket has been lost.

The crankshaft and camshafts are correctly timed when the crank sprocket and the intermediate shaft sprocket have their timing marks aligned and all four camshaft position actuator timing marks are perpendicular (90 degrees) to the cylinder head deck surface and are near the top of their rotation.

1. Remove the following components for access: The left camshaft cover. Refer to «Camshaft Cover Replacement - Left Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) . The right camshaft cover. Refer to «Camshaft Cover Replacement - Right Side»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) . The engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) . The oil pump. Refer to «Oil Pump Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Using the J 39946 (1), rotate the crankshaft until: The primary timing gear alignment mark is at the top of its position, The crankshaft keyway is approximately at the 1 o'clock position, The intermediate sprocket timing mark is at the bottom of its rotation (adjacent to the crank gear timing mark) as shown. Timing the primary timing gears ensures that the #1 cylinder piston (Bank 1 right front cylinder) is at TDC beginning its power stroke event. If this condition can not be accomplished while rotating the crankshaft, remove the primary gears and chain and realign the primary timing marks. Refer to «Primary Camshaft Drive Chain and Sprockets Replacement»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. The rear of each camshaft has a flat-machined surface which mates with special camshaft holding tool EN 46328 (1) to prevent valve spring tension from rotating the camshafts unexpectedly. When each bank of camshafts is properly positioned for secondary timing alignment the intake and exhaust camshafts flat spots will be parallel to each other.
4. This permits the J 39946 to be installed (2), and prevents the camshafts from being rotated by valve spring tension.
5. Position both Bank 2 (left) camshafts with the position actuator timing marks (1) near the top of its rotation perpendicular (90 degrees) to the cylinder head deck surface as shown.
6. Each secondary timing chain has three black links (1, 2, 3) that aid in timing the secondary camshaft position actuators to the intermediate sprockets. These black links DO NOT need to be used when servicing only one of the secondary timing chain or actuator assemblies. A time saving alternative is to match mark each chain link adjacent to the camshaft actuator timing marks and an intermediate sprocket tooth with a paint stick prior to disassembly.
7. The intermediate sprocket has a timing mark identified by the letters left bank (LB) and a triangle. The triangle point aligns with a black link on the secondary timing chain.
8. Assemble the left secondary timing chain to the left intake camshaft position actuator, and the left intermediate timing sprocket, with the alignment marks adjacent to the black chain links (1, 3) as indicated above.
9. Assemble the left exhaust camshaft position actuator with its timing mark aligned with the black link (2) in the secondary timing chain as shown. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
10. The 2 flat-machined surfaces at the rear of each camshaft will be facing downward and parallel to each other. Install the J 39946 over the ends of the camshafts as shown, and rotate both thumbscrews down until they contact the camshafts.
11. With the Bank 1 (right) intake camshaft position actuator assembled to the camshaft, rotate the actuator so that its timing mark is perpendicular (90 degrees) to the cylinder head deck surface and is near the top of its rotation.
12. The intermediate timing gear outer most sprocket timing mark is labeled with the letters right bank (RB). The triangle point is timed to a black link on the right secondary timing chain.
13. Align the intermediate right bank sprocket timing mark with the black link on the secondary chain.
14. Align the black link (2) of the secondary timing chain to the timing mark on the right intake camshaft position actuator.
15. Align the timing mark of the Bank 1 (right) exhaust camshaft position actuator to the black link (1) on the secondary timing chain and assemble the actuator on the exhaust camshaft as shown. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
16. Proper alignment is achieved by marking a chain link and sprocket gear tooth with a paint stick prior to disassembling the components.

Camshaft Replacement - Left Side

Tools Required

1. J 45059 Angle Meter
2. J 39946 Crankshaft Socket - 4.0L and 4.6L
3. EN 46328 Camshaft Holding Tool

1. Remove the left intake camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the left exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Alternately loosen the camshaft bearing cap bolts a few turns at a time until all valve spring pressure has been released.
4. Remove the camshaft bearing caps.
5. Remove the camshafts.
6. Remove the camshaft followers.
7. Clean and inspect the camshafts. Refer to «Camshaft Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-4-of-5) .

1. Apply a liberal amount of lubricant to the roller pivot pocket (2) and valve slot areas (1) of the camshaft followers. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
2. Place the camshaft followers in position on the valve tip and the stationary hydraulic lash adjusters (SHLA) (1). The rounded head of the follower goes on the SHLA, while the flat end goes on the valve tip.
3. Clean the camshaft carriers with a clean, lint-free cloth.
4. Apply a liberal amount of lubricant to the camshaft carriers, camshaft lobes (1) and the camshaft journals (2). Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
5. Place the camshaft in the camshaft carriers with the camshaft sprocket drive pins near the top of their rotation and the camshaft lobes in a neutral position. The camshafts can be identified by a stamping near the rear journal. For example, L-EXH is defined as left bank exhaust.
6. Observe the markings on the camshaft bearing caps. Each camshaft bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow should point to the front of the engine. The number indicates the position from the front of the engine. The "E" indicates the exhaust camshaft. The "I" indicates the Intake camshaft.
7. Apply a liberal amount of lubricant to the camshaft bearing caps. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
8. Install the camshaft bearing caps according to the identification marks.
9. Install the camshaft bearing cap bolts in sequence. Tighten: Alternately hand tighten the camshaft bearing cap bolts a few turns at a time until all caps are fully seated. Tighten the camshaft bearing cap bolts to 5 N.m (44 lb in). Tighten the camshaft bearing cap bolts an additional 30 degrees using the J 45059 .
10. Align the camshafts.
11. Install the EN 46328 over the camshafts.
12. Install the left exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
13. Install the left intake camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 2 (Left Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

Camshaft Replacement - Right Side

Tools Required

1. J 45059 Angle Meter
2. J 39946 Crankshaft Socket - 4.0L and 4.6L
3. EN 46328 Camshaft Holding Tool

1. Remove the right intake camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
2. Remove the right exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
3. Alternately loosen the camshaft bearing cap bolts a few turns at a time until all valve spring pressure has been released.
4. Remove the camshaft bearing caps.
5. Remove the camshafts.
6. Remove the camshaft followers.
7. Clean and inspect the camshafts. Refer to «Camshaft Cleaning and Inspection»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-4-of-5) .

1. Apply a liberal amount of lubricant to the roller pivot pocket (2) and valve slot areas (1) of the camshaft followers. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
2. Place the camshaft followers in position on the valve tip and the stationary hydraulic lash adjusters (SHLA) (1). The rounded head of the follower goes on the SHLA, while the flat end goes on the valve tip.
3. Clean the camshaft carriers with a clean, lint-free cloth.
4. Apply a liberal amount of lubricant to the camshaft carriers, camshaft lobes (1) and the camshaft journals (2). Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
5. Place the camshaft in the camshaft carriers with the camshaft sprocket drive pins near the top of their rotation and the camshaft lobes in a neutral position. The camshafts can be identified by a stamping near the rear journal. For example, R-EXH is defined as right bank exhaust.
6. Observe the markings on the camshaft bearing caps. Each camshaft bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow should point to the front of the engine. The number indicates the position from the front of the engine. The "E" indicates the exhaust camshaft. The "I" indicates the Intake camshaft.
7. Apply a liberal amount of lubricant to the camshaft bearing caps. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-introduction__sealers-adhesives-and-lubricants) for the correct part number.
8. Install the camshaft bearing caps according to the identification marks.
9. Install the camshaft bearing cap bolts in sequence. Tighten: Alternately hand tighten the camshaft bearing cap bolts a few turns at a time until all caps are fully seated. Tighten the camshaft bearing cap bolts to 5 N.m (44 lb in). Tighten the camshaft bearing cap bolts an additional 30 degrees using the J 45059 .
10. Align the camshafts.
11. Install the EN 46328 over the camshafts.
12. Install the right exhaust camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .
13. Install the right intake camshaft actuator. Refer to «Camshaft Position Actuator Replacement - Bank 1 (Right Side) Intake»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5) .

See also:
• Lifting and Jacking the Vehicle
• Remote Power Steering Fluid Reservoir Replacement
• Fastener Notice
• Battery Negative Cable Disconnection and Connection
• Special Tools
• Hood Replacement
• Front Suspension Crossmember Replacement
• Engine Mount Replacement - Left Side
• Fuel Injection Fuel Rail Assembly Replacement
• Intake Manifold Cleaning and Inspection
• Radiator Surge Tank Replacement
• Component Fastener Tightening Notice
• Cooling System Draining and Filling (Static Fill)
• Cooling System Draining and Filling (GE 47716)
• Sealers, Adhesives, and Lubricants
• Oil Pump Cleaning and Inspection
• Engine Oil and Oil Filter Replacement
• Oil Pan Replacement
• Camshaft Cover Cleaning and Inspection
• Camshaft Holding Tool Caution
• Drive Belt Replacement
• Crankshaft Balancer Replacement
• Secondary Camshaft Drive Chain Replacement - Right Side
• Secondary Camshaft Drive Chain Guide Replacement - Left Side
• Secondary Camshaft Drive Chain Tensioner Replacement - Left Side
• Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Intake