REMOVAL AND INSTALLATION
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292517) article.
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Remove the RH catalytic converter. For additional information, refer to «EXHAUST SYSTEM»(ref-292525) article.
- Remove the block heater cover.
- Disconnect the block heater electrical connector.
- Remove the block heater. To install, tighten to 40 N.m (30 lb-ft).
- To install, reverse the removal procedure.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Remove the air cleaner assembly and outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(ref-292569) article.
- Remove the 2 bolts and position aside the thermostat housing cover. To install, tighten to 10 N.m (89 lb-in).
- Remove the O-ring seal and thermostat. Clean and inspect the O-ring seal. Install a new seal if necessary.
- To install, reverse the removal procedure.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Remove the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(ref-292569) article.
- Disconnect the 5 coolant hoses from the thermostat housing and position them aside.
- Remove the 3 thermostat housing bolts. To install, tighten to 10 N.m (89 lb-in).
- Separate the thermostat housing from the coolant tube and remove the thermostat housing. Remove and discard the O-ring seals.
- To install, reverse the removal procedure. Lubricate the new O-ring seals with clean engine coolant.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
REMOVAL
| CAUTION | During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure. |
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292517) article.
- Drain the cooling system.
- Remove the engine front cover. For additional information, refer to «ENGINE - 3.5L»(ref-292564) article.
- Remove and discard the engine oil filter.
- Rotate the crankshaft clockwise and align the timing marks on the variable camshaft timing (VCT) assemblies as shown in illustration.
- Install the special tool onto the flats of the LH camshafts.
- Install the special tool onto the flats of the RH camshafts.
- Remove the 3 bolts and the RH VCT housing.
- Remove the 3 bolts and the LH VCT housing.
- Remove and discard the VCT housing seals.
- Remove the 2 bolts and the primary timing chain tensioner.
- Remove the primary timing chain tensioner arm.
- Remove the 2 bolts and the lower LH primary timing chain guide.
- Remove the primary timing chain.
- Remove the 2 bolts and the upper LH primary timing chain guide.
- Remove the RH primary timing chain guide lower bolt.
- Loosen the RH primary timing chain guide upper bolt. Rotate the guide and tighten the bolt.
- Place clean lint-free shop towels in the oil pan opening to prevent coolant from entering the oil pan during coolant pump removal.
- Remove the 8 bolts and the coolant pump.
INSTALLATION
- Install the coolant pump and the 8 bolts. Tighten in the sequence shown in illustration to 10 N.m (89 lb-in).
- Remove all of the shop towels from the oil pan opening.
- Remove the oil pan drain plug and allow any accumulated coolant to drain. Remove any residual coolant from the front of the engine and the oil pan using regulated compressed air and clean lint-free shop towels. Install the oil pan drain plug and tighten to 27 N.m (20 lb-ft).
- Loosen the RH primary timing chain guide upper bolt. Position the RH primary timing chain guide and install the lower bolt. Tighten the 2 bolts to 10 N.m (89 lb-in).
- Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.
- Install the upper LH primary timing chain guide and the 2 bolts. Tighten to 10 N.m (89 lb-in).
- Install the lower LH primary timing chain guide and the 2 bolts. Tighten to 10 N.m (89 lb-in).
- Install the primary timing chain tensioner arm.
- Reset the primary timing chain tensioner. Rotate the lever counterclockwise. Using a soft-jawed vise, compress the plunger. Align the hole in the lever with the hole in the tensioner housing. Install a suitable lock pin.
- Install the primary tensioner and the 2 bolts. Tighten to 10 N.m (89 lb-in). Remove the lock pin.
- As a post check, verify correct alignment of all timing marks.
- Install new VCT housing seals.
- Install the LH VCT housing and the 3 bolts. Tighten in the sequence shown in illustration to 10 N.m (89 lb-in).
- Install the RH VCT housing and the 3 bolts. Tighten in the sequence shown in illustration to 10 N.m (89 lb-in).
- Install a new engine oil filter. Tighten to 5 N.m (44 lb-in) and then rotate an additional 180 degrees.
- Install the engine front cover. For additional information, refer to «ENGINE - 3.5L»(ref-292564) article.
- Fill and bleed the cooling system.
Scheme 5
| Item | Part Number | Description |
|---|---|---|
| 1 | 13A506 | Wiring harness retainer |
| 2 | 8B274 | Upper radiator hose |
| 3 | 14A464 | Cooling fan motor and shroud electrical connector |
| 4 | W503924 | Cooling fan motor and shroud bolt (2 required) |
| 5 | 8C607 | Cooling fan motor and shroud |
| 6 | W503924 | Oil cooler bracket bolt (if equipped) |
| 7 | Oil cooler bracket (if equipped) |
- Remove the air cleaner assembly. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(ref-292569) article.
- If equipped, detach the 2 block heater wiring clips from the radiator support.
- Detach the wiring harness retainers and position the harness aside.
- Position aside the upper radiator hose from the cooling fan motor and shroud.
- Disconnect the cooling fan motor and shroud electrical connector.
- If equipped, remove the bolt and position aside the oil cooler bracket. To install, tighten to 6 N.m (53 lb-in).
- Remove the 2 bolts and the cooling fan motor and shroud. To install, tighten to 6 N.m (53 lb-in).
- To install, reverse the removal procedure.
Scheme 6
| Item | Part Number | Description |
|---|---|---|
| 1 | 8B274 | Upper radiator hose |
| 2 | 8C633 | Lower degas bottle hose |
| 3 | 8B273 | Lower radiator hose |
| 4 | 8A194 | Upper radiator support bracket (2 required) |
Scheme 7
| Item | Part Number | Description |
|---|---|---|
| 5 | A/C condenser bolt (2 required) | |
| 6 | 19710 | A/C condenser |
| 7 | 8005 | Radiator |
| 8 | 19D738 | Pin-type retainer (2 required) |
| 9 | W707400 | Compressor-to-condenser discharge line bracket bolt |
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
- Remove the cooling fan motor and shroud. For additional information, refer to «COOLING FAN MOTOR AND SHROUD»(ref-292560-S01887243132008080400000) .
- Remove the front bumper cover. For additional information, refer to «BUMPERS»(ref-292550) article.
- Disconnect the upper radiator hose and lower degas bottle hose from the radiator.
- Disconnect the lower radiator hose from the radiator.
- Remove the compressor-to-condenser discharge line bracket bolt. To install, tighten to 7 N.m (62 lb-in).
- Lift and remove the tabs from the radiator support and position the radiator towards the engine.
- Detach the 2 pin-type retainers from the radiator.
- Remove the 2 A/C condenser bolts from the radiator and separate the condenser from the radiator. To install, tighten to 10 N.m (89 lb-in).
- Remove the radiator.
- To install, reverse the removal procedure.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) .
Scheme 8
| Item | Part Number | Description |
|---|---|---|
| 1 | 8W005 | Upper degas bottle hose |
| 2 | 8C633 | Lower degas bottle hose |
| 3 | N807658 | Degas bottle-to-fender bolt (2 required) |
| 4 | N807658 | Degas bottle-to-washer bottle screw |
| 5 | 8A080 | Degas bottle |
| 6 | 8100 | Pressure relief cap |
- Release the pressure in the cooling system by slowly turning the pressure relief cap one half turn counterclockwise. When the pressure is released, remove the pressure relief cap.
- Using hose clamp pliers, clamp the lower degas bottle hose.
- Using a suitable suction device, siphon the coolant from the degas bottle.
- Disconnect the upper degas bottle hose and position it aside.
- Disconnect the lower degas bottle hose and position it aside.
- Remove the degas bottle-to-washer bottle screw.
- Remove the 2 bolts and the degas bottle. To install, tighten to 9 N.m (80 lb-in).
- To install, reverse the removal procedure.
- Fill the degas bottle. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-292560-S20224315752008080400000) for the recommended coolant mixture and fill level.