Automatic Transmission - 5l40-e/5l50-e - Introduction (2 of 2) Cadillac XLR I

Transmission Fluid Temperature Sensor Specifications

Transmission Fluid Temperature Sensor Specifications

Fastener Tightening Specifications (Unit Repair)

Fastener Tightening Specifications

Fastener Tightening Specifications (On Vehicle)

Fastener Tightening Specifications (On Vehicle)

Fluid Capacity Specifications

Fluid Capacity Specifications (5L40-E)

Transmission General Specifications

Transmission General Specifications

Range Reference

Range Reference

Shift Solenoid Valve State and Gear Ratio

Shift Solenoid Valve State and Gear Ratio

Shift Speed

Shift Speed

Transmission Internal Mode Switch Logic

Transmission Internal Mode Switch Logic

Line Pressure

Line Pressure

Component Resistance

Component Resistance

Automatic Transmission Schematic Icons

Automatic Transmission Schematic Icons Icon Icon Definition NOTE: The OBD II symbol is used on the circuit diagrams in order to alert the technician that the circuit is essential for proper OBD II emission control circuit operation. Any circuit which fails and causes the malfunction indicator lamp (MIL) to turn ON, or causes emissions-related component damage, is identified as an OBD II circuit. IMPORTANT: Twisted-pair wires provide an effective "shield" that helps protect sensitive electronic components from electrical interference. If the wires were covered with shielding, install new shielding. In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown : The wires must be twisted a minimum of 9 turns per 31 cm (12 in) as measured anywhere along the length of the wires The outside diameter of the twisted wires must not exceed 6.0 mm

Scheme 1

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Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

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Scheme 15

Scheme 16

Scheme 17

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Scheme 26

Engine Side to Transmission Side

Automatic Transmission Inline 20-Way Connector End

Scheme 27

Automatic Transmission Inline 20-Way Connector End View

Engine Side to Transmission Side

Scheme 28

Automatic Transmission Internal Connector End Views

1-2 Shift Solenoid (SS) Valve, Wiring Harness Side

2-3 Shift Solenoid (SS) Valve, Wiring Harness Side

Automatic Transmission Internal Connector End Views

2-3 Shift Solenoid (SS) Valve, Wiring Harness Side

4-5 Shift Solenoid (SS) Valve, Wiring Harness Side

Automatic Transmission Internal Connector End Views

4-5 Shift Solenoid (SS) Valve, Wiring Harness Side

Scheme 29

Automatic Transmission Internal Connector End Views

Input Speed Sensor, Wiring Harness Side

Output Speed Sensor, Wiring Harness Side

Automatic Transmission Internal Connector End Views

Output Speed Sensor, Wiring Harness Side

Pressure Control (PC) Solenoid Valve, Wiring Harness Side

Automatic Transmission Internal Connector End Views

Pressure Control (PC) Solenoid Valve, Wiring Harness Side

Scheme 30

Automatic Transmission Internal Connector End Views

Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve, Wiring Harness Side

Scheme 31

Automatic Transmission Internal Connector End Views

Transmission Manual Shift Shaft Switch Assembly, Wiring Harness Side

Scheme 32

Automatic Transmission Related Connector End Views

Automatic Transmission Shift Lever

Scheme 33

Automatic Transmission Related Connector End Views

Transmission Control Module (TCM), Engine Side

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

Removal Procedure

1. Remove the cover (3) from knob (1) and allow the cover to slide down the transmission control (2).
2. Loosen T15 TORX® head fastener.
3. Remove knob from the floor shift control.

Installation Procedure

1. Install the knob onto the shift floor shift control.
2. Tighten the T15 TORX® head fastener securing the knob to the control lever. Tighten: Tighten the shift control knob screw to 5 N.m (4 lb ft).
3. Slide the cover (3) up and attach to the shift control knob (1).

1. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the intermediate exhaust pipe. Refer to «Intermediate Pipe Replacement»(/cadillac/xlr/i-2003-2009/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
3. Remove the driveline tunnel closeout panel. Refer to «Driveline Tunnel Closeout Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
4. Disconnect the shift control cable from the floor shift control ball stud 3.
5. Lower the vehicle.
6. Remove the shift control trim plate. Refer to «Console Trim Plate Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
7. Remove the center console assembly. Refer to «Console Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
8. Remove the electrical connector from the shift control assembly.
9. Disconnect the wiring harness connector 1 from the shift lock control pigtail connector 2.
10. Remove the nuts 3 securing the shift control assembly 1 to the tunnel reinforcement.
11. Remove the shift control assembly from the tunnel reinforcement.

1. Install the shift control assembly to the tunnel reinforcement.
2. Install the nuts securing the shift control assembly to the tunnel reinforcement. Tighten: Tighten the nuts to 12 N.m (106 lb in).
3. Connect the wiring harness connector to the shift lock control pigtail connector.
4. Install the electrical connector (1) to the shift control assembly.
5. Install the center console assembly. Refer to «Console Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console
6. Install the shift control trim plate. Refer to «Console Trim Plate Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console.
7. Place the shifter in the NEUTRAL position.
8. 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) in General Information.
9. Connect the shift lock control cable 3. Refer to «Automatic Transmission Control Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
10. Install the driveline tunnel closeout panel. Refer to «Driveline Tunnel Closeout Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
11. Install the intermediate exhaust pipe. Refer to «Intermediate Pipe Replacement»(/cadillac/xlr/i-2003-2009/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
12. With the shifter and the transmission in the NEUTRAL position, adjust the shifter cable. Refer to «Shift Control Linkage Adjustment»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
13. Lower the vehicle.

Adjustment Procedure

1. Place the transmission shift control lever 2 into the NEUTRAL position.
2. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
3. Slide the shift cable secondary lock 1 forward.
4. With a small flat-blade screwdriver, reposition the shift cable primary lock 1 outward to UNLOCK the cable rod from the cable adjuster body.
5. Ensure that the transmission range select lever and shifter are each in the NEUTRAL position.
6. Press in on the cable primary lock 1 until seated.
7. Slide the secondary lock 1 rearward.
8. Lower the vehicle.
9. Place the transmission shifter control lever 2 into the PARK position. Ensure that the vehicle is prevented from rolling when the shifter selector lever is in the PARK position.
10. Make sure that the starter motor will not operate when the shifter selector lever is placed in the reverse or drive position.

1. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the intermediate pipe assembly. Refer to «Intermediate Pipe Replacement»(/cadillac/xlr/i-2003-2009/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
3. Remove the driveline closeout panel. Refer to «Driveline Tunnel Closeout Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) In Propeller Shaft.
4. Disconnect the shift control cable from the floor shift ball stud 3..
5. Remove the retainer clip 1 securing the forward portion of the cable housing to the tunnel bracket 3.
6. Remove the retaining clip 1 securing the rear portion of the cable housing 2 to the transmission bracket 3
7. Remove the cable 2 assembly from the transmission bracket 3.
8. Disconnect the shift control 1 from the transmission shift lever ball stud 2.
9. Remove the shift control cable from the vehicle.

1. Guide the shift cable assembly into the body tunnel.
2. Position the foam spacer 2 above the fuel feed lines. DO NOT allow the foam spacer to come in contact with the fuel lines.
3. Place the cable assembly 5 into the funnel bracket 1 located behind the floor shift control.
4. Install the retainer 4 into the cable assembly.
5. Secure the cable assembly to the ball stud 3 on the floor shift control.
6. Place the rear portion of the cable assembly 2 through the transmission bracket 3.
7. Secure the cable assembly to the transmission bracket with the retainer 1.
8. Secure the cable assembly 1 to the ball stud on the transmission shift lever 2.
9. With the shiftier and transmission in the NEUTRAL position, adjust the shift control cable. Refer to «Shift Control Linkage Adjustment»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .

1. Twist the upper switch (1) counterclockwise and remove the switch.
2. Disconnect the upper switch electrical connector.

1. Connect the upper switch (1) electrical connector.
2. Install the upper switch (1) into the upper retainer.
3. Twist the switch clockwise until fully seated. IMPORTANT: The release switch assembly and the stoplamp switch assembly cannot be adjusted until after the brake booster pushrod is assembled to brake pedal assembly. Incorrect adjustment may cause the cruise control system to not work properly.

Automatic Transmission Fluid and Filter Replacement

Tools Required

1. J 6125-1B Slide Hammer Adapter. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .
2. J 23129 Universal Seal Remover. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .
3. J 36850 Transjel Lubricant

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. Place a suitable drain pan under the transmission fluid drain plug.
3. Remove and discard the transmission fluid drain plug.
4. Allow the transmission fluid to drain.
5. Inspect the transmission fluid for discoloration and contamination while draining.
6. After the transmission fluid has finished draining, Install a NEW transmission fluid drain plug. Tighten: Tighten the fluid drain plug to 20 N.m (15 lb ft).
7. Remove the fluid pan bolts (3).
8. Lightly tap the fluid pan (2) with a rubber mallet if necessary in order to loosen.
9. Remove the fluid pan (2) and the gasket (4).
10. Clean and inspect the following for damage or wear. Magnet (1) Pan (2) Bolts (3) Gasket (4)
11. Remove the fluid filter (2). Use a long screwdriver in order to pry the fluid filter neck out of the seals.
12. Remove the 2 fluid filter seals (1) using J 23129 and J 6125-1B . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .

1. Install 2 NEW fluid filter seals (1), onto the transmission fluid filter neck. Coat the new seals with a small amount of J 36850 or petroleum jelly before installation.
2. Install the transmission fluid filter (2) into the case.
3. Install the fluid pan (2) and the gasket (4) at the same time.
4. Install the fluid pan bolts (3). Tighten: Tighten the bolts to 11 N.m (97 lb in).
5. Fill the transmission to the proper level. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .
6. Lower the vehicle.
7. Inspect the oil pan gasket for leaks.

1. Install the J 41623-B onto the transmission oil cooler (TOC) pipe.
2. Slide the J 41623-B toward the TOC pipe fitting.
3. Connect the J 41623-B onto the TOC pipe fitting.
4. Rotate the J 41623-B until the retainer clip (1) rises above the fitting retainer seat.
5. Pull back on the TOC pipe to disengage the pipe from the TOC pipe fitting.
6. Remove the J 41623-B from the TOC pipe.

1. Install the TOC pipe into the TOC pipe fitting. A distinct snap should be heard or felt when assembling the TOC pipe to the fitting.
2. To ensure the cooler line is properly installed, give the cooler pipe a gentle pull.

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) in General Information.
2. Position a drain pan under the vehicle.
3. Disengage the plastic cap from the TOC fitting. Pull the plastic cap back along the pipe.
4. Disconnect the TOC line from the TOC fitting. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
5. Remove the TOC fitting from the radiator.

1. Install the TOC fitting to the radiator. Tighten: Tighten the fitting to 18 N.m (13 lb ft).
2. Connect the TOC line to the TOC fitting. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
3. Snap the plastic cap onto the TOC fitting.
4. Ensure that the plastic cap is fully seated against the fitting.
5. Ensure that no gap is present between the cap and the fitting.
6. Remove the drain pan from under the vehicle.
7. Lower the vehicle.
8. Inspect the fluid level and add fluid if necessary. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .

1. Remove the radiator support. Refer to «Radiator Support Replacement»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) in Engine Cooling.
2. Disengage the plastic cap from the TOC fitting. Pull the plastic cap back along the pipe.
3. Disconnect the TOC line from the TOC fitting. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
4. Remove the TOC fitting from the radiator.

1. Install the TOC fitting to the radiator. Tighten: Tighten the fitting to 18 N.m (13 lb ft).
2. Connect the TOC line to the TOC fitting. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
3. Snap the plastic cap onto the TOC fitting.
4. Ensure that the plastic cap is fully seated against the fitting.
5. Ensure that no gap is present between the cap and the fitting.
6. Install the radiator support. Refer to «Radiator Support Replacement»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) in Engine Cooling.
7. Inspect the fluid level and add fluid if necessary. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .

1. Recover the refrigerant from the A/C system. Refer to «Refrigerant Recovery and Recharging»(/cadillac/xlr/i-2003-2009/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning__refrigerant-recovery-and-recharging) in Heating, Ventilation and Air Conditioning.
2. Remove the upper radiator support. Refer to «Radiator Support Replacement»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) in Engine Cooling.
3. Disconnect the upper transmission oil cooler (TOC) line from the radiator. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
4. Remove the A/C compressor. Refer to «Compressor Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
5. Remove the accessory belt tensioner top bolt (1).
6. Remove the accessory belt tensioner lower bolt (2).
7. Remove the accessory belt tensioner.
8. Remove the A/C compressor and power steering pump bracket bolts.
9. Remove the A/C compressor and power steering pump bracket.
10. Raise the engine cradle back into position.
11. Install the RH cradle mounting nuts.
12. Remove the support jacks from beneath the vehicle.
13. Lower the vehicle.
14. Install the engine support fixture. Refer to «Engine Support Fixture»(/cadillac/xlr/i-2003-2009/remont/mechanical/#engine-mechanical-46l-lh2-1-of-5__engine-support-fixture) in Engine Mechanical - 4.6L.
15. Raise the vehicle approximately 0.61 m (2.0 ft) off the ground.
16. Support the engine cradle with a jack stands.
17. Remove the RH cradle mounting nuts.
18. Lower the RH engine cradle assembly approximately 0.375 in (51.0 mm)
19. Remove the RH engine mount upper nut.
20. Remove the RH engine mount lower nut
21. Remove the RH engine mount bracket bolts.
22. Using the J 28467-B , raise the engine assembly approximately 0.75 in (19.0 mm) to remove RH engine mount bracket
23. Remove the RH engine mount bracket.
24. Remove the RH engine mount heat shield from the engine mount.
25. Remove the RH engine mount.
26. Raise and support the vehicle.
27. Remove the TOC line to oil pan retaining nuts.
28. Remove the TOC line to oil pan retaining clips.
29. Disconnect the upper and lower TOC retainer clip.
30. Disconnect the front TOC lines from the rear TOC line set. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
31. Disconnect the oil level sensor electrical connector.
32. Remove the TOC lines.

1. Install the TOC lines.
2. Connect the oil level sensor electrical connector.
3. Connect the front TOC lines to the rear TOC line set. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
4. Connect the upper and lower TOC retainer clip.
5. Install the TOC line to oil pan retaining clips.
6. Install the TOC line to oil pan retaining nuts. Tighten: Tighten the nuts to 12 N.m (9 lb ft).
7. Lower the vehicle.
8. Install the RH engine mount.
9. Install the RH engine mount heat shield to the engine mount.
10. Install the RH engine mount bracket.
11. Install the RH engine mount bracket bolts. Tighten: Tighten the bolts to 58 N.m (43 lb ft).
12. Using the J 28467-B , lower the engine assembly into position.
13. Install the RH engine mount lower nut Tighten: Tighten the nut to 58 N.m (43 lb ft).
14. Install the RH engine mount upper nut. Tighten: Tighten the nut to 58 N.m (43 lb ft).
15. Install the A/C compressor and power steering pump bracket.
16. Install the A/C compressor and power steering pump bracket bolts. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
17. Install the accessory belt tensioner.
18. Install the accessory belt tensioner lower bolt (2). Tighten: Tighten the bolt to 25 N.m (18 lb ft).
19. Install the accessory belt tensioner top bolt (1). Tighten: Tighten the bolt to 25 N.m (18 lb ft).
20. Install the A/C compressor. Refer to «Compressor Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
21. Connect the upper transmission oil cooler (TOC) line to the radiator. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
22. Install the upper radiator support. Refer to «Radiator Support Replacement»(/cadillac/xlr/i-2003-2009/remont/cooling-system-mechanical/#engine-cooling-system) in Engine Cooling.
23. Evacuate and recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(/cadillac/xlr/i-2003-2009/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning__refrigerant-recovery-and-recharging) in Heating, Ventilation and Air Conditioning.
24. Check the transmission fluid level, add if necessary. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .

1. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/xlr/i-2003-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the driveline tunnel closeout panel. Refer to «Driveline Tunnel Closeout Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
3. Disconnect the front transmission oil cooler (TOC) inlet and outlet lines from the rear TOC inlet and outlet lines. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) . Cap or plug the open TOC pipes.
4. Remove the TOC block fitting bolt from the transmission housing.
5. Rotate the TOC block fitting to unsecure the upper TOC pipe.
6. Disconnect the upper and lower TOC pipes from the transmission. Cap or plug the TOC pipes and transmission fittings to prevent system contamination.
7. Remove the forward TOC pipe bracket bolt.
8. Remove the forward TOC pipe bracket.
9. Remove the rear TOC pipe bracket bolt.
10. Remove the rear TOC pipe bracket.
11. Remove the TOC pipes from the vehicle.

1. Install the TOC pipes into position.
2. Install the rear TOC pipe bracket.
3. Install the rear TOC pipe bracket bolt. Tighten: Tighten the bolt to 12 N.m(9 lb ft).
4. Install the forward TOC pipe bracket.
5. Install the forward TOC pipe bracket bolt. Tighten: Tighten the bolt to 12 N.m(9 lb ft).
6. Remove caps or plugs from the TOC pipes and transmission fittings.
7. Connect the upper and lower TOC pipes to the transmission.
8. Rotate the TOC block fitting to secure the upper TOC pipe.
9. Install the TOC block fitting bolt to the transmission housing. Tighten: Tighten the bolt to 25 N.m(18 lb ft).
10. Remove the caps or plugs from the TOC pipes.
11. Connect the front TOC inlet and outlet lines to the rear TOC inlet and outlet lines. Refer to «Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
12. Install the driveline tunnel closeout panel. Refer to «Driveline Tunnel Closeout Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
13. Lower the vehicle.
14. Check the transmission fluid level, add fluid if necessary. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .

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) in General Information.
2. Remove the oil pressure test plug.

1. Install the oil pressure test plug. Tighten: Tighten the oil pressure test plug to 11 N.m (97 lb in).
2. Check the transmission fluid level (fill if necessary). Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .
3. Lower the vehicle.

1. Remove the Transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the transmission wiring harness connector (1) from the transmission by rotating the locking latch (2) counterclockwise.
3. Disconnect the internal wiring harness from components (1-8).
4. Remove the internal wiring harness retainer (2) from the internal wiring harness (1).
5. Remove the internal wiring harness (2) from the transmission.
6. Remove the O-ring seals (3) from the internal wiring harness (2) only if the O-rings are cut or worn.

1. Install new O-ring seals (3) onto the internal wiring harness (2) if the O-rings were previously removed.
2. Install the internal wiring harness (2) to the transmission.
3. Install the internal wiring harness retainer (2) to the internal wiring harness (1).
4. Connect the internal wiring harness to components (1-8).
5. Connect the transmission wiring harness connector (1) to the transmission by rotating the locking latch (2) clockwise.
6. Install the Transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
7. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Place the transmission in Neutral.
2. Remove differential. Refer to «Differential Replacement»(/cadillac/xlr/i-2003-2009/remont/differentials-drive-axles/#rear-drive-axle) in Driveline/Axle.
3. Place a suitable transmission jack under the transmission pan to support the transmission.
4. Remove the bolts (3) from the case extension housing.
5. Remove the case extension housing (2) and the gasket seal (1).

1. Install the case extension housing (2) and the gasket seal (1).
2. Install the case extension housing bolts (3). Tighten: Tighten the case extension housing bolts to 22 N.m (16 lb ft).
3. Install the differential. Refer to «Differential Replacement»(/cadillac/xlr/i-2003-2009/remont/differentials-drive-axles/#rear-drive-axle) in Driveline/Axle.
4. Lower the vehicle.
5. Place the transmission in Park.

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (1) from the input speed sensor (2).
3. Remove the input speed sensor bolt (2).
4. Remove the input speed sensor (1).
5. Inspect the input speed sensor (1) for the following conditions: Damaged or missing magnet Damaged housing Bent or missing electrical terminals Metal contamination stuck to magnet

1. Install the input speed sensor (1).
2. Install the input speed sensor bolt (2). Tighten: Tighten the input speed sensor bolt to 11 N.m (97 lb in).
3. Connect the electrical wiring harness connector (1) to the input speed sensor (2).
4. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (3) from the output speed sensor (2).
3. Remove the output speed sensor bolt (3).
4. Remove the output speed sensor (2).
5. Remove the output speed sensor spacer (1).
6. Inspect the output speed sensor (2) for the following conditions: Damaged or missing magnet Damaged housing Bent or missing electrical terminals

1. Install the output speed sensor spacer (1).
2. Install the output speed sensor (2).
3. Install the output speed sensor bolt (3). Tighten: Tighten the output speed sensor bolt to 11 N.m (97 lb in).
4. Connect the electrical wiring harness connector (3) to the output speed sensor (2).
5. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (2) from the 1-2 shift solenoid (1).
3. Using a small screwdriver or pick, remove the 1-2 shift solenoid retainer from the control valve body.
4. Remove the 1-2 shift solenoid (7) from the control valve body.
5. Remove the O-ring seals (4-5) from the 1-2 shift solenoid (7) ONLY if the O-rings are cut or worn.

1. Install new O-ring seals (4-5) to the 1-2 shift solenoid (7), if the O-rings were previously removed.
2. Install the 1-2 shift solenoid (7) into the control valve body.
3. Install the 1-2 shift solenoid retainer into the control valve body.
4. Connect the electrical wiring harness connector (2) to the 1-2 shift solenoid (1).
5. Install the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
6. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (1) from the 2-3 shift solenoid (2).
3. Using a small screwdriver or pick, remove the 2-3 shift solenoid retainer from the control valve body.
4. Remove the 2-3 shift solenoid (7) from the control valve body.
5. Remove the O-ring seals (4-5) from the 2-3 shift solenoid (7) ONLY if the O-rings are cut or worn.

1. Install new O-ring seals (4-5) to the 2-3 shift solenoid (7), if the O-rings were previously removed.
2. Install the 2-3 shift solenoid (7) into the control valve body.
3. Install the 2-3 shift solenoid retainer into the control valve body.
4. Connect the electrical wiring harness connector (1) to the 2-3 shift solenoid (2).
5. Install the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
6. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (1) from the 4-5 shift solenoid (2).
3. Using a small screwdriver or pick, remove the 4-5 shift solenoid retainer from the control valve body.
4. Remove the 4-5 shift solenoid (7) from the control valve body.
5. Remove the O-ring seals (4-5) from the 4-5 shift solenoid (7) ONLY if the O-rings are cut or worn.

1. Install new O-ring seals (4-5) to the 4-5 shift solenoid (7), if the O-rings were previously removed.
2. Install the 4-5 shift solenoid (7) into the control valve body.
3. Install the 4-5 shift solenoid retainer into the control valve body.
4. Connect the electrical wiring harness connector (1) to the 4-5 shift solenoid (2).
5. Install the transmission fluid pan. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
6. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the electrical wiring harness connector (2) from the pressure control solenoid (1).
3. Using a small screwdriver or pick, remove the pressure control solenoid retainer from the control valve body.
4. Remove the pressure control solenoid (1) from the control valve body.
5. Remove the O-ring seals (3-4) from the pressure control solenoid (1), ONLY if the O-rings are cut or worn.

1. Install new O-ring seals (3-4) to the pressure control solenoid (1), if the O-rings were previously removed.
2. Install the pressure control solenoid (1) into the control valve body.
3. Install the pressure control solenoid retainer into the control valve body.
4. Connect the electrical wiring harness connector (2) to the pressure control solenoid (1).
5. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
6. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Loosen, but do not remove, the control valve body to transmission case bolts. Refer to «Control Valve Body Accumulator Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
3. Continue to loosen the bolts until there is a gap of 6.35 mm (0.25 in) between the control valve body and the transmission case. This will allow for removal of the torque converter clutch (TCC) pulse width modulation (PWM) solenoid valve without completely removing the valve body from the transmission.
4. Disconnect the electrical wiring harness connector (1) from the TCC PWM solenoid valve (2).
5. Using a small screwdriver or pick, remove the TCC PWM solenoid valve retainer from the control valve body.
6. Remove the TCC PWM solenoid valve (1) from the control valve body.
7. Remove the O-ring seals (3-4) from the TCC PWM solenoid valve (1), ONLY if the O-rings are cut or worn.

1. Install new O-ring seals (3-4) to the TCC PWM solenoid valve (1), if the O-rings were previously removed.
2. Install the TCC PWM solenoid valve (1) into the control valve body.
3. Install the TCC PWM solenoid valve retainer into the control valve body.
4. Connect the electrical wiring harness connector (1) to the TCC PWM solenoid valve (2).
5. Tighten the control valve body bolts. Refer to «Control Valve Body Accumulator Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
6. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
7. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
2. Disconnect the internal electrical wiring harness connectors from all internal electrical components (1-8).
3. Remove ONLY bolts (1, 3) from the valve body assembly. Do NOT remove bolts (2) called out in the graphic.
4. Remove the bolts (3) securing the control valve body accumulator assembly (1) and manual shaft detent assembly (2) to the transmission case.
5. Remove the manual shaft detent assembly (2) and control valve body accumulator assembly (1) from the transmission.
6. Remove the fluid passage sleeves only if replacement of the sleeves is necessary.

1. Install NEW fluid passage sleeves if previously removed.
2. Install the control valve body accumulator assembly (1) and manual shaft detent spring (2) to the transmission.
3. Install the manual shaft detent spring bolts (3) and hand tighten.
4. Confirm that the manual shift shaft detent lever locating pin (2) is properly engaged with the manual valve link (1).
5. Confirm that the detent spring roller (4) is properly engaged with the manual shift shaft switch (3).
6. Install the control valve body accumulator assembly to the transmission case bolts (1-3) and hand tighten.
7. Tighten the control valve body assembly bolts in sequence. Tighten: Tighten the bolts to 11 N.m (97 lb in).
8. Install a 0.8 mm spacer (2) between the manual shaft detent lever (1) and the manual shaft detent spring (3).
9. Tighten the detent spring bolts. Tighten: Tighten the bolts to 11 N.m (97 lb in).
10. Remove the spacer (2).
11. Connect the internal electrical wiring harness connectors to all internal electrical components (1-8).
12. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid and Filter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__automatic-transmission-fluid-and-filter-replacement) .
13. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

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 right front wheelhouse panel. Refer to «Wheelhouse Filler Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) .
3. Remove the engine control module (ECM) bracket.
4. Disconnect the electrical connector from the TCM.
5. Remove the fasteners securing the TCM to the ECM bracket.
6. Remove the TCM.

1. Install the TCM to the ECM bracket.
2. Install the TCM fasteners to the bracket. Tighten: Tighten the fasteners to 15 N.m (11 lb ft).
3. Connect the electrical connector to the TCM.
4. Install the ECM bracket.
5. Install the ECM bracket fasteners. Tighten: Tighten the fasteners to 15 N.m (11 lb ft).
6. Install the wheelhouse panel. Refer to «Wheelhouse Filler Replacement»(/cadillac/xlr/i-2003-2009/remont/exterior-body-panels/#body-front-end) .
7. If a new TCM is being installed, program the ECM. Refer to «Service Programming System (SPS)»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
8. Lower the vehicle.
9. Refer to «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for programming and setup information.

1. Remove the transmission from the vehicle. Refer to «Transmission Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
2. Remove the torque converter from the transmission.
3. Remove the input shaft seal. Refer to «Torque Converter Fluid Seal Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__torque-converter-fluid-seal-replacement) .

1. Install the input shaft seal. Refer to «Torque Converter Fluid Seal Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__torque-converter-fluid-seal-replacement) .
2. Install the torque converter. Push the torque converter into position while rotating. The torque converter must be fully seated on the turbine shaft The torque converter must be fully seated in the pump drive gear
3. Install the transmission to the vehicle. Refer to «Transmission Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
4. Reset the TAP values. Refer to «Transmission Adaptive Functions»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__transmission-adaptive-functions) .

Torque Converter Fluid Seal Replacement

Tools Required

1. J 8092 Universal Driver Handle. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .
2. J 44766 Seal Installer. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .
3. J 45000 Seal Remover. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .

1. Remove the transmission torque converter. Refer to «Torque Converter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .
2. Remove and discard the torque converter seal bolts.
3. Remove the torque converter seal using J 45000 . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .

1. Assemble J 8092 onto J 44766 . See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2__special-tools) .
2. Install the torque converter seal onto the tool before installing into the case to prevent damage to the seal.
3. Install the torque converter seal into the torque converter housing.
4. Install the torque converter seal bolts. Tighten: Tighten the NEW torque converter seal bolts to 3.6 N.m (32 lb in).
5. Install the transmission torque converter. Refer to «Torque Converter Replacement»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#automatic-transmission-5l40-e5l50-e-introduction-2-of-2) .

Tools Required

J 42055 Transmission Support Fixture

Note. Failure to follow the proper removal and installation procedures may result in damage to the engine crankshaft thrust bearing.

Note. When tilting down the rear of the driveline, observe the clearance between the rear of the engine and the composite dash panel. Do not allow the engine to rest unsupported against the composite dash panel, or vehicle damage may result.

Note. When lowering and removing the rear of the driveline, observe the clearance between the rear of the transaxle assembly and the underbody to prevent damage.

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 differential to transmission lower nut. Removing the nut at this time will aid in separating the differential from the transmission after the driveline has been removed from the vehicle.
3. Remove the driveline support assembly. Refer to «Driveline Support Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) .
4. Remove the transmission to driveline support assembly bolts/studs.
5. Insert a flat-bladed screwdriver, or similar tool, between the edge of the driveline support assembly and the transmission, then begin to pry the driveline support assembly loose from the transmission.
6. Slowly slide the driveline support assembly away from the transmission while supporting the transmission torque converter.
7. Using a strap positioned from side-to-side, secure the transmission torque converter to the transmission.
8. Remove the differential to transmission bolts and nuts.
9. SLOWLY slide the differential from the transmission.
10. Remove the differential plate from the differential.
11. Remove the transmission from the J 42055 , if necessary.

Note. Failure to follow the proper removal and installation procedures may result in damage to the engine crankshaft thrust bearing.

1. Install the transmission to the J 42055 , if removed.
2. Install the differential plate to the transmission, use care not to damage the transmission output seal in the rear of the plate.
3. Position the differential plate seal flush with the transmission case.
4. SLOWLY slide the differential to the transmission.
5. Install the differential to transmission bolts and nuts. Tighten: Tighten the differential to transmission bolts and nuts to 50 N.m (37 lb ft).
6. Install the driveline support assembly. Refer to «Driveline Support Assembly Replacement»(/cadillac/xlr/i-2003-2009/remont/driveshaft-universal-joints/#propeller-shaft) .
7. Install the engine flywheel housing access plug.
8. Flush the transmission oil cooler. Refer to «Transmission Fluid Cooler Flushing and Flow Test (J45096)»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service__transmission-fluid-cooler-flushing-and-flow) or «Transmission Fluid Cooler Flushing and Flow Test (J35944 A)»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service__transmission-fluid-cooler-flushing-and-flow) .
9. Lower the vehicle.
10. Check the transmission fluid level. Refer to «Transmission Fluid Check»(/cadillac/xlr/i-2003-2009/remont/automatic-trans/#how-to-diagnosis-troubleshooting-the-automatic-transmission-5l40-e5l50-e-service) .
11. Road test the vehicle.
12. Inspect for fluid leaks.
13. Perform a final inspection for the proper fluid level.

Torque Converter Clutch/Cruise Control Release Switch Adjustment

1. Rotate the switch (1) counter-clockwise in order to release the switch from the retainer.
2. Insert the switch (1) into the retainer until the switch is fully seated against the brake pedal arm.
3. Rotate the switch clockwise in order to lock the switch into position. Measure: Measure the distance from the end of the barrel on the switch to the pedal arm, ensure that the clearance is 1.5-1.7 mm (1/16 in). If the distance is not correct, perform step 1 and step 2 again. Measure: The following pedal travel statement may be used in order to inspect for proper adjustment of the release switch: The release switch assembly must be closed at 3.5-12.5 mm (1/8-1/2 in) brake pedal travel, measured at the centerline of the brake pedal assembly. Nominal actuation of the release assembly contacts is about 4.5 mm (3/16 in).

Driver Shift Control

The floor shift control is located in the center console assembly. It contains the upshift and downshift switches for the driver shift control system. The driver shift control system is activated when the floor shift control lever is moved to the right into the manual position from the drive position. When the manual position is selected, an upshift is requested by pushing the floor shift control lever forward to the + position and a downshift is requested by pulling the floor shift control lever to the - position. When an upshift or a downshift is requested, a signal is sent to the TCM which commands the shift solenoids ON or OFF to achieve the appropriate gear.

Scheme 34

Transmission General Description

The Hydra-Matic 5L50-E is a fully automatic, five speed, rear wheel drive, electronically controlled transmission. It consists primarily of a four-element torque converter, one planetary gear set, friction and mechanical clutches and a hydraulic pressurization and control system.

The TCM commands shift solenoids, within the transmission, on and off to control shift timing. The TCM controls shift feel through the pressure control solenoid. The TCM also controls the apply and release of the torque converter clutch which allows the engine to deliver the maximum fuel efficiency without sacrificing vehicle performance. The hydraulic system primarily consists of a vane type pump, two control valve bodies, two channel plates, converter housing and case. The pump maintains the working pressures needed to stroke the clutch pistons that apply or release the friction components. These friction components, when applied or released, support the automatic shifting qualities of the transmission. The friction components used in this transmission consist of nine multiple disc clutches. The multiple disc clutches combine with four mechanical sprag clutches, to deliver six different gear ratios through the gear set. The gear set then transfers torque through the output shaft.

The transmission can be operated in any one of the seven different modes.

1. P - Park position enables the engine to be started while preventing the vehicle from rolling either forward or backward. For safety reasons, the vehicle parking brake should be used in addition to the transmission Park position. Since the output shaft is mechanically locked to the case through the parking pawl and rear internal gear, Park position should not be selected until the vehicle has come to a complete stop.
2. R - Reverse enables the vehicle to be operated in a rearward direction.
3. N - Neutral position enables the engine to start and operate without driving the vehicle. If necessary, this position should be selected to restart the engine while the vehicle is moving.
4. OD - Overdrive range should be used for all normal driving conditions for maximum efficiency and fuel economy. Overdrive range allows the transmission to operate in each of the five forward gear ratios. Downshifts to a lower gear, or higher gear ratio are available for safe passing by depressing the accelerator or by manually selecting a lower gear with the shift selector.
5. 4 - Manual Fourth can be used for conditions where it may be desirable to use only four gear ratios. These conditions include towing a trailer and driving on hilly terrain as described above. This range is also helpful for engine braking when descending slight grades. Upshifts and downshifts are the same as in Overdrive range for first, second, third and fourth gears except that the transmission will not shift into fifth gear. Manual Fourth can be selected at any vehicle speed but will downshift into fourth gear only if vehicle speed is low enough not to overrev the engine, calibratable in TCM.
6. 3 - Manual Third adds more performance for congested traffic and hilly terrain. It has the same starting ratio, first gear, as Manual Fourth but prevents the transmission from shifting above Third gear. Thus, Manual Third can be used to retain third gear for acceleration and engine braking as desired. Manual Third can be selected at any vehicle speed but will downshift into third gear only if vehicle speed is low enough not to overrev the engine, calibratable in TCM.
7. 2 - Manual Second adds more performance for congested traffic and hilly terrain. It has the same starting ratio, first gear, as Manual Third but prevents the transmission from shifting above second gear. Thus, Manual Second can be used to retain second gear for acceleration and engine braking as desired. Manual Second can be selected at any vehicle speed but will downshift into second gear only if vehicle speed is low enough not to overrev the engine, calibratable in TCM.

When the vehicle speed slows down to a speed low enough not to overrev the engine, calibratable in TCM, the transmission will automatically downshift into first gear. This is particularly beneficial for maintaining maximum engine braking when descending steep grades.

Transmission Component and System Description

The mechanical components of the 5L40/5L50-E are as follows

1. A torque converter with an electronically controlled capacity clutch (ECCC) This transmission is equipped with an electronically controlled capacity clutch (ECCC). The pressure plate does not fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in SECOND, THIRD and FOURTH gears, depending on the vehicle application. ECCC was developed to reduce the possibility of noise, vibration or chuggle caused by TCC apply. Typical apply speeds are 49-52 km/h (30-32 mph) in THIRD gear and 65-73 km/h (40-45 mph) in FOURTH gear. Full lockup is available at highway speeds on some applications.
2. Direct and reverse clutch assembly
3. Forward and coast clutch assembly
4. Input sun gear shaft and forward sprag clutch assembly
5. Output shaft assembly, with rear internal gear
6. Intermediate clutch sprag assembly
7. Overdrive clutch housing
8. Low clutch sprag
9. Center support
10. Input and reaction carrier
11. Fluid pump assembly
12. Control valve body and accumulator assembly

The electrical components of the 5L40/5L50-E are as follows

1. 1-2, 2-3 and 4-5 shift solenoids
2. Transmission manual shift shaft switch assembly
3. Transmission pressure control (PC) solenoid
4. TCC pulse width modulation (PWM) solenoid valve
5. Transmission fluid temperature (TFT) sensor
6. Input speed sensor (ISS)
7. Output speed sensor (OSS)

For more information, refer to Electronic Component Description .

Transmission Adaptive Functions

The Hydra-Matic 5L50-E uses a line pressure control system which has the ability to adapt the system line pressure in order to compensate for normal wear of clutch fiber plates, seals, springs, etc. The adapt feature is similar in function to fuel control (integrator/block learn).

The Hydra-Matic 5L50-E transmission uses the adapt function for garage shifts, upshifts, and TCC application. The transmission control module (TCM) monitors the input shaft speed in order to determine if the shift is occurring too fast or too slow and adjusts the pressure control solenoid in order to maintain the correct shift feel.

Shift Adapt Relearn Procedure

Perform the transmission adaptive learn procedure after any of the following service procedures

1. Transmission replacement or major overhaul
2. TCM replacement or reflash
3. Valve body replacement

After certain repairs, the adaptive values have to be erased. These cells then need to be refilled to get an optimal shift quality. However, only coast downshifts will require special care described in the following steps.

Coast Downshift Adapt Procedure

1. Drive the vehicle in D5 to obtain normal transmission operating temperature.
2. Travel 73 km/h (45 mph) then lightly brake to a stop, taking about 13 seconds.
3. Travel 73 km/h (45 mph) then moderately brake to a stop, taking about 6 seconds.
4. Travel 40 km/h (25 mph) then coast to about 8 km/h (5 mph).

Repeat the above steps 3 times each.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

Transmission Indicators and Messages

The following transmission related indicators and messages may be displayed on the instrument panel cluster (IPC). For a complete listing and description of all vehicle indicators and messages, refer to Indicator/Warning Message Description and Operation in Instrument Panel, Gages, and Console.

Scheme 35

The transmission control module (TCM) is mounted in the engine compartment and connects directly to the engine wiring harness. A single 42-way connector is used to make the connection between the vehicle wiring and the TCM. The TCM is an electronic control module that receives input or provides output in order to control the operation of the 5L50-E automatic transmission.

The TCM receives the following inputs from the engine control module (ECM)

1. Engine speed and torque values
2. Engine intake air temperature (IAT), accelerator pedal position (APP) information
3. Engine coolant temperature (ECT)
4. Kickdown request
5. Traction control status
6. Driver selected shift mode
7. Air-conditioning (A/C) status
8. Cruise control status

The ECM provides this data to the TCM through the controller area network (CAN). The CAN is a 2-wire communication connection between the 2 controllers.

Other TCM inputs are the following

1. Battery and ignition voltage
2. Brake switch status
3. Transmission manual shift shaft switch assembly
4. Transmission fluid temperature (TFT)
5. Transmission input shaft speed (ISS) sensor
6. Transmission output shaft speed (OSS) sensor

The TCM provides the following outputs in order to control the automatic transmission

1. Shift solenoids to control transmission shifting
2. TCC PWM solenoid operation controls the apply and release of the torque converter clutch ASM
3. Pressure control solenoid (PCS) regulates transmission line pressure

Other TCM outputs provided to the ECM are the following

1. MIL illumination request
2. Vehicle speed
3. Transmission input speed
4. Transmission fluid temperature
5. Commanded gear status
6. TCC status
7. Torque reduction requests
8. Manual shift shaft switch status
9. Transmission service status

Scheme 36

The transmission manual shift shaft switch assembly (602) is a sliding contact switch attached to the manual shift shaft inside the transmission case. The five inputs to the TCM from the transmission manual shift shaft switch assembly indicate the transmission gear selector lever position. This information is used for engine controls as well as determining the transmission shift patterns. The state of each input is available for display on the scan tool. The five input parameters represented are Signal A, Signal B, Signal C, Signal P (Parity) and Signal N (P/N Start).

Scheme 37

The A/T OSS sensor is a variable reluctance magnetic pickup located in the rear of the transmission case. The sensor is mounted in the case (24) opposite the rear internal gear (560). The rear internal gear is splined to the output shaft assembly (562). The sensor consists of a permanent magnet surrounded by a coil of wire. As the output shaft and rear internal gear rotate, an alternate current (AC) is induced in the coil by the 'teeth' on the rear internal gear as they pass by the magnetic pickup. Therefore, whenever the vehicle is moving, the A/T OSS sensor produces an AC voltage signal proportional to vehicle speed.

At the TCM, the AC signal is electronically converted to a 5 volt square wave pattern. The square wave pattern can then be interpreted as transmission output speed by the TCM through the frequency of square waves in a given time frame. The square waves can be thought of as a representation of the rear internal gear teeth. Therefore, the more teeth or waves that pass by the magnetic pickup in a given time frame, the faster the vehicle is moving. The square wave pattern is compared to a fixed clock signal internal to the TCM to determine transmission output speed.

Scheme 38

The A/T ISS sensor operates identically to the A/T OSS sensor except that is uses the stamped teeth on the reverse clutch input housing assembly (401) as the rotor reluctor. Remember that the reverse clutch input housing assembly is driven at converter turbine speed. The A/T ISS sensor square wave pattern is also compared to a fixed clock signal internal to the TCM to determine actual converter turbine speed. The TCM uses transmission input and output speeds to help determine line pressure, transmission shift patterns, TCC apply pressure, gear ratios, and TCC slippage for diagnostic purposes.

Scheme 39

The TFT sensor is part of the transmission wiring harness assembly (55). The TFT sensor is a resistor, or thermistor, which changes value based on temperature. Refer to Transmission Fluid Temperature Sensor Specifications . The sensor has a negative-temperature coefficient. This means that as the temperature increases, the resistance decreases, and as the temperature decreases the resistance increases. The TCM supplies a 5-volt reference signal to the sensor and measures the voltage drop in the circuit. When the transmission fluid is cold the sensor resistance is high and the TCM detects high signal voltage. As the fluid temperature warms to a normal operating temperature, the resistance becomes less and the signal voltage decreases. The TCM uses this information to maintain shift quality and torque converter clutch apply quality over operating temperature range.

If transmission fluid temperatures become excessively high, above approximately 140°C (248°F), the TCM will disable ECCC function and command lock up mode. Applying the TCC serves to reduce transmission fluid temperatures created by the fluid coupling in the torque converter with the TCC released.

Above approximately 149°C (284°F), the TCM will set a transmission fluid temperature code (P0218). This causes the TCM to use a fixed default value of 135°C (275°F) as the transmission fluid temperature input signal.

Scheme 40

The Hydra-Matic 5L50-E uses three electromagnetic shift solenoid valves 1-2, 2-3 and 4-5 to control upshifts and downshifts in all forward gear ranges. The shift solenoid valves are all identical, normally closed, 3-port, ON/OFF type solenoids controlled by the TCM. These shift solenoid valves work together in a combination of ON and OFF sequences to control the various shift valves. The TCM uses numerous inputs to determine which solenoid state combination the transmission should be in. Refer to Shift Solenoid Valve State and Gear Ratio .

Scheme 41

The TCC PWM solenoid valve is a normally-closed, pulse width modulated (PWM) solenoid used to control the apply and release of the converter clutch. The TCM operates the solenoid with a negative duty cycle, at a fixed frequency of 32 Hz, to control the rate of TCC apply/release. The solenoid's ability to 'ramp' the TCC apply and release pressures results in a smoother TCC operation.

When vehicle operating conditions are appropriate to apply the TCC, the TCM increases the duty cycle to allow the TCC PWM solenoid valve to command TCC signal fluid pressure at a level sufficient to move the TCC enable valve and the TCC control valve to the apply position. Release pressure is directed to exhaust, and regulated apply fluid is directed to the apply side of the converter pressure plate/damper assembly. The TCM then increases the duty cycle to control a slippage of 20-80 RPM between the pressure plate/damper assembly and the converter cover. This provides for improved filtration of engine vibrations and allows the TCC to apply at low engine speeds in 2nd, 3rd, 4th and 5th gear. At high speed, lock up mode is set by activating the TCC PWM solenoid valve at maximum duty cycle.

Release of the TCC is achieved by decreasing the duty cycle to a level low enough to allow spring force to move the TCC enable valve and the TCC control valve to the release position. Apply fluid is directed to exhaust and converter feed fluid is directed into the release circuit to the release side of the pressure plate/damper assembly.

There are also some operating conditions that may prevent or enable TCC apply under various conditions, engine temperature, transmission temperature, or brake switch activation, depending on vehicle application.

TCC PWM solenoid valve resistance should measure between 10.0-11.5 when measured at 20°C (68°F). The resistance should measure approximately 16 at 150°C (300°F).

Scheme 42

The pressure control (PC) solenoid valve is a precision electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid's plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The TCM controls the PC solenoid valve based on various inputs including throttle position, transmission fluid temperature and gear state.

Duty Cycle, Frequency and Current Flow

A duty cycle may be defined as the percentage of time current is flowing through a solenoid coil during each cycle. The number of cycles that occur within a specified amount of time, usually measured in seconds, is called 'frequency.' Typically, the operation of an electronically controlled pulse width modulated solenoid is explained in terms of duty cycles and frequency.

The TCM controls the PC solenoid valve on a positive duty cycle at a fixed frequency of 292.5 Hz cycles per second. A higher duty cycle provides a greater current flow through the solenoid. The high positive side of the PC solenoid valve electrical circuit at the TCM controls the PC solenoid valve operation. The TCM provides a ground path for the circuit, monitors average current and continuously varies the PC solenoid valve duty cycle to maintain the correct average current flowing through the PC solenoid valve.

The duty cycle and current flow to the PC solenoid valve are mainly affected by throttle position and engine torque. As the throttle angle engine torque increases, the duty cycle is decreased by the TCM which decreases current flow to the PC solenoid valve. Current flow to the PC solenoid valve creates a magnetic field that moves the solenoid armature against spring force.

Transmission Adapt Function

Programming within the TCM also allows for automatic adjustments in shift pressure that are based on the changing characteristics of the transmission components. As the apply components within the transmission wear, shift time, the time required to apply a clutch, increases. In order to compensate for this wear, the TCM adjusts trim pressure by controlling the PC solenoid valve in order to maintain the originally calibrated shift timing. The automatic adjusting process is referred to as adaptive learning and it is used to assure consistent shift feel plus increase transmission durability. The TCM monitors the A/T ISS and the A/T OSS during commanded shifts to determine if a shift is occurring too fast, harsh or too slow, soft and adjusts the PC solenoid valve signal to maintain a set shift feel.

Scheme 43

The floor shift control is located in the center console assembly. It contains the upshift and downshift switches for the driver shift control system. The driver shift control system is activated when the floor shift control lever is moved to the right into the manual position from the drive position. When the manual position is selected, an upshift is requested by pushing the floor shift control lever forward to the + position and a downshift is requested by pulling the floor shift control lever to the - position. When an upshift or a downshift is requested, a signal is sent to the TCM which commands the shift solenoids ON or OFF to achieve the appropriate gear.

Scheme 44

The transmission electrical connector is an important part of the transmission operating system. Any interference with the electrical connection can cause the transmission to set diagnostic trouble codes (DTC) or affect proper operation.

The following items can affect the electrical connection

1. Bent terminals in the connector from rough handling during connection and disconnection
2. Wires backing away from the pins or coming uncrimped, in either the internal or the external wiring harness
3. Dirt or moisture contamination entering the connector when disconnected
4. Pins in the internal wiring connector backing out of the connector during connection
5. Transmission fluid leaking into the connector, wicking up into the external wiring harness and degrading the wire insulation
6. Low terminal tension in the external connector from excessive connection and disconnection of the wiring connector assembly
7. Terminal corrosion from contamination
8. Damaged connector or connector lock assembly

Remember the following points

1. In order to disconnect the connector, turn the connector clockwise and pull.
2. Do not pry the connector with a screwdriver or other tool.
3. The connector should screw into place with a positive feel and lock when properly installed.
4. Whenever the transmission external wiring connector is disconnected from the internal harness and the ignition is ON, transmission DTCs will set. Clear these DTCs after reconnecting the transmission connector.

Limp Home Mode Description

If a major electrical system failure occurs which could affect vehicle safety or damage the transmission during normal operation, the TCM enters a default mode. In the default mode, the transmission operates in the following manner

1. The pressure control solenoid is off and the line pressure is at maximum in order to minimize clutch slippage.
2. The TCC solenoid is off. The converter clutch is disabled.
3. All three of the shift solenoids are off. The transmission will operate in fifth gear if the vehicle has successfully completed a 1-2 upshift in the current ignition cycle. If the vehicle has not completed a 1-2 upshift in the current ignition cycle, the transmission will operate in fourth gear. If the transmission is operating in fifth gear, fourth gear may be obtained if the engine is stopped briefly and re-started.

In default mode, the gear selector lever is ineffective at selecting forward gear ranges. In fourth or fifth gear, heat builds up in the transmission quickly, particularly in stop and go traffic. Excessive heat build-up may cause transmission failure if the vehicle is driven for extended distances in default mode.

Special Tools

Special Tools Illustration Tool Number/ Description J 6125-1B Slide Hammer with Adapter J 8092 Driver Handle J 21867 Pressure Gage J 21867-2 Pressure Gage Adapter J 21867-15 Braided Transmission Oil Pressure Test Hose J 23129 Universal Seal Remover J 35616-B GM-Approved Terminal Test Kit J 35944-A Transmission Oil Cooler Flusher J 35944-22 Transmission Oil Cooler Flushing Fluid J 36850 Transjel Lubricant J 42055 Drivetrain Support Fixture J 44246 Solenoid Testing Kit J 44766 Seal Installer J 45000 Seal Remover J 45096 Transmission Oil Cooling System Flush and Flow Test Tool J 45681 Jumper Harness J 45806 Cooler Flushing Adapter

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Scheme 54

See also:
• DTC P0115
• DTC P0816
• DTC P2763
• Fastener Notice
• Lifting and Jacking the Vehicle
• Intermediate Pipe Replacement
• Driveline Tunnel Closeout Panel Replacement
• Console Trim Plate Replacement
• Component Fastener Tightening Notice
• Transmission Fluid Check
• Radiator Support Replacement
• Refrigerant Recovery and Recharging
• Compressor Replacement
• Engine Support Fixture
• Differential Replacement
• Service Programming System (SPS)
• Wheelhouse Filler Replacement
• Control Module References
• Transmission Fluid Cooler Flushing and Flow Test (J45096)
• Transmission Control Module Programming and Setup
• Indicator/Warning Message Description and Operation
• Transmission Fluid Temperature Sensor Specifications
• Automatic Transmission Control Replacement
• Special Tools
• Automatic Transmission Fluid and Filter Replacement
• Transmission Adaptive Functions
• Torque Converter Fluid Seal Replacement
• Shift Solenoid Valve State and Gear Ratio