Automatic Transmission - 5l40-e (Introduction, Service & Replacement) Cadillac CTS I

Transmission Fluid Temperature (TFT) Sensor Specifications

Transmission Fluid Temperature (TFT) Sensor Specifications

Fastener Tightening Specifications (Unit Repair)

Fastener Tightening Specifications

Fastener Tightening Specifications (On Vehicle)

Fastener Tightening Specifications (On Vehicle)

Transmission General Specifications

Transmission General Specifications

Fluid Capacity Specifications

Fluid Capacity Specifications (5L40-E)

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 (0.25 in)

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

Automatic Transmission Inline 20-Way Connector End View

Automatic Transmission Inline 20-Way Connector End - Transmission Side Connector Part Information Tab Pin Housing 20-way M (BK) with O-rings Pin Wire Color Circuit No. Function 1 OG 400 Output Speed Sensor (OSS) High Signal 2 BN 1786 Park/Neutral Signal 3 WH 401 OSS Low Signal 4 GN 1551 Ground 5 GY 898 4-5 Shift Solenoid Valve Control 6 WH 2762 TFT Sensor Low Reference 7 BK 772 Transmission Range Signal B 8 WH 1229 PC Solenoid Valve Low Control 9 BU 1223 2-3 Shift Solenoid Valve Control 10 RD 1227 TFT Sensor Signal 11 GY 776 Transmission Range Signal P 12 - - Not Used 13 GN 1228 PC Solenoid Valve High Control 14 BK 1222 1-2 Shift Solenoid Valve Control 15 WH 1231 ISS Low Signal 16 RD 771 Transmission Range Signal A 17 WH 1525 Solenoid Power Supply 18 YE 1230 ISS High Signal 19 BU 773 Transmission Range Signal C 20 YE 422 TCC Solenoid Valve Control

Automatic Transmission Inline 20-Way Connector End - Engine Side Connector Part Information Conn 20P F (BK) Locking Pin Wire Color Circuit No. Function 1 YE 400 Output Shaft Speed Sensor (OSS) High Signal 2 OG/BK 1786 Park/Neutral Signal 3 PU 401 OSS Low Signal 4 BK/WH 1551 Ground 5 PK 898 4-5 Shift Solenoid Valve Control 6 TN 2762 TFT Sensor Low Reference 7 YE 772 Transmission Range Signal B 8 L-BU/WH 1229 PC Solenoid Valve Low Control 9 YE/BK 1223 2-3 Shift Solenoid Valve Control 10 YE/BK 1227 TFT Sensor Signal 11 WH 776 Transmission Range Signal P 12 - - Not Used 13 OG/BK 1228 PC Solenoid Valve High Control 14 L-GN 1222 1-2 Shift Solenoid Valve Control 15 D- BU/WH 1231 ISS Low Signal 16 TN/WH 771 Transmission Range Signal A 17 OG 1525 Solenoid Power Supply 18 OG/BK 1230 ISS High Signal 19 GY 773 Transmission Range Signal C 20 TN/BK 422 TCC Solenoid Valve Control

Scheme 25

Automatic Transmission Internal Connector End Views

Automatic Transmission Internal Connector End Views - Transmission Manual Shift Shaft Switch Assembly Connector, Wiring Harness Side Connector Part Information 12146095 Conn 6F M/P 150.2 P2S (NA) Pin Wire Color Circuit No. Function A BN 1786 Park/Neutral Signal B GY 776 TR Signal P C BK 772 TR Signal B D RD 771 TR Signal A E BU 773 TR Signal C F GN 1551 TR Ground

Automatic Transmission Internal Connector End Views - 1-2 Shift Solenoid (SS) Valve Connector, Wiring Harness Side Connector Part Information 12146094 Conn 2F M/P 150.2 P2S (GY) Pin Wire Color Circuit No. Function A BK 1222 1-2 SS Control B WH 1525 Solenoid Power Supply

Automatic Transmission Internal Connector End Views - 2-3 Shift Solenoid (SS) Valve Connector, Wiring Harness Side Connector Part Information 12146094 Conn 2F M/P 150.2 P2S (GY) Pin Wire Color Circuit No. Function A BU 1223 2-3 SS Control B WH 1525 Solenoid Power Supply

Automatic Transmission Internal Connector End Views - 4-5 Shift Solenoid (SS) Valve Connector, Wiring Harness Side Connector Part Information 12146094 Conn 2F M/P 150.2 P2S (GY) Pin Wire Color Circuit No. Function A GY 898 4-5 SS Control B WH 1525 Solenoid Power Supply

Automatic Transmission Internal Connector End Views - Pressure Control Solenoid (PCS) Valve Connector, Wiring Harness Side Connector Part Information 12146094 Conn 2F M/P 150.2 P2S (GY) Pin Wire Color Circuit No. Function A GN 1228 PC Solenoid High Control B WH 1229 PC Solenoid Low Control

Automatic Transmission Internal Connector End Views - Torque Converter Clutch (TCC) Pulse-Width Modulated (PWM) Solenoid Valve Connector, Wiring Harness Side Connector Part Information 12162202 Conn 2F M/P 150.2 P2S (BU) Pin Wire Color Circuit No. Function A YE 422 TCC PWM Control B WH 1525 Solenoid Power Supply

Automatic Transmission Internal Connector End Views - Output Speed Sensor (OSS) Connector, Wiring Harness Side Connector Part Information 12162201 Conn 2F M/P 150.2 P2S (NA) Pin Wire Color Circuit No. Function A OG 400 OSS High Signal B WH 401 OSS Low Signal

Automatic Transmission Internal Connector End Views - Input Speed Sensor (ISS) Connector, Wiring Harness Side Connector Part Information 12162201 Conn 2F M/P 150.2 P2S (NA) Pin Wire Color Circuit No. Function A YE 1230 ISS High Signal B WH 1231 ISS Low Signal

Automatic Transmission Related Connector End Views

Automatic Transmission Related Connector End Views - TCC Brake Switch Connector, Wiring Harness Side Connector Part Information 12033704 Conn 4F M/P 280 (BK) Pin Wire Color Circuit No. Function A PK 1039 Ignition 1 Voltage B PU 420 TCC Brake Switch Signal C PK 1039 Ignition 1 Voltage D GY 847 Extended Travel Brake Switch Signal

Scheme 26

Automatic Transmission Related Connector End Views - Transmission Control Module Connector Connector Part Information Conn 42F Module 1 Socket Housing Pin Wire Color Circuit No. Function 1 YE 400 Output Speed Sensor (OSS) High Signal 2 PU 401 OSS Low Signal 3 OG/BK 1228 PC Solenoid Valve High Control (HSD1) 4 TN/BK 422 TCC Solenoid Valve Control 5 YE 343A Accessory Voltage 6 BK/WH 1551E Ground 7 BK/WH 1551C Ground 8 OG 1525 Solenoid Power Supply (HSD2) 9 PK 239C Ignition Voltage 10 OG/BK 1230 ISS High Signal 11 D-BU /WH 1231 ISS Low Signal 12 - - Not Used 13 WH/BK 5043B Serial Data 14 - - Not Used 15 YE/BK 1227 TFT Sensor Signal 16-17 - - Not Used 18 YE/BK 1223 2-3 Shift Solenoid Valve Control 19 PU 898 4-5 Shift Solenoid Valve Control 20 - - Not Used 21 TN 2762 TFT Sensor Low Reference 22-23 - - Not Used 24 YE 772 Transmission Range Switch Signal B 25 GY 773 Transmission Range Switch Signal C 26 - - Not Used 27 RD/WH 1440D Battery Positive Voltage 28 - - Not Used 29 L-BU /WH 1229 PC Solenoid Valve Low Control 30 L-GN 1222 1-2 Shift Solenoid Valve Control 31 - - Not Used 32 WH 2500 High Speed GMLAN Serial Data Bus + (CAN) 33 GN 2501 High Speed GMLAN Serial Data Bus - (CAN) 34-35 - - Not Used 36 TN/WH 771 Transmission Range Switch Signal A 37 WH 776 Transmission Range Switch Signal P 38 PU 420E TCC Brake Switch Signal 39-42 - - Not Used

Removal Procedure

1. Set the parking brake.
2. Remove the shift boot from the console trim plate by lightly prying up on the rear of the shift control boot.
3. Lift the shift control boot up over the shift knob.
4. Remove the shift knob retaining screw.
5. Lift the shift control boot and knob assembly off of the shift lever.

Installation Procedure

1. Install the shift control boot and knob assembly onto the shift lever.
2. Install the shift knob retaining screw.
3. Insert the front tabs of the shift control boot into the console trim plate opening.
4. Press the rear of the shift control boot down into the console trim plate opening.
5. Tug lightly to insure the shift control boot is securely attached to the console trim plate opening.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the shift control linkage adjustment nut.
3. Disengage the shift control linkage rod from the shift control assembly.
4. Lower the vehicle.
5. Remove the shift control boot. Refer to «Floor Shift Control Boot Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
6. Remove the center console assembly. Refer to «Console Replacement - Front Floor»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
7. Remove the electrical connector (1) from the shift control assembly.
8. Disconnect the shift lock actuator electrical connector (2) at the shift control assembly.
9. Remove the 4 nuts securing the shift control assembly to the tunnel reinforcement.
10. Remove the shift control assembly from the vehicle.

1. Install the shift control assembly to the tunnel reinforcement.
2. Install the 4 nuts securing the shift control assembly to the tunnel reinforcement. Tighten: Tighten the nuts to 12 N.m (106 lb in).
3. Install the electrical connector (1) to the shift control assembly.
4. Connect the shift lock actuator electrical connector (2) at the shift control assembly.
5. Install the center console assembly. Refer to «Console Replacement - Front Floor»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
6. Install the shift control boot. Refer to «Floor Shift Control Boot Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
8. Connect the shift control linkage rod to the shift control assembly.
9. Install the shift control linkage adjustment nut finger tight.
10. Adjust the shift control linkage. Refer to «Shift Control Linkage Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__shift-control-linkage-adjustment) .
11. Lower the vehicle.

Shift Control Linkage Adjustment

1. Position the shift lever in PARK.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Loosen the shift control linkage adjustment nut to allow the adjuster to slide freely.
4. Hold the selector lever on transmission against the rear stop to eliminate any play. Tighten: Tighten the shift control linkage adjustment nut to 9 N.m (80 lb in).
5. Lower the vehicle.
6. Inspect the operation of the starting system with the shift lever in each position. The engine should only crank when the lever is in the PARK or NEUTRAL position.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the nut from the shift control linkage rod.
3. Disconnect the shift control linkage rod from the shift control assembly.
4. Remove the manual shift shaft nut.
5. Remove the shift control linkage from the vehicle.

1. Install the shift control linkage to the vehicle.
2. Install the manual shift shaft nut. Tighten: Tighten the manual shift shaft nut to 15 N.m (11 lb ft).
3. Connect the shift control linkage rod to the shift control assembly.
4. Install the nut to the shift control linkage rod.
5. Adjust the shift control linkage. Refer to «Shift Control Linkage Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__shift-control-linkage-adjustment) .
6. Lower the vehicle.

1. Remove the left closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
2. Remove the torque converter clutch/cruise release switch (3) by pulling the upper switch out of the retainer.
3. Disconnect the electrical connector from the torque converter clutch/cruise release switch (3).

1. Connect the electrical connector to the torque converter clutch/cruise release switch (3).
2. Install the torque converter clutch/cruise release switch (3) into the upper retainer.
3. Adjust the torque converter clutch/cruise release switch. Refer to «Torque Converter Clutch/Cruise Control Release Switch Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__torque-converter-clutchcruise-control-release-switch) .
4. Install the left closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.

Torque Converter Clutch/Cruise Control Release Switch Adjustment

1. Remove the left closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
2. With the brake pedal depressed, insert the torque converter clutch/cruise release switch (3) into the retainer until the switch body seats in the retainer.
3. Note that CLICKS can be heard as the threaded portion of the switch is pushed through the retainer.
4. Slowly pull the brake pedal fully rearward against the stop until the CLICK sound can no longer be heard. The switch will be moved in the retainer providing proper adjustment.
5. Install the left closeout/insulator panel. Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.

1. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
2. Disconnect the auxiliary transmission cooler inlet line.
3. Disconnect the auxiliary transmission cooler outlet line.
4. Remove the auxiliary transmission oil cooler mounting bolts (1).
5. Remove the auxiliary transmission oil cooler.

1. Install the auxiliary transmission oil cooler.
2. Install the auxiliary transmission oil cooler mounting bolts (1). Tighten: Tighten the bolts to 6.5 N.m (58 lb in).
3. Connect the auxiliary transmission cooler outlet line.
4. Connect the auxiliary transmission cooler inlet line.
5. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
6. Check the transmission fluid level. Refer to «Transmission General Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__transmission-general-specifications) and/or «Fluid Capacity Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__fluid-capacity-specifications) .
7. Check the auxiliary transmission oil cooler for leaks.

Automatic Transmission Fluid/Filter Replacement

Tools Required

1. J 6125-1B Slide Hammer Adapter
2. J 23129 Universal Seal Remover
3. J 36850 Transjel Lubricant

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
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 .

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 General Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__transmission-general-specifications) , «Fluid Capacity Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__fluid-capacity-specifications) and «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
6. Lower the vehicle.
7. Inspect the oil pan gasket for leaks.

Tools Required

J 44827 Transmission Cooler Quick Disconnect

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
3. Place an oil drain pan under the transmission fluid cooler pipes near the radiator.
4. Disconnect the transmission fluid cooler pipes from the transmission fluid cooler by using the J 44827 .
5. Remove the bolt securing the transmission fluid cooler pipes bracket to the engine.
6. Remove the bolt securing the transmission fluid cooler pipes retainer to the transmission.
7. Remove the transmission fluid cooler pipes from the transmission, and position aside.
8. Remove the O-rings. Do not reuse the O-rings.

1. Install the fluid cooler pipe assembly to the vehicle.
2. Connect the transmission fluid cooler pipes to the transmission fluid cooler at the radiator using the following steps: Push the transmission fluid cooler pipes into the quick connect fitting, until a "click" is heard. Tug gently on the transmission cooler pipes to ensure proper retention.
3. Place NEW seals over the transmission fluid cooler pipes.
4. Insert the transmission fluid cooler pipes into the transmission.
5. Install the bolt securing the transmission fluid cooler pipe retainer to the transmission. Tighten: Tighten the transmission fluid cooler pipe retainer bolt to 25 N.m (18 lb ft).
6. Install the bolt securing the transmission fluid cooler pipes brace to the engine. Tighten: Tighten the transmission fluid cooler pipes brace bolt to 50 N.m (37 lb ft).
7. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
8. Lower the vehicle.
9. Inspect the transmission fluid level. Refer to «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
10. Inspect for fluid leaks.

J 44827 Transmission Cooler Quick Disconnect

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
3. Remove the wiring harness retainer (2) from the transmission fluid cooler pipes brace (1).
4. Remove the bolt securing the transmission fluid cooler pipes brace to the engine.
5. Place an oil drain pan under the transmission fluid cooler pipes.
6. Disconnect the fluid cooler hoses from the transmission fluid cooler by using the J 44827 .
7. Remove the bolt securing the transmission fluid cooler pipe retainer to the transmission.
8. Remove the transmission fluid cooler pipes from the transmission, and position aside.
9. Remove the O-rings. Do not reuse the O-rings.
10. Remove the fluid cooler pipe assembly from the vehicle.
11. Remove the transmission fluid inlet pipe (1) from the retainer (2).

1. Hook the retainer (2) over the transmission fluid inlet pipe (1).
2. Install the fluid cooler pipe assembly to the vehicle.
3. Connect the fluid cooler lines to the transmission fluid cooler using the following steps. Push the transaxle fluid cooler pipe into the quick connect fitting, until a "click" is heard. Tug gently on the cooler pipe to ensure proper retention.
4. Place NEW seals over the transmission fluid cooler pipes.
5. Insert the transmission fluid cooler pipes into the transmission.
6. Install the bolt securing the transmission fluid cooler pipe retainer to the transmission. Tighten: Tighten the transmission fluid cooler pipe retainer bolt to 25 N.m (18 lb ft).
7. Install the bolt securing the transmission fluid cooler pipes brace to the engine. Install the bolt securing the transmission fluid cooler pipes brace to the engine. Tighten: Tighten the transmission fluid cooler pipes brace bolt to 50 N.m (37 lb ft).
8. Install the wiring harness retainer (2) to the transmission fluid cooler pipes brace (1).
9. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
10. Lower the vehicle.
11. Check the transmission fluid level. Refer to «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
12. Inspect for fluid leaks.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove and discard the oil pressure test plug.

1. Install a NEW 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 Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
3. Lower the vehicle.

1. Remove the Transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

Drive Flange and Seal Replacement

Tools Required

1. J 6125-1B Slide Hammer
2. J 23129 Universal Seal Remover
3. J 29873 Injector Nozzle Socket 30 mm
4. J 44765 Seal Installer
5. J 45012 Holding Fixture
6. J 45019 Universal Puller

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the transmission manual shift shaft nut.
3. Disconnect the shift linkage from the transmission.
4. Place the transmission in neutral by rotating the transmission shift shaft clockwise 2 clicks.
5. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
6. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
7. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission drive flange.
8. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
9. Install J 45012 to the drive flange.
10. While holding J 45012 . Remove the drive flange nut using J 29873 .
11. Remove J 45012 from the drive flange.
12. Remove the drive flange thrust washer (4).
13. Remove the drive flange (2) using J 45019 .
14. Remove the drive flange O-ring seal (3) from the drive flange.
15. Remove the output shaft assembly retainer (1).
16. Use J 6125-1B and J 23129 to remove the transmission case extension seal (1).

1. Using J 44765 install the new transmission case extension seal (1).
2. Install a NEW output shaft assembly retainer (1). Position the retainer on end of the output shaft splines. The retainer will be pushed to the proper depth as the drive flange is installed onto the output shaft.
3. Install a NEW drive flange O-ring seal (3) into the drive flange.
4. Install the drive flange (2) to the transmission output shaft.
5. Install a NEW drive flange thrust washer (4).
6. Apply Loctite 272 (GM P/N 89021297) to the NEW drive flange nut threads.
7. Install the J 45012 to the drive flange.
8. While holding J 45012 Install a NEW drive flange nut using J 29873 . Tighten: Tighten the drive flange nut to 60 N.m (44 lb ft).
9. Remove J 45012 from the drive flange.
10. Remove the mechanics wire (2) securing front propeller shaft (1) to the shift control lever (3).
11. Install the propeller shaft coupler (1) to the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
12. Install the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
13. Place the transmission in the park position by rotating the shift shaft fully counter clockwise.
14. Connect the shift linkage to the transmission.
15. Install the transmission manual shift shaft nut. Tighten: Tighten the transmission manual shift shaft nut to 9 N.m (80 lb in).
16. Check the transmission fluid level. Refer to «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
17. Lower the vehicle.

Transmission Mount Inspection

Note. In order to avoid oil pan damage and possible engine failure, insert a block of wood that spans the width of the oil pan bottom between the oil pan and the jack support.

1. Raise the transmission/transaxle in order to remove the weight from the transmission/transaxle mount and create slight tension in the rubber.
2. Observe the transmission/transaxle mount while raising the transmission/transaxle. Replace the transmission/transaxle mount if the transmission/transaxle mount exhibits any of the following conditions: IMPORTANT: Black paint on the rubber will crack with time, this does no constitute a failure. The hard rubber surface is covered with heat check cracks. The rubber is separated from the metal plate of the transmission/transaxle mount. The rubber is split through the center of the transmission/transaxle mount.
3. If there is movement between the metal plate of the transmission/transaxle mount and its attaching points, lower the transmission/transaxle on the transmission/transaxle mount. Tighten the bolts or nuts attaching the transmission/transaxle mount to the frame or transmission/transaxle mount bracket.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
3. Remove the transmission mount upper mounting bolts.
4. Remove the transmission mount.

1. Install the transmission mount and upper mounting bolts. Tighten: Tighten the mount bolts to 60 N.m (44 lb ft).
2. Install the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
3. Lower the vehicle.

1. Remove the drive flange (2) and seal (3). Refer to «Drive Flange and Seal Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__drive-flange-and-seal-replacement) .
2. Place a suitable jack under the transmission pan in order to support the transmission.
3. Remove the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
4. Place an drain pan under the extension housing.
5. Remove the extension housing bolts (35).
6. The output shaft retainer will slide off the output shaft while removing the case extension housing.
7. Remove the extension housing (27) and the seal (25).

1. Install the output shaft thrust washer to the back side of the case extension housing prior to installing of the case extension housing. Align the thrust washer tabs with the locating slots on the case extension housing.
2. Install the extension housing (27) and the seal (25).
3. Install the extension housing bolts (35). Tighten: Tighten the bolts to 22 N.m (16 lb ft).
4. Install the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
5. Remove the transmission jack.
6. Install the drive flange (2) and seal (3). Refer to «Drive Flange and Seal Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__drive-flange-and-seal-replacement) .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the transmission manual shift shaft nut.
3. Disconnect the shift linkage from the transmission.
4. Place the transmission in neutral by rotating the transmission shift shaft clockwise 2 clicks.
5. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
6. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
7. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission flange.
8. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
9. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
10. Using two equally sized suitable blocks of wood and a suitable transmission jack positioned under the transmission pan area. Support the transmission case on both sides with the wood blocks to prevent the transmission internal components from contacting the transmission jack.
11. Remove the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
12. Remove the extension housing. Refer to «Extension Housing and Seal Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
13. Remove the parking pawl spring.
14. Remove the parking pawl pivot pin.
15. Remove the parking pawl.
16. Inspect the following: Parking pawl tooth for chipping or wear Parking pawl spring for over expansion Pivot pin for scoring, excessive wear

1. Install the parking pawl (3).
2. Install the pivot pin (1).
3. Install the parking pawl spring (2). The straight end of the spring locates against the case and the hooked end locates over the parking pawl.
4. Install the extension housing. Refer to «Extension Housing and Seal Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
5. Install the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
6. Remove the transmission jack.
7. Install the transmission fluid pan. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
8. Remove the mechanics wire (2) securing front propeller shaft (1) to the shift control lever (3).
9. Install the propeller shaft coupler (1) to the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
10. Install the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
11. Place the transmission in the park position by rotating the shift shaft fully counter clockwise.
12. Connect the shift linkage to the transmission.
13. Install the transmission manual shift shaft nut. Tighten: Tighten the transmission manual shift shaft nut to 15 N.m (11 lb ft).
14. Fill the transmission to the proper level. Refer to «Transmission General Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__transmission-general-specifications) , «Fluid Capacity Specifications»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__fluid-capacity-specifications) and «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
15. Lower the vehicle.

J 44767 Seal Installer. See Special Tools and Equipment .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the transmission manual shift shaft nut.
3. Disconnect the shift linkage from the transmission manual shift shaft.
4. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
5. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
6. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission flange.
7. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
8. Using a small screwdriver, remove and discard the shaft seal.
9. Using a small screwdriver, remove and discard the cup plug.
10. Remove the transmission from the vehicle and refer to Unit Repair for replacement of the manual shift shaft ONLY if replacement of the manual shift shaft (3) is necessary.
11. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
12. Disconnect the electrical connector from the manual shift shaft position switch.
13. Using a suitable pin punch (1). Remove the manual shift shaft position switch retaining pin (2).
14. Remove the manual shift shaft detent spring (1) and bolts (2).
15. Position a suitable transmission jack under the transmission support.
16. Remove the transmission support from the body ONLY. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
17. Using the transmission jack, lower the rear of the transmission only enough to allow the manual shift shaft (1) to clear the vehicle floor pan.
18. Extract the manual shift shaft (1) from the transmission case only far enough to allow removal of the manual shift shaft position switch (6).
19. Remove the manual shift shaft position switch (6), the manual shift shaft detent lever (4), the manual shift shaft assembly spacer (3), and the park pawl actuator (2) as an assembly.

1. Install the manual shift shaft position switch (6), the manual shift shaft detent lever (4), the manual shift shaft assembly spacer (3), and the park pawl actuator (2) as an assembly. It may be necessary to push up on the park pawl in order to fully insert the park pawl actuator (2).
2. Fully insert the manual shift shaft (1) into the transmission case.
3. Raise the transmission to its original position.
4. Install the transmission support. Refer to «Transmission Support Replacement»(/cadillac/cts/i-2002-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
5. Remove the transmission jack.
6. Install the manual shift shaft detent spring (1).
7. Install the control valve body bolts (2) retaining the manual shift shaft detent spring. Do not tighten at this time.
8. Confirm that the manual shift shaft detent lever locating pin (2) is properly engaged with the manual valve link (1).
9. Confirm that the detent spring roller (4) is properly engaged with the manual shift shaft switch (3).
10. Using a suitable pin punch (1). Install the manual shift shaft position switch retaining pin (2).
11. Connect the electrical connector to the manual shift shaft position switch.
12. Install a 0.8 mm spacer (2) between the manual shaft detent lever (1) and the manual shaft detent spring (3).
13. Tighten the detent spring bolts. Tighten: Tighten the bolts to 11 N.m (97 lb in).
14. Remove the spacer (2).
15. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
16. If previously removed, install a new shaft seal using J 44767 . See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
17. Position the seal onto the J 44767 before installing the seal into the transmission case. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
18. Carefully slide the seal and tool over the manual shift shaft and Insert the seal into the transmission until fully seated
19. If previously removed, install a new cup plug. Lubricate the cup plug with transmission fluid before installation.
20. Insert the cup plug into the transmission until flush with the transmission case.
21. Remove the mechanics wire (2) securing front propeller shaft (1) to the shift control lever (3).
22. Install the propeller shaft coupler (1) to the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle.
23. Install the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
24. Connect the shift linkage to the transmission manual shift shaft.
25. Install the transmission manual shift shaft nut. Tighten: Tighten the nut to 15 N.m (11 lb ft).
26. Adjust the shift control linkage. Refer to «Shift Control Linkage Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__shift-control-linkage-adjustment) .
27. Lower the vehicle.

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
2. Disconnect the electrical wiring harness connector (1) from the torque converter clutch (TCC) pulse width modulation (PWM) solenoid valve (2).
3. Using a small screwdriver or pick, remove the TCC PWM solenoid valve retainer from the control valve body.
4. Remove the TCC PWM solenoid valve (1) from the control valve body.
5. 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 torque converter clutch (TCC) pulse width modulation (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. Install the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Remove the transmission fluid pan and filter. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-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/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .

1. Unlock the transmission control module electrical connector by pulling the retainer (2) away from the electrical connector (1).
2. Carefully disconnect the electrical connector (1) from the transmission control module.
3. Remove the transmission control module from the mounting bracket by pulling back on the retaining tabs (1) to release the control module.

1. Align the transmission control module with the locating pins (2) on the module mounting bracket.
2. Install the transmission control module by seating it fully into the bracket until all of the retaining tabs (1) have engaged the edge of the module edge.
3. Carefully connect the transmission control module electrical connector (1) to the transmission control module.
4. Lock the transmission control module electrical connector securely to the transmission control module by pushing the retainer (2) toward the electrical connector (1) until fully seated.
5. The transmission control module must be programmed with the proper software/calibrations. Refer to «Transmission Control Module Programming Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .

TCM Programming Procedures

1. The transmission control module (TCM) must be programmed with the proper software/calibrations. Ensure that the following conditions exist in order to prepare for TCM programming: The battery is fully charged. The ignition switch is in the RUN position. The Techline equipment cable connection at the data link connector (DLC) is secure.
2. Program the TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.
3. If the TCM fails to program, proceed as follows: Ensure that the TCM connection is OK. Inspect the Techline equipment for the latest software version. Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.

1. Remove the transmission from the vehicle. Refer to «Transmission Replacement (2.6L and 3.2L)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) and/or «Transmission Replacement (3.6L (LY7))»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
2. Remove the torque converter from the transmission.
3. Remove the input shaft seal.

1. Install the input shaft seal.
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 (2.6L and 3.2L)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) and/or «Transmission Replacement (3.6L (LY7))»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .

Seal Replacement - Torque Converter

Tools Required

1. J 8092 Universal driver Handle
2. J 44766 Seal Installer. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
3. J 45000 Seal Remover

1. Remove the transmission torque converter. Refer to «Torque Converter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
2. Remove and discard the torque converter seal bolts.
3. Remove the torque converter seal using J 45000 .

1. Assemble J 8092 onto J 44766 . See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
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 (31.9 lb in).
5. Install the transmission torque converter. Refer to «Torque Converter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Drain the transmission fluid if disassembly of the transmission is necessary. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
3. Remove the transmission manual shift shaft nut.
4. Disconnect the shift linkage from the transmission.
5. Place the transmission in neutral by rotating the transmission shift shaft clockwise 2 clicks.
6. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
7. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
8. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission flange.
9. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
10. Remove the catalytic converter hanger bracket. Refer to «Catalytic Converter Hanger Bracket Replacement»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
11. Disconnect the transmission wiring harness connector (1) from the transmission by rotating the locking latch (2) counterclockwise.
12. Disconnect the wiring harness clips from the transmission, and position the wiring harness aside.
13. Remove the transmission close out plug.
14. Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.
15. Remove the torque converter bolt close out plug from the engine block by pulling outward.
16. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
17. Repeat the following steps for all 3 torque converter bolts: Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt with the access hole. Remove and discard the torque converter bolt. The bolt is self locking and is NOT reusable.
18. Place an oil drain pan under the transmission fluid cooler pipes.
19. Remove the bolt securing the transmission fluid cooler pipes brace to the engine.
20. Disconnect the fluid cooler pipes from the transmission.
21. Plug the open outlet ports to prevent fluid loss and contamination.
22. Position a suitable transmission jack under the transmission.
23. Remove the transmission mount. Refer to «Transmission Mount Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
24. Remove the 3 lower transmission mounting bolts (1-2).
25. Lower the rear of the transmission only enough to gain access to the remaining 3 upper transmission mounting bolts.
26. Disconnect the engine wiring harness retaining clips (1) from the transmission mounting bolts.
27. Remove the 3 upper transmission mounting bolts (2-3).
28. Pull the transmission free from the engine dowels (1).
29. Carefully lower the transmission from the vehicle.
30. Flush the transmission oil cooler. Refer to «Automatic Transmission Oil Cooler Flushing and Flow Test (J45096)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting__automatic-transmission-oil-cooler-flushing-and) or «Automatic Transmission Oil Cooler Flushing and Flow Test (J35944 A)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting__automatic-transmission-oil-cooler-flushing-and) .

1. Using the transmission jack, carefully raise the transmission to the vehicle.
2. Align the engine dowels (1) with the transmission.
3. Install the 3 lower transmission mounting bolts (1-2). Tighten: Tighten the transmission mounting bolts (2) to 75 N.m (55 lb ft). Tighten the transmission mounting bolt (1) to 50 N.m (37 lb ft).
4. Lower the rear of the transmission only enough to gain access to the remaining 3 upper transmission mounting bolts.
5. Install the 3 upper transmission mounting bolts (2-3). Tighten: Tighten the transmission mounting bolts to 75 N.m (55 lb ft).
6. Connect the engine wiring harness retaining clips (1) to the transmission mounting bolts.
7. Install the transmission mount. Refer to «Transmission Mount Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
8. Remove transmission jack from under the transmission.
9. Lubricate the O-rings with automatic transmission fluid.
10. Install the O-rings onto the cooler pipes prior to inserting the cooler pipes into the transmission.
11. Insert the transmission fluid cooler pipes into the transmission.
12. Install the bolt securing the transmission fluid cooler pipe retainer to the transmission. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
13. Install the bolt securing the transmission fluid cooler pipes brace to the engine. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
14. Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
15. Repeat the following steps for all 3 torque converter bolts: Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt holes in the flexplate/flywheel with the access hole in the engine block. To aid in alignment of the torque converter to the flexplate/flywheel. Install all 3 NEW torque converter bolts before fully tightening. Tighten: Tighten the torque converter bolts to 63 N.m (46 lb ft).
16. Press the torque converter bolt close out plug into the engine block.
17. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
18. Install the transmission close out plug.
19. Connect the wiring harness clips to the transmission.
20. Connect the transmission wiring harness connector (1) to the transmission by rotating the locking latch (2) clockwise.
21. Install the catalytic converter hanger bracket. Refer to «Catalytic Converter Hanger Bracket Replacement»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
22. Remove the mechanics wire (2) securing front propeller shaft (1) to the shift control lever (3).
23. Install the propeller shaft coupler (1) to the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
24. Place the transmission in the park position by rotating the shift shaft fully counter clockwise.
25. Connect the shift linkage to the transmission.
26. Install the transmission manual shift shaft nut. Tighten: Tighten the transmission manual shift shaft nut to 15 N.m (11 lb ft).
27. Install the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
28. Check the transmission fluid level (fill if necessary). Refer to «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
29. Adjust the shift control linkage. Refer to «Shift Control Linkage Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__shift-control-linkage-adjustment) .
30. Lower the vehicle.
31. The transmission control module must be programmed with the proper software/calibrations. Refer to «Transmission Control Module Programming Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .

Transmission Final Test and Inspection

Complete the following procedure after the transmission is installed in the vehicle

1. With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
2. Start the engine and listen for abnormal conditions.
3. While the engine continues to idle raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
4. Inspect for fluid leaks while the engine is idling.
5. Lower the vehicle.
6. Perform a final inspection for the proper fluid level.
7. Road test the vehicle.

1. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Remove the thermostat housing to gain access to the upper transmission mounting bolts. Refer to «Thermostat Housing Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) , «Thermostat Housing Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) or «Thermostat Housing Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
4. Drain the transmission fluid if disassembly of the transmission is necessary. Refer to «Automatic Transmission Fluid/Filter Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__automatic-transmission-fluidfilter-replacement) .
5. Remove the transmission manual shift shaft nut.
6. Disconnect the shift linkage from the transmission.
7. Place the transmission in neutral by rotating the transmission shift shaft clockwise 2 clicks.
8. Remove the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
9. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
10. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission flange.
11. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
12. Disconnect the transmission wiring harness connector (1) from the transmission by rotating the locking latch (2) counterclockwise.
13. Disconnect the wiring harness clips from the transmission, and position the wiring harness aside.
14. Remove the starter motor to gain access to the torque converter bolts. Refer to «Starter Motor Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) , «Starter Motor Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) or «Starter Motor Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
15. Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.
16. Remove the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
17. Repeat the following steps for all 3 torque converter bolts: Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt with the starter motor opening in the engine block. Remove and discard the torque converter bolt. The bolt is self locking and is NOT reusable.
18. Place an oil drain pan under the transmission fluid cooler pipes.
19. Remove the bolt securing the transmission fluid cooler pipes brace to the engine.
20. Disconnect the fluid cooler pipes from the transmission.
21. Plug the open outlet ports to prevent fluid loss and contamination.
22. Position a suitable transmission jack under the transmission.
23. Remove the transmission mount. Refer to «Transmission Mount Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
24. Remove the 3 lower transmission mounting bolts (1-2).
25. Support the engine with a suitable jack. Loosen the two rear cradle bolts approximately one inch. Lower the engine and transmission just enough to gain access to the remaining 3 upper transmission mounting bolts.
26. Disconnect the engine wiring harness retaining clips (1) from the transmission mounting bolts.
27. Remove the 3 upper transmission mounting bolts (2-3).
28. Pull the transmission free from the engine dowels (1).
29. Carefully lower the transmission from the vehicle.
30. Flush the transmission oil cooler. Refer to «Automatic Transmission Oil Cooler Flushing and Flow Test (J45096)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting__automatic-transmission-oil-cooler-flushing-and) or «Automatic Transmission Oil Cooler Flushing and Flow Test (J35944 A)»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting__automatic-transmission-oil-cooler-flushing-and) .
31. If the transmission is being replaced, remove the drive flange and install it on the replacement unit. Refer to «Drive Flange and Seal Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__drive-flange-and-seal-replacement) .

1. Using the transmission jack, carefully raise the transmission to the vehicle.
2. Align the engine dowels (1) with the transmission.
3. Install the 3 lower transmission mounting bolts (1-2). Tighten: Tighten the transmission mounting bolts (2) to 75 N.m (55 lb ft). Tighten the transmission mounting bolt (1) to 50 N.m (37 lb ft).
4. Lower the engine and transmission only enough to gain access to the remaining 3 upper transmission mounting bolts.
5. Install the 3 upper transmission mounting bolts (2-3). Tighten: Tighten the transmission mounting bolts to 75 N.m (55 lb ft).
6. Raise the engine and tighten the rear cradle bolts. Tighten: Tighten the rear cradle mounting bolts to 191 N.m (141 lb ft).
7. Connect the engine wiring harness retaining clips (1) to the transmission mounting bolts.
8. Install the transmission mount. Refer to «Transmission Mount Replacement»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .
9. Remove transmission jack from under the transmission.
10. Lubricate the O-rings with automatic transmission fluid.
11. Install the O-rings onto the cooler pipes prior to inserting the cooler pipes into the transmission.
12. Insert the transmission fluid cooler pipes into the transmission.
13. Install the bolt securing the transmission fluid cooler pipe retainer to the transmission. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
14. Install the bolt securing the transmission fluid cooler pipes brace to the engine. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
15. Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
16. Repeat the following steps for all 3 torque converter bolts: Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt holes in the flexplate/flywheel with the starter motor opening in the engine block. To aid in alignment of the torque converter to the flexplate/flywheel. Install all 3 NEW torque converter bolts before fully tightening. Tighten: Tighten the torque converter bolts to 63 N.m (46 lb ft).
17. Install the starter motor. Refer to «Starter Motor Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) , «Starter Motor Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) or «Starter Motor Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
18. Install the front air deflector. Refer to «Air Deflector Replacement - Front»(/cadillac/cts/i-2002-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
19. Connect the wiring harness clips to the transmission.
20. Connect the transmission wiring harness connector (1) to the transmission by rotating the locking latch (2) clockwise.
21. Remove the mechanics wire (2) securing front propeller shaft (1) to the shift control lever (3).
22. Install the propeller shaft coupler (1) to the transmission flange. Refer to «Propeller Shaft Replacement (Automatic Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) , «Propeller Shaft Replacement (Manual Transmission)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) or «Propeller Shaft Replacement (CTS-V)»(/cadillac/cts/i-2002-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Propeller Shaft.
23. Place the transmission in the park position by rotating the shift shaft fully counter clockwise.
24. Connect the shift linkage to the transmission.
25. Install the transmission manual shift shaft nut. Tighten: Tighten the transmission manual shift shaft nut to 15 N.m (11 lb ft).
26. Install the exhaust system. Refer to «Exhaust System Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-la3-ly9) , «Exhaust System Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system) or «Exhaust System Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/exhaust/#engine-exhaust-system__exhaust-system-replacement-ls6) in Engine Exhaust.
27. Check the transmission fluid level (fill if necessary). Refer to «Transmission Fluid Checking Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-troubleshooting) .
28. Adjust the shift control linkage. Refer to «Shift Control Linkage Adjustment»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement__shift-control-linkage-adjustment) .
29. Lower the vehicle.
30. Install the thermostat housing. Refer to «Thermostat Housing Replacement (LA3, LY9)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) , «Thermostat Housing Replacement (LY7)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) or «Thermostat Housing Replacement (LS6)»(/cadillac/cts/i-2002-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
31. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure»(/cadillac/cts/i-2002-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
32. The transmission control module must be programmed with the proper software/calibrations. Refer to «Transmission Control Module Programming Procedure»(/cadillac/cts/i-2002-2007/remont/automatic-trans/#automatic-transmission-5l40-e-introduction-service-replacement) .

Complete the following procedure after the transmission is installed in the vehicle

1. With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
2. Start the engine and listen for abnormal conditions.
3. While the engine continues to idle raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/cts/i-2002-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
4. Inspect for fluid leaks while the engine is idling.
5. Lower the vehicle.
6. Perform a final inspection for the proper fluid level.
7. Road test the vehicle.

Scheme 27

Transmission General Description

The Hydra-matic 5L40-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-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 sungear 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-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 5L40-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 5L40-E transmission uses the adapt function for garage shifts, upshifts, and TCC application. The 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.

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 28

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 5L40-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. Kick-down 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 29

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 30

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 31

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 32

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 (TFT) 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 33

The Hydra-matic 5L40-E uses three electromagnetic shift solenoid valves 1-2, 2-3 and 4-5 to control upshifts and downsifts 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 34

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 ohms when measured at 20°C (68°F). The resistance should measure approximately 16 ohms at 150°C (300°F).

Scheme 35

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 36

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.

Economy Mode Operation

During economy mode operation, drivers may notice increased powertrain braking after releasing the accelerator pedal. The vehicle will not coast freely when the accelerator pedal is released, but will start to gradually slow down as if the brakes were lightly applied. This feels very similar to what is experienced when releasing the accelerator pedal on a vehicle equipped with a manual transmission.

Sport Mode Operation

The sport mode was designed to simulate the performance driving of a manual transmission equipped vehicle. This means that, given certain driving conditions, the vehicle will maintain specific gears longer than a traditional automatic transmission would. In addition, if a person is driving in the normal mode in fifth gear, depressing the sport button will cause an immediate 5-4 downshift that will be maintained for ten seconds. If the transmission is in any other gear when sport is engaged, no downshift will take place. No attempt should be made to change or alter these operating characteristics.

Winter Mode Operation

The winter mode enables the transmission to start the vehicle moving in third gear. Third gear take-off reduces the torque applied to the rear wheels, which reduces wheel spin during slippery conditions.

To activate the winter mode, press the winter mode switch located next to the transmission gear selector lever. The snowflake icon will illuminate brightly.

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 J 8092 Universal Driver Handle J 21867 Pressure Gage J 21867-L40 Pressure Gage Adapter J 23129 Universal Seal Remover J 29873 Injector Nozzle Socket 30 mm J 35616-B GM Terminal Test Kit J 35944-A Transmission Oil Cooler and Line Flusher J 35944-22 Transmission Oil Cooler Flushing Fluid J 36797 Getrag Axle Output Shaft Seal Installer J 36850 Transjel Lubricant J 42066 Rear Hub Holding Tool J 44246 Solenoid Testing Kit J 44765 Seal Installer J 44766 Seal Installer J 44767 Seal Installer J 44827 Transmission Cooler Quick Disconnect J 45000 Seal Remover J 45012 Holding Fixture J 45019 Universal Puller J 45096 Transmission Oil Cooling System Flush and Flow Test Tool J 45681 Jumper Harness J 45806 Cooler Flushing Adapter

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

See also:
• Lifting and Jacking the Vehicle
• Console Replacement - Front Floor
• Fastener Notice
• Air Deflector Replacement - Front
• Component Fastener Tightening Notice
• Transmission Fluid Checking Procedure
• Exhaust System Replacement (LA3, LY9)
• Exhaust System Replacement (LY7)
• Exhaust System Replacement (LS6)
• Propeller Shaft Replacement (Automatic Transmission)
• Transmission Support Replacement
• Automatic Transmission Oil Cooler Flushing and Flow Test (J45096)
• Battery Negative Cable Disconnect/Connect Procedure
• Thermostat Housing Replacement (LA3, LY9)
• Indicator/Warning Message Description and Operation
• Transmission Fluid Temperature (TFT) Sensor Specifications
• Floor Shift Control Boot Replacement
• Shift Control Linkage Adjustment
• Torque Converter Clutch/Cruise Control Release Switch Adjustment
• Transmission General Specifications
• Fluid Capacity Specifications
• Automatic Transmission Fluid/Filter Replacement
• Drive Flange and Seal Replacement
• Shift Solenoid Valve State and Gear Ratio