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Home >> GMC Truck >> 2013 >> Sierra Denali AWD V8-6.2L >> Repair and Diagnosis >> Transmission and Drivetrain >> Manual Transmission/Transaxle >> Service and Repair >> Removal and Replacement >> Tremec 5-Speed (TZ0) - Manual Transmission >> Transmission Replacement

Transmission Replacement




Transmission Replacement

Special Tools

J 42371 Hydraulic Clutch Line Separator

Removal Procedure




1. Shift the transmission into 3rd or 4th gear.

2. Remove the shift lever assembly. Refer to Transmission Control Replacement Transmission Control Replacement.

3. Remove the propeller shaft. Refer to One-Piece Propeller Shaft Replacement One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement Two-Piece Propeller Shaft Replacement.

4. Using J 42371 , push back on the white plastic sleeve on the quick connect in order to separate the hydraulic clutch line from the clutch actuator quick connect.




5. Disconnect the following engine wiring harness electrical connectors:

* Vehicle speed sensor (VSS) (1)

* Backup lamp switch (3)

* Oxygen sensor (4)

6. Remove the engine harness clips from the fuel feed/return line clips and transmission.

7. Remove the starter motor. Refer to Starter Replacement (Diesel) Service and RepairStarter Replacement (V6) Service and RepairStarter Replacement (V8) Service and Repair.

8. Support the transmission using a suitable transmission jack.

9. Remove the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (4WD 2500/3500 Series) Transmission Support Crossmember Replacement (4WD 1500 Series) Transmission Support Crossmember Replacement (2WD 1500 Series) Transmission Support Crossmember Replacement (2WD 2500/3500 Series) .




10. Remove the bolts (1, 2) securing the bottom right side of the transmission to the engine.

11. Remove the transmission cover.




12. Remove the stud securing the right side of the transmission to the engine.




13. Remove the bolt and studs securing the transmission to the engine.

14. Pull the transmission straight back off the clutch hub splines. Do not let the transmission hang from the clutch assembly.

15. Remove the transmission from the vehicle.

Installation Procedure

Warning

Use care when cleaning the clutch hub. The clutch hub may have sharp edges and can cause personal injury if contact is made. Wear protective gloves to avoid personal injury.

1. Clean the clutch hub and the input shaft from any debris and contaminates with a lint-free towel.





Caution:
Applying too much or the wrong type of grease on the transmission input shaft may cause damage, clutch slippage or failure. Always apply the correct type of grease. Never apply more grease than is necessary to coat the transmission input shaft with a very thin film of grease.

2. Use a clean flat brush (1) to apply very light coating of multi-purpose grease to input shaft until the metal is only shiny. No visible clumps of grease are permissible regardless of size. Smear away from the transmission in direction of the shown arrow.





Caution:
Ensure that no grease remains on the lead surface of the transmission input shaft. Clean the lead surface of the transmission input shaft prior to the assembly of the transmission to the engine. Failure to maintain a clean surface may cause clutch slippage or failure.

3. Clean the entire lead surface of the input shaft with a NEW, lint-free towel (1).





Caution: Refer to Fastener Caution Fastener Caution.

4. Install the transmission to the vehicle:

1. Ensure the transmission is positioned in the 3rd or 4th gear.

2. Rotate the transmission clockwise onto the clutch hub splines.

3. Install the bolt and studs securing the transmission to the engine.

Tighten the bolt/studs to 50 Nm (37 lb ft).




5. Install the stud securing the right side of the transmission to the engine.

Tighten the stud to 50 Nm (37 lb ft).




6. Install the transmission cover.

7. Install the bolts (1 2) securing the bottom right side of the transmission to the engine.

Tighten the bolts to 50 Nm (37 lb ft).

8. Install the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (4WD 2500/3500 Series) Transmission Support Crossmember Replacement (4WD 1500 Series) Transmission Support Crossmember Replacement (2WD 1500 Series) Transmission Support Crossmember Replacement (2WD 2500/3500 Series) .

9. Remove the transmission jack.

10. Install the starter motor. Refer to Starter Replacement (Diesel) Service and RepairStarter Replacement (V6) Service and RepairStarter Replacement (V8) Service and Repair.




11. Install the engine harness clips to the fuel feed/return line clips and transmission.

12. Connect the following engine harness electrical connectors:

* VSS (1)

* Backup lamp switch (3)

* Oxygen sensor (4)





Note: DO NOT rely on an audible click or a visual verification on the clutch hydraulic hose quick connect fitting connection.

13. Connect the clutch actuator cylinder hose to the clutch master cylinder hose.

14. Push together the clutch hydraulic hose quick connect fittings, then pull back on the fittings to verify engagement.

15. Check the clutch hydraulic hoses for kinks or twists.

16. Install the propeller shaft. Refer to One-Piece Propeller Shaft Replacement One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement Two-Piece Propeller Shaft Replacement.

17. Fill the transmission with fluid.

18. Install the shift lever assembly. Refer to Transmission Control Replacement Transmission Control Replacement.

19. Bleed the clutch hydraulic system. Refer to Hydraulic Clutch System Bleeding Service and Repair.

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