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Home >> GMC Truck >> 1998 >> C 2500 Suburban 2WD V8-6.5L DSL Turbo VIN F >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Service and Repair >> Removal and Replacement >> 4L60-E Automatic Transmission

4L60-E Automatic Transmission

REMOVAL PROCEDURE

- Tools Required
- J21366 Converter Holding Strap

1. Disconnect the battery negative cable.

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

2. Raise the vehicle. Support the vehicle. Refer to Vehicle Lift Points.
3. Disconnect the range selector cable from the transmission bracket and from the transmission range select lever. Refer to Shift Cable Replacement
4. Remove the rear propeller shaft. Refer to Rear Propeller Shaft in Propeller Shaft.
5. Support the transmission with a transmission jack.
6. Remove the transfer case if equipped. Refer to the appropriate Transfer Case Replacement in Transfer Case:
- Transfer Case Replacement (Selectable Four Wheel Drive).
- Transfer Case Replacement (Auto Four Wheel Drive ).
- Transfer Case Replacement (Manual Four Wheel Drive).





7. Gasoline Engine-Remove the following components:
7.1. Two bolts
7.2. Two washers
7.3. One nut
7.4. The transmission to engine brace





8. Diesel Engine-Remove the following components:
8.1. Two bolts
8.2. Two washers
8.3. One nut
8.4. The transmission to engine brace

9. Remove the transmission rear mount.
10. Remove the frame crossmember.
11. Remove the exhaust pipe from the exhaust manifolds. Remove the muffler assembly from the exhaust pipe, if required. Refer to Exhaust System.





12. For the 5.0L Gasoline Engine: Remove the six bolts securing the converter cover to the transmission.
13. Remove the starter. Refer to Starter Motor Replacement (Gasoline Engines) in Starting and Charging.
14. For the 4.3L Gasoline Engine: Remove the dust plug at the end of the starter mounting port in order to gain access to the converter bolts.





15. For the Diesel Engine and 7.4L/5.7L Engines: Remove the four bolts securing the converter cover to the transmission.
16. Mark the flywheel and the torque converter alignment.





17. Remove the bolts that attach the torque converter to the engine flywheel.





18. Remove the transmission vent hose.
19. Disconnect the wiring harness connectors from the vehicle speed sensors and from the park neutral position switch.
20. Remove all vehicle electrical harness wires, harness clips, tubes, and brackets that may interfere with the removal of the transmission.
21. Remove the fluid fill tube and the fill tube seal from the transmission. Refer to Filler Tube Replacement.
22. Plug the fluid fill tube opening in the transmission.
23. Disconnect the transmission oil cooler pipes from the transmission. Refer to the oil cooler pipe quick connect fittings removal procedure in Oil Cooler Line Replacement.
24. Plug the transmission oil cooler pipe connectors in the transmission case.
25. Install the J21366 in order to keep the torque converter from sliding off of the transmission turbine shaft.
26. Support the engine with a suitable jack stand before removing the transmission from the engine.





27. 5.0L and 5.7L Gasoline Engine: Remove the studs and bolts securing the transmission to the engine.





28. 4.3L Gasoline Engine: Remove the studs and bolts securing the transmission to the engine.
29. Pull the transmission straight back from the engine.
30. Lower the transmission using the transmission jack.
31. Flush the transmission oil cooler and the pipes whenever you remove the transmission for overhaul, or replacement of the torque converter, the pump, or the transmission case. Refer to AT Oil Cooler Flushing.
32. Clean the transmission case using a solvent dampened cloth. Do not allow solvent to enter the transmission.
33. Air dry the transmission.
34. Clean all hardware and the flywheel cover using solvent. Air dry all the parts.
35. Inspect all the components for wear and damage.
36. Inspect all the seals and the fittings for signs of wear.
37. Inspect the torque converter for stripped or broken weld nuts.
38. Inspect the transmission case for cracks.

INSTALLATION PROCEDURE

- Tools Required
- J21366 Converter Holding Strap

IMPORTANT:
- The torque converter and the flywheel must be aligned and must rotate freely.
- Install the brackets, the clips, and the harnesses to the original locations.
- Install the oil level indicator tube after installing the transmission.

1. Install the J21366 in order to keep the torque converter from sliding off of the transmission turbine shaft.
2. Raise the transmission into place and remove the J21366.
3. Support the transmission with a transmission jack.
4. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter.





5. 5.0L and 5.7L Gasoline Engine: Install the studs and the bolts securing the transmission to the engine.
- Tighten the studs and the bolts to 47 Nm (34 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.





6. 4.3L Gasoline Engine: Install the studs and the bolts securing the transmission to the engine.
- Tighten the studs and the bolts to 47 Nm (34 ft. lbs.).





7. Install the transmission vent hose.
8. Connect the wiring harness connectors to the vehicle speed sensors and to the park neutral position switch.
9. Install all vehicle electrical harness wires, harness clips, tubes, and brackets removed before transmission removal.
10. Remove the two plugs from the transmission case cooler pipe connectors.
11. Install the transmission cooler pipes. Refer to the oil cooler quick connect fitting installation procedure in Oil Cooler Line Replacement.
12. Install the transmission fluid fill tube and the fill tube sea[. Refer to Filler Tube Replacement.





13. Install the three bolts securing the torque converter to the engine flywheel.
13.1. Tighten the bolts finger tight to insure proper converter seating.
13.2. Tighten the bolts to 63 Nm (46 ft. lbs.).





14. 7.4L and 5.7L Gasoline Engine: Install the bolts securing the converter cover to the transmission.
- Tighten the converter cover bolts to 10 Nm (89 inch lbs.).

15. 5.0L Gasoline Engine: Install the bolts securing the converter cover to the transmission.





16. Gasoline Engine: Install the converter cover plug in the starter mounting port.
- Tighten the converter cover bolts to 33 Nm (24 ft. lbs.).

17. Install the exhaust pipe from the exhaust manifolds and the muffler assembly from the exhaust pipe if required. Refer to Engine Mechanical.
18. Install the frame crossmember.
19. Install the rear transmission mount.





20. Gasoline Engine-Install the following parts:
20.1. The transmission to engine brace
20.2. Two bolts
20.3. Two washers
20.4. One nut
^ Tighten the bolts to 55 Nm (41 ft. lbs.).





21. Diesel Engine-Install the following parts:
21.1. The transmission to engine brace
21.2. Two bolts
21.3. Two washers
21.4. One nut
^ Tighten the bolts to 70 Nm (51 ft. lbs.).

22. Install the transfer case to the transmission if removed. Refer to Transfer Case Replacement in Transfer Case.
23. Remove the transmission jack and the engine support stands.
24. Install the rear propeller shaft. Refer to Rear propeller Shaft in Propeller Shaft.
25. Install the transmission range select cable to the transmission range select lever and the transmission bracket. Refer to Shift Cable Replacement.
26. Remove the safety stands.
27. Lower the vehicle.
28. Fill the transmission with new transmission fluid.
29. Connect the battery negative cable.
- Tighten the terminal bolt to 15 Nm (11 ft. lbs.).

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