Transmission Replacement
Transmission Replacement - 4WD^ Tools Required
- J 37761 Clutch Alignment Arbor
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable (1).
2. Remove the center console from the vehicle.
3. Remove the shift lever knob from the lever.
Important: To ease the removal of the shifter boot, push the boot down slightly to expose the inner shaft then lube the shaft and boot with Synthetic Multipurpose Lubricant GM P/N 12346241 (Canadian P/N 10953474) or equivalent.
4. Remove the shifter boot from the shift lever.
5. Remove the gearshift control lever from the gearshift lever case.
6. Remove the transfer case selector lever knob retaining screw and knob from the lever.
7. Remove the transfer case lever.
8. Raise and support the vehicle. Refer to Vehicle Lifting.
9. Remove the transfer case.
10. Disconnect the Vehicle Speed Sensor (VSS) switch electrical connector.
11. Loosen the wire harness retainer on the right side of the transmission, then position harness out of the way.
12. Remove the engine exhaust support from the transmission.
13. Place a drain pan or a suitable container under the transmission tail housing.
14. Remove the 2 bolts from the flywheel inspection cover, then remove the cover from the transmission.
15. Remove the 2 hydraulic slave cylinder retaining bolts from the transmission, then position the slave cylinder aside.
16. Remove the 2 bolts from the rear transmission mount.
17. Support the transmission with a suitable hydraulic jack.
18. Support the front of the engine assembly with a suitable jack and a block of wood.
19. Remove the transmission crossmember from the vehicle
20. Remove the 2 right side transmission to engine bolts.
21. Position the transmission ground strap aside.
22. Remove the right upper transmission to engine bolt.
23. Remove the crossmember ground strap retaining bolt, then position ground strap aside.
24. Remove the upper left transmission retaining nut.
25. Remove the 2 lower transmission retaining nuts.
26. Remove the drain pan from under the vehicle.
Important: Slightly lower the transmission to gain access to the backup lamp switch connector and breather tube.
27. Disconnect the backup light switch connector from the switch. Disconnect the breather hose from the transmission. Remove the transmission from the vehicle by carefully moving the transmission away from the engine toward the rear of the vehicle until the input shaft is clear of the clutch pressure plate cover. Then slowly lower the transmission jack making sure there are no obstructions.
28. Inspect the transmission.
Installation Procedure
1. Inspect the clutch alignment by inserting the J 37761 through the clutch disc and into the crankshaft pilot bearing. If the J 37761 does not fit through the clutch disc and into the pilot bearing assembly smoothly, the clutch disc may be misaligned. For clutch disassembly and inspection procedures, refer to Clutch Assembly Replacement.
Important: Raise the transmission to a position where the backup light switch connector can be connected and the breather tube can be installed before installing the transmission to the engine assembly.
2. Install the transmission to the engine by raising the transmission into position and moving the transmission toward the engine while simultaneously inserting the transmission input shaft through the pressure plate cover and 3the clutch disc into the crankshaft pilot bearing.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the 2 lower transmission-to-engine nuts onto the transmission alignment studs.
^ Tighten the 2 lower transmission-to-engine nuts to 100 Nm (72 ft. lbs.).
4. Install the 1 top left transmission-to-engine nut onto the transmission alignment stud.
^ Tighten the transmission-to-engine nut to 100 Nm (72 ft. lbs.).
5. Install the top right transmission-to-engine bolt into the transmission.
^ Tighten the top right transmission-to-engine bolt to 100 Nm (72 ft. lbs.).
6. Install the upper right transmission-to-engine bolt into the transmission with the ground strap.
^ Tighten the transmission-to-engine bolt to 100 Nm (72 ft. lbs.).
7. Install the lower right transmission-to-engine bolt into the transmission.
^ Tighten the transmission-to-engine bolt to 100 Nm (72 ft. lbs.).
8. Install the 2 bolts into the flywheel inspection cover.
^ Tighten the flywheel inspection cover bolts to 10 Nm (89 inch lbs.).
9. Install the exhaust support bracket to the transmission and exhaust pipe.
^ Tighten the support bracket nut and bolt to 20 Nm (15 ft. lbs.).
10. Install the clutch slave cylinder to the transmission.
11. Install the 2 slave cylinder retaining bolts.
^ Tighten the 2 slave cylinder bolts to 37 Nm (28 ft. lbs.).
12. Install the transfer case.
13. Install the 2 bolts into the rear transmission mount.
^ Tighten the rear transmission mount bolts to 60 Nm (44 ft. lbs.).
14. Remove the hydraulic jack from the transmission.
15. Remove the jack stand from the front of the engine.
16. Connect the vehicle speed sensor (2).
17. Install the crossmember ground strap and bolt.
^ Tighten the bolt to 10 Nm (89 inch lbs.).
18. Position the wire harness into the right transmission harness retainer.
19. Inspect the transmission fluid.
20. Lower the vehicle.
21. Install the gearshift control lever into the gearshift lever case.
Important: To ease the installation of the shifter boot, lube the shaft and boot with Synthetic Multipurpose Lubricant GM P/N 12346241 (Canadian P/N 10953474) or equivalent.
22. Install the shifter boot on the shift lever.
23. Install the transfer case lever.
24. Install the center console in the vehicle.
Caution: Refer to Battery Disconnect Caution in Service Precautions.
25. Connect the negative battery cable.