GM Service Manual Online
For 1990-2009 cars

Installation Procedure

For gear shift lever case components, refer to

Gearshift Lever Case Components (Four-Wheel Drive Models)


Object Number: 168628  Size: LF
(781)Gearshift Lever Case
(782)Gearshift Shaft
(785)Reverse Gearshift Limit Yoke
(786)Gearshift Lever
(787)Gearshift Arm
(788)Gearshift Limit Spring
(792)Reverse Gearshift Limit Bolt
(793)Gearshift Lever Case Seat
(794)Lever Locating Bolt
(795)Select Guide Pin
(795)Select Guide Pin
(796)Select Return Spring
(796)Select Return Spring
(797)Select Return Spring Bolt
(797)Select Return Spring Bolt
(798)Gearshift Lever Case Plug
(799)Roll Pin
(799)Roll Pin
(799)Roll Pin
(799)Roll Pin
(7020)Gearshift Control Lever Bushing
(7023)Gearshift Lever Case Plate
(7024)Gearshift Lever Case Plate Screw
.


    Object Number: 168260  Size: SH
  1. Apply the GM P/N 12346240, or equivalent, to the extension case gearshift lever case mating surface.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the gearshift lever case (1) to extension case (2) with ten bolts.
  4. Tighten
    Tighten the gearshift lever case bolts to 17 N·m (12 lb ft).

  5. Install the breather hose to the gearshift lever case by securing with one clamp.

  6. Object Number: 189859  Size: SH
  7. Raise the transmission slowly until the engine is no longer in contact with the wood block between the bulkhead (2) and the distributor gear housing.
  8. Remove the wood block.
  9. Install the rear transmission crossmember onto the vehicle by securing with four bolts.
  10. Tighten
    Tighten the rear transmission crossmember bolts to 60 N·m (44 lb ft).


    Object Number: 168170  Size: SH
  11. Install the two bolts (2) to the rear transmission mount (1).
  12. Tighten
    Tighten the rear transmission mount bolts to 60 N·m (44 lb ft).

  13. Remove the hydraulic jack from underneath the transmission.
  14. Install the Three-Way Catalytic Converter (TWC) and the muffler/tail pipe assembly to the vehicle.
  15. Remove the speedometer driven gear case retaining bolt.

  16. Object Number: 168258  Size: SH
  17. Install the ground wire (1) to the speedometer driven gear case by securing with one bolt.
  18. Tighten
    Tighten the speedometer driven gear case retaining bolt (2) to 12 N·m (106 lb in).


    Object Number: 168258  Size: SH
  19. Install the speedometer cable (3) to speedometer driven gear case.
  20. Install the rear propeller shaft into the vehicle aligning the index marks made during removal by securing with four bolts and four nuts.
  21. Tighten
    Tighten propeller shaft bolts and nuts to 50 N·m (37 lb ft).

  22. Apply the GM P/N 12346004, or equivalent, to the threaded portion of the transmission drain plug.

  23. Object Number: 168118  Size: SH
  24. Install the transmission drain plug (1) into the transmission.
  25. Tighten
    Tighten the transmission drain plug (1) to 28 N·m (20 lb ft).

  26. Add approximately 1.5 liters (1.6 quarts) of synthetic 75W-90 GL4 lubricant, or equivalent, into the transmission oil level/filler plug hole. The oil level should be even with the bottom of the transmission oil level/filler plug hole.
  27. Apply GM P/N 12346004, or equivalent, to the threaded portion of the transmission oil level/filler plug (2).

  28. Object Number: 168118  Size: SH
  29. Install the transmission oil level/filler plug (3) into the transmission.
  30. Tighten
    Tighten the oil level/filler plug (3) to 28 N·m (20 lb ft).

  31. Lower the vehicle.
  32. Install the four bolts to the fan shroud at the radiator.
  33. Tighten
    Tighten the fan shroud bolts to 10 N·m (89 lb in).

  34. Install the gearshift control lever to the gearshift lever case. Refer to Gearshift Control Lever Installation .