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.
- Install the following
items into the extension case:
• | Two select guide pins (3). |
• | Two select return springs (2). |
• | Two select return spring bolts (1). |
Tighten
Tighten the return spring bolts to 20 N·m (15 lb ft).
- Apply GM P/N 12346240 or equivalent to the transmission extension
case mating surface.
- Install the extension case (4) to the transmission; secure with
twelve bolts.
Tighten
Tighten the extension case bolts to 28 N·m (20 lb ft).
- Apply the GM P/N 12346240, or equivalent to the extension case
gearshift lever case mating surface.
- Install the gearshift lever case to the extension case; secure
with ten bolts.
Tighten
Tighten the gearshift lever case bolts to 17 N·m (12 lb ft).
- Install the breather hose to the gearshift lever case; secure
with one clamp.
- 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.
- Remove the wood block.
- Install the rear transmission mount to the extension case; secure
with one bolt.
Tighten
Tighten the rear transmission mount bolt to 60 N·m (44 lb ft).
- Install the rear transmission crossmember to the vehicle; secure
with four bolts.
Tighten
Tighten the rear transmission crossmember bolts to 60 N·m
(44 lb ft).
- Install the two bolts
to the rear transmission mount (2).
Tighten
Tighten the rear transmission mount bolts to 60 N·m (44 lb ft).
- Remove the hydraulic jack from underneath the transmission.
- Install the Three Way Catalytic Converter (TWC) and the muffler/tail
assembly to the vehicle.
- Install the speedometer
driven gear case and the ground wire (1) to the extension case (4); secure
with one bolt (2).
Tighten
Tighten the speedometer driven gear case retaining bolt to 12 N·m
(106 lb in).
- Install the speedometer cable (3) to the speedometer driven gear
case.
- Install the rear propeller shaft into the vehicle aligning the
index marks made during the removal procedure; secure with four bolts and
four nuts.
Tighten
Tighten the rear propeller shaft bolts and the nuts to 50 N·m
(37 lb ft).
- Apply the GM P/N 12346005, or equivalent, to the threaded portion
of the transmission drain plug.
- Install the transmission
drain plug (3) into the transmission.
Tighten
Tighten the transmission drain plug to 28 N·m (20 lb ft).
- Add approximately 1.5 liters (1.6 quarts) of synthetic
75W-90 GL4 lubricant, or equivalent into the transmission oil level/filler
plug (2). Oil level should be even with the bottom of the transmission oil
level/filler plug (2) hole.
- Apply GM P/N 12346004, or equivalent, to the threaded portion
of the transmission oil level/filler plug (2).
- Install the transmission oil level/filler plug (2) into the transmission.
Tighten
Tighten the transmission oil level/filler plug (2) to 28 N·m
(20 lb ft).
- Lower the vehicle.
- Install four bolts to the fan shroud at the radiator.
Tighten
Tighten the fan shroud bolts to 10 N·m (89 lb in).
- Install the gearshift control lever into the gearshift lever case.
Refer to
Gearshift Control Lever Installation
.