Removal Procedure
Caution: When the transmission is at operating temperatures, take necessary precautions
when removing the drain plug, to avoid being burned by draining
fluid.
- Raise and support the
vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Place a drain pan under the transmission oil pan.
- Remove the oil pan drain plug, if equipped.
- If necessary, remove the bolts and position aside the range selector
cable bracket for clearance while lowering the pan. It is not necessary to
remove the cable from the lever or bracket.
- Remove the oil pan bolts from the front and sides of the pan only.
- Loosen the rear oil pan bolts approximately 4 turns.
- Lightly tap the oil pan with a rubber mallet in order to loosen
the pan to allow the fluid to drain.
- Remove the remaining oil
pan bolts.
- Remove the oil pan and
the gasket.
- Grasp firmly while pulling
down with a twisting motion in order to remove the filter.
- Remove the filter seal.
The filter seal may be stuck in the pump; if necessary, carefully use pliers
or another suitable tool to remove the seal.
- Discard the seal.
- Inspect the fluid color.
- Inspect the filter. Pry the metal crimping away from the top of
the filter and pull apart. The filter may contain the following evidence for
root cause diagnosis:
• | Bronze slivers indicating bushing wear |
- Clean the transmission case and the oil pan gasket surfaces with
solvent, and air dry. You must remove all traces of the old gasket material.
Installation Procedure
- Coat the new filter seal
with automatic transmission fluid.
- Install the new filter seal into the transmission case. Tap the
seal into place using a suitable size socket.
- Install the new filter into the case.
- Install the oil pan and
a new gasket.
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 oil
pan bolts.
Tighten
Tighten the oil pan to transmission case bolts alternately and evenly
to 11 N·m (97 lb in).
- If previously removed, install the range selector cable bracket
and bolts.
Tighten
Tighten the bolts to 25 N·m (18 lb ft).
- Apply a small amount of sealant GM P/N 12346004
to the threads of the oil pan drain plug, if equipped.
- Install the oil pan drain plug, if equipped.
Tighten
Tighten the oil pan drain plug to 18 N·m (13 lb ft).
- Lower the vehicle.
- Fill the transmission to the proper level with DEXRON® III
transmission fluid. Refer to
Transmission Fluid Check
and
Fluid Capacity Specifications
.
- Check the COLD fluid level reading for initial fill only.
- Inspect the oil pan gasket for leaks.