Transmission Case Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.

Clean the transmission case in a suitable solvent and air dry.

Fig 1: Inspecting Transmission Case
Courtesy of GENERAL MOTORS CORP.
Clean all sealant material from the retainer bolt threads.

NOTE: Refer to MACHINED SURFACE DAMAGE NOTICE in Cautions and Notices.

Clean all sealant material from the case sealing surfaces.
Inspect the transmission case for the following conditions:
- Cracks
- Damaged threads
- Burrs
- Nicked mounting surfaces
- Damaged sealing surfaces
Inspect the bearing races and bores for wear, scratches or grooves.
With a straight edge, inspect the machined sealing surfaces for flatness.
Use a soft stone to dress minor scratches or burrs on the sealing surfaces. Do not use a file.
If scratches, grooves or scoring cannot be removed by hand with a soft stone, replace the component.
With the correct size tap, clean damaged threads.
Replace a cracked housing.