Transmission Case Cleaning and Inspection

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

Fig 1: Cleaning & Inspecting Transmission Case

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
CAUTION: Do not use abrasive pads or bristle devices to clean the sealing surfaces. Abrasive pads produce a fine grit that can effect transmission function. Abrasive pads can also remove enough metal to create oil leaks. CAUTION: After cleaning the transmission components, allow to air dry. Do not use cloth or paper towels in order to dry any transmission components. Lint from the towels can cause component failure. CAUTION: Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component. Preliminary Procedures Thoroughly clean the transmission case assembly, including case threads, with clean solvent. Clean gasket sealing surfaces. Remove all residual gasket material. Inspect all threaded holes. If necessary, repair any thread damage.
1	Torque Converter Housing Locating Pin Procedure Inspect the torque converter housing locating pins. NOTE: The locating pins installed height is 7.4mm (0.29in).
2	Fluid Trough Check Ball NOTE: The check ball installed depth is 11mm (0.43in).
3	Converter Housing Sealing Surface
4	Control Valve Body Cover Sealing Surface
5	Fill Cap Seal
6	Transmission Fluid Cooler Pipe Sealing Surface
7	Fluid Pressure Test Plug CAUTION: Refer to Fastener Caution . Tighten 12 N.m (106 lb in)
8	Manual Shift Shaft Seal Surface
9	Fluid Fill Cap Sealing Surface
10	Fluid Level Plug Tighten 12 N.m (106 lb in)
11	Valve Body Locating Pin Procedure Inspect the valve body locating pins. NOTE: The locating pins installed height is 5.8mm (0.22in).
12	Drain Plug Tighten 12 N.m (106 lb in)