Transmission Case Cleaning and Inspection

Fig 1: Identifying Transmission Case Components

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	Case Cover Sealing Surface
2	Manual Shift Shaft Seal Surface NOTE: Refer to Manual Shift Shaft Seal Replacement .
3	Fluid Pressure Test Plug
4	Fluid Drain Plug
5	Control Valve Body Cover Sealing Surface
6	Torque Converter Housing Sealing Surface
7	Transmission Fluid Cooler Pipe Stud M8x30.5 (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 12 N.m (106 lb in)
8	Transmission Case Cover Locator Pin Procedure Inspect the locating pins to be fully seated in case.