Transmission Case Cleaning And Inspection

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transmission Case

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
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	Front Case Sealing Surface
2	Manual Shift Shaft Seal Procedure To service the manual shift shaft seal, refer to Manual Shift Shaft Seal Removal , or Manual Shift Shaft Seal Installation .
3	Electrical Connector Passage Sleeve Bore
4	Park Pawl Actuator Guide - Bore
5	Clutch Housing Fluid Passage Seal Surface
6	Fluid Pan Sealing Surface
7	Rear Case Sealing Surface