Torque Converter Housing Cleaning and Inspection

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Torque Converter Housing

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Thoroughly clean the torque converter housing assembly, including threads, with clean solvent. Clean sealing surfaces. Inspect all threaded holes. If necessary, repair any thread damage.
1	Line Pressure Test Hole Plug CAUTION: Use care when tightening the line pressure test hole plug. Do not use a socket extension, which could cause side-loading and potentially crack the transmission case assembly. CAUTION: Refer to Fastener Caution . Tighten 11 N.m (97 lb in)
2	A/Trans Vent Pipe
3	Trans Fluid Cooler Pipe Fitting Seal CAUTION: Refer to Seal Reuse Caution . TIP: Refer to Transmission Fluid Cooler Pipe Seal Replacement .
4	Torque Converter Bushing