Torque Converter Housing Cleaning and Inspection
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Line Pressure Test Hole Plug (1) - Remove
- Thoroughly clean the torque converter housing assembly, sealing surfaces, including threads, with clean solvent.
- Inspect all threaded holes. If necessary, repair any thread damage.
- Line Pressure Test Hole Plug (1) - Install and tighten - Fastener Specifications
- Automatic Transmission Vent Pipe (2) - Clean and inspect
- Torque Converter Bushing (3) - Clean and inspect
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 .