No Reverse or Slips in Reverse

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
Input Housing Assembly (602)	3-4 Apply ring stuck in applied position Forward clutch not releasing Turbine shaft seals missing, cut or damaged
Manual Valve Link (89)	Disconnected
Valve Body Assembly (60)	2-3 Shift valve stuck Manual linkage not adjusted Spacer plate and gaskets incorrect, mispositioned or damaged Lo overrun valve stuck Orificed cup plug restricted, missing or damaged
Reverse Input Clutch Assembly (605-614)	Clutch plate worn Reverse input housing and drum assembly cracked at weld Clutch plate retaining ring out of groove Return spring assembly retaining ring out of groove Seals cut or damaged Restricted apply passage Porosity in piston Belleville plate installed incorrectly Excessive clutch plate travel Oversized housing
Lo and Reverse Clutch (694-696)	Clutch plates worn Porosity in piston Seals damaged Return spring assembly retaining ring mispositioned Restricted apply passage
Reaction Sun Shell (670)	Broken spline on reaction sun shell/replace shell