No Overrun Braking - Manual 3-2-1

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
External Linkage	Not adjusted properly
Valve Body Assembly (60)	4-3 Sequence valve stuck Checkball mispositioned Spacer plate and gaskets incorrect, damaged or mispositioned
Overrun and Forward Clutch Assembly (644-651)	Turbine shaft oil passages plugged or not drilled Turbine shaft seal rings damaged Turbine shaft sealing balls loose or missing Porosity in forward or overrun clutch piston Overrun piston seals cut or damaged Overrun piston checkball not sealing