GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

DEFINITION: Forward Motion in Neutral

Forward Clutch Housing

Feed hole plugged, inspect tower

Forward Clutch Piston

Jammed

Forward Clutch Plates

Seized or jammed

Forward Clutch Springs

Jammed

Forward/Coast Clutch Support Hub

Holes plugged

Manual Valve

Mispositioned or stuck

Shift Linkage

    • Mispositioned
    • Disconnected