GM Service Manual Online
For 1990-2009 cars only

Condition

Possible Cause

No Reverse or slips in reverse

    â€¢ Low Fluid
    â€¢ Shift select cable out of adjustment, binding or damaged
    â€¢ Spacer plate or gaskets improper position or damaged
    â€¢ Check balls omitted or improper position
    â€¢ Manual valve binding or sticking
    â€¢ Manual valve link disconnected
    â€¢ Direct clutch piston or seal damaged
    â€¢ Incorrect line pressure