GM Service Manual Online
For 1990-2009 cars only

Condition

Possible Cause

Harsh engagement into any forward range

    â€¢ Low fluid
    â€¢ TV cable out of adjustment, binding or damaged
    â€¢ Shift select cable out of adjustment, biding or damaged
    â€¢ Manual valve binding or sticking
    â€¢ Throttle valve binding or sticking
    â€¢ B2 control valve binding or sticking
    â€¢ Accumulator(s) pistons damaged or leaking
    â€¢ Accumulator(s) seals cut or damaged
    â€¢ Accumulator(s) broken or distorted springs
    â€¢ Incorrect line pressure