GM Service Manual Online
For 1990-2009 cars only

3-4 Shift Feel - Harsh or Soft

Checks

Cause

Possible diagnostic trouble code set

Refer to Causes of High or Low Oil Pressure

Accumulator Cover and Piston

    • Damaged seals
    • Missing springs

#10 Checkball

Missing

Control Valve Assembly

Stuck 3-4 accumulator valve

3-4 Accumulator Spring Package

Present 3-4 accumulator spring

Control Valve Assembly

Missing #10 checkball

3-4 Accumulator Seal

Cut seal

3-4 Accumulator Valve

Stuck valve

Control Valve Assembly

Missing #10 checkball

3-4 Accumulator Seal

Cut seal

3-4 Accumulator Valve

Stuck valve