GM Service Manual Online
For 1990-2009 cars only

Check

Causes

DEFINITION: One of the two following conditions occurs during a first to second gear steady throttle upshift, or a second to first gear coast, or a light to moderate throttle detent downshift:

    â€¢ Harsh shift feel
        An unacceptable quick gear change occurs.
    â€¢ Soft shift feel
        An unacceptable long gear change occurs.

Second Clutch

    â€¢ Damaged piston, 1-2, 2-1 shift
    â€¢ Damaged or worn clutch plates, 1-2, 2-1 shift

Pressure Control Solenoid

Damaged

Fluid Pump

Damaged