GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

1-2 Shift Solenoid Valve

Stuck ON

1-2 Shift Valve

Stuck in 1st gear

2nd Clutch Piston/Seals

    • Cracked or damaged
    • Rolled, damaged or leaking

2nd Clutch Plates

Burned or damaged

2nd Clutch Return Springs

Broken, out of position

2nd Sprag

Damaged, not holding