GM Service Manual Online
For 1990-2009 cars only

Checks

Cause

Direct Clutch (608-609)

    • Burned clutch plates
    • Seal ring is off the piston
    • Exhaust check ball is sticking

Lo and Reverse Clutch

    • Housing cup plug assembly is restricted or not fully seated
    • Leaking seals

Lo and Reverse Pipe

O-ring seal is damaged or missing

Case to Cover Gasket

    • Incorrect (the driven sprocket support height is wrong)
    • Damaged or leaking

Lo and Reverse Clutch

Burned plates

Manual Valve

A fallen out retainer clip

Low Line Pressure

Check the causes of low line pressure

Low Reverse Piston

Piston stuck