GM Service Manual Online
For 1990-2009 cars only

No Gear Selections

Checks

Causes

Manual Valve to Detent Lever Link (802)

    • Broken or missing
    • Disconnected from the manual valve

Manual Valve to Link Clip (801)

Disconnected

Manual Valve (800)

Stuck

Shift Linkage

Disconnected

Valve Body, Channel Plate and Case

Blocked fluid channels