GM Service Manual Online
For 1990-2009 cars only

No Park

Checks

Causes

Parking Lock Actuator Assembly (807)

    â€¢ Bent or damaged rod
    â€¢ Binding or broken spring
    â€¢ The rod is not attached to the detent lever

Detent Roller and Spring (804)

    â€¢ The bolt is not torqued, or loose
    â€¢ Bent or damaged

Detent Lever (806)

    â€¢ Damaged or loose
    â€¢ A manual shaft pin is missing

Manual Valve (800)

    â€¢ Misaligned
    â€¢ The manual valve to detent lever link is bent

Parking Lock Pawl (663)

    â€¢ Damaged
    â€¢ Broken tooth

Park Lock Gear (659)

    â€¢ Damaged teeth
    â€¢ Damaged splines

Park Pawl Spring (662)

Broken or missing

Shift Linkage

Misadjusted