GM Service Manual Online
For 1990-2009 cars only

Condition

Cause

The lock system does not lock.

    â€¢ A broken lock bolt spring
    â€¢ A worn lock bolt spring
    â€¢ A damaged sector
    â€¢ A damaged lock cylinder
    â€¢ A burr on the lock bolt
    â€¢ A damaged housing
    â€¢ A damaged rack
    â€¢ Interference between the bowl and the rack coupling
    â€¢ A binding ignition switch
    â€¢ A restricted actuator rod
    â€¢ The sector is installed incorrectly.
    â€¢ The shift lever is not in the PARK position.
    â€¢ The park lock cable is incorrectly adjusted.
    â€¢ The park lock components are damaged.