GM Service Manual Online
For 1990-2009 cars only

Condition

Cause

The lock system does not lock.

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