GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Lock System Does Not Unlock

Inspect the steering column lock system for the following conditions:

    • Proper steering wheel nut tightening specification
    • Lash in the support to pivot pin connection
    • The upper bearing not seated in the housing
    • Missing the upper bearing inner race seat
    • Loose support screws
    • A missing or broken upper bearing spring
    • A loose steering wheel nut