GM Service Manual Online
For 1990-2009 cars only

Cause

Correction

  • The locking wire is too loose or is disconnected.

Tighten the locking wire enough in order to allow the following actions to occur simultaneously:

    â€¢ The lock control lever activates.
    â€¢ The lock bar disengages from the locking slots in the adjuster lower channel.
  • The adjuster lock bar sticks or binds.
    â€¢ Lubricate the lock bar pivot.
    â€¢ Eliminate the cause of the binding. Replace the adjuster if the bar is binding.