GM Service Manual Online
For 1990-2009 cars only

Lock Cylinder Can Be Removed Without Depressing Retainer for Chevrolet Chevy P12 Chassis 1999

Problem

Action

The retainer is faulty.

Replace the lock cylinder.

Refer to Steering Column Lock Cylinder Set - Off Vehicle .

A burr is over the retainer slot in the housing cover.

Remove the burr.