Handle and Lock Cylinder - Rear Door Outside: Notes
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
New lock cylinders are available as replacement parts. If the door lock cylinders require replacement for any reason, apply a coating of lubricant. Use GM P/N 12346241, Canadian P/N 10953474, or the equivalent, inside the lock case and the cylinder keyway prior to assembling and installing the cylinder.
Refer to BINDING LOCK CYLINDERS in Doors in order to repair a binding lock cylinder. Refer to Key and Lock Cylinder Coding in General Information in order to code a new lock cylinder.