Lock Cylinder Replacement - Rear Door: Notes
WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
If the door lock cylinders require replacement for any reason, apply a coating of lubricant. Lubricate the inside of the lock case and the cylinder keyway prior to assembling and installing the cylinder. Use GM P/N 12346241 (Canadian P/N 10953474) or an equivalent lubricant.