Doors - Lock Cylinders Inoperative
Bulletin: 85-10-24Date: June 1985
Ref. No..: 85-271-10
SUBJECT: DOOR LOCK CYLINDERS
MODELS AFFECTED: ALL
Some vehicles may develop inoperative door lock cylinders. This may be characterized by difficulty inserting, extracting and/or turning the key.
These lock cylinders can be restored with the use of a silicone lubricant (GM Part Number 1052276 or 1052277).
NOTE: Do not use any type of lubricant that contains chlorine on vehicles with a plastic cap around the lock cylinder as it may destroy the plastic.