For 1990-2009 cars

# INOPERATIVE DOOR LOCK CYLINDER RESTORE W/ SILICONE LUBRICANT

#### 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.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.