Tools Required

J 25070 Heat Gun

Use the following procedure to repair lock cylinders frozen by cold weather:

Important: Be careful not to damage painted surfaces while using a heat gun.

1. Use J 25070 to apply heat 152 mm (6 in) in a circular motion for 30 seconds to the lock cylinder area.
2. Using compressed air and a blow gun attachment, hold the shutter door open with a paper clip or similar item and force the air into the lock cylinder.
3. Hold the shutter door open and inject a small amount of the Multi-Purpose Lubricant GM P/N 12346241 or the equivalent into the lock cylinder.
4. Work the key into the lock cylinder several times and wipe any excess lubrication residue from the key and the lock cylinder.