Frozen Lock Cylinder Repair
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Repair frozen lock cylinders due to cold weather using the following procedure:
IMPORTANT:
Be careful not to damage painted surfaces while using a heat gun.
- Apply heat to the cylinder area with a heat gun.
- Use a paper clip or similar item in order to hold the shutter door open.
- Use compressed air and a blow gun attachment in order to force air into the cylinder.
- While holding the shutter door open, inject a small amount of multi-purpose lubricant GM P/N 12346241 or equivalent.
- Work the key into the cylinder several times.
- Wipe any excess lubrication residue from the key.