Frozen Lock Cylinder Repair

Tools Required 

J 25070  Heat Gun. See Special Tools .

IMPORTANT: Do not damage the painted surfaces while using the heat gun.
1. Apply heat to the cylinder area using J 25070  . See Special Tools .
2. Hold the shutter door open with a paper clip or similar item and force air into the cylinder using compressed air and a blow gun attachment.
3. While holding the shutter door open inject a small amount of multi-purpose lubricant GM P/N 12346241 or equivalent.
4. Work the key into the cylinder several times and wipe any excess lubricant residue from the key.