S10/T10 Blazer 4WD V6-4.3L VIN W (1997)
Frozen lock cylinders due to cold weather may be repaired using the following procedure:
1. Apply heat to the lock cylinder with a heat gun while being careful not to damage the painted surfaces.
2. Hold the lock cylinder shutter open with a paper clip (or similar object) and force air into the cylinder using compressed air and a blow gun
attachment.
3. While holding the lock cylinder shutter open, inject a small amount of lubricant (refer to above recommendations) into the cylinder.
4. Work the key into the lock cylinder several times and wipe any excess lubricant from the key.
