GM Service Manual Online
For 1990-2009 cars only

Frozen Lock Cylinder Repair for Pontiac Montana SV6 Ext. 2007

Use the following procedure in order to repair frozen lock cylinders that are frozen due to cold weather:

  1. Using a heat gun, apply heat to the cylinder area.
  2. Hold the shutter open with a paper clip or a similar item and force air into the cylinder using compressed air and a blow gun attachment.
  3. Hold the shutter open and inject a small amount of Super-Lube® GM P/N 12346241 (Canadian P/N 1093474) or equivalent.
  4. Work the key into the cylinder several times.
  5. Wipe the excess lubricant from the key.