2007 Cadillac Escalade ESV Door Lock Cylinder

You need to position the door window as needed for service and remove the door trim panel and the water deflector, and the outside door handle.

While carefully avoiding damage to the painted surfaces, apply heat to the cylinder with a heat gun. Using a paper clip or a similar item, hold the door shutter open and force air into the cylinders using compressed air through a blowgun attachment. While holding the shutter door open, inject small amounts of a recommended lubricant into the cylinder, work the key into the cylinder repeatedly and wipe away any excess lubrication from the key.