Where is the door ajar sensor located for left rear on a 2003 Chevy Silverado Crew Cab?
The door ajar sensor for the left rear door of a 2003 Chevy Silverado Crew Cab is located inside the left rear door itself, near the door latch mechanism. You'll likely need to remove the interior door panel to access it. It's a small switch that's typically part of the latch assembly or mounted very close to it.