Hi. I have a 2004 Chevy Silverado and the blend door rattles when its in the cold setting. This is the driver's side blend door. The truck has two zones. If I move the temp control toward the middle, the sound stops. The temperature feels fine and switches from cold to hot and back normally. Once in the last year, around 7 months ago it "stuck" in the hot position, but after I turned the truck off it fixed itself and has been operating normally ever since.
- Any ideas what the rattle is?
- If its the actuator, where is it located? Thanks, Brian