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View Full Version : tweaking noise under dash


redman1940
03-16-2005, 10:50
I have a chev. Duramax 2500 hd with 61000. It has deveoped a
tweaking noise under the dash, drivers side. The noise is very faint and only occures when the AC is on and the veh is moving. Sounds like it might be a breaker of some sort but it has a rhythm to it-- every 20 to 25 secs. Took to dealer, dealer hears it but dont't know what it is . help[ thanks
madmatt
03-16-2005, 14:42
A "tweaking"???? sure it's not the a/c clutch kicking in and out under the hood. these clutches can get louder w/ age or bearing failures. I had a seat that was clicking one time. the seat heater element was open and the relay under the seat was clicking in and out.
curtk
03-20-2005, 13:09
I have an 01 Duramax that has had the same "chirp" from drivers side dash area as you describe. Have never figured it out.
redman1940
03-20-2005, 18:38
Originally posted by curtk:
I have an 01 Duramax that has had the same "chirp" from drivers side dash area as you describe. Have never figured it out.
HammerDown
03-21-2005, 17:35
I have an 83 6.2 and a duramax 02 same sound as you explain in bolth of them. Does it with the air on or the heat. Have never figured out.