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AC bypass belt for a 2004 Deville


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I think my AC compressor bearings are going bad and I wanted to bypass it until I can replace it. I know from past experience that it can be done and I did it on my 1994 Concours. Does anyone know what size to get on a 2004 Deville? I checked the pulleys, alternator and power steering pump and there doesn’t seem to be any binding or roughness in them.

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I am sorry @PAUL T I can't help you, but had saved this link, thinking it might be helpful one day



Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Thanks Mike for the link. I was hoping that someone would have the belt length for the newer models. If I measure it I will post the information. I think I have the shorter belt on the 94, so I might try it. My wife is getting impatient and wants her car back.🤷🏻‍♂️

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  • 1 month later...

I put the old belt back on to see if I could pinpoint the noise it was making. It sounds like a whirring noise in the water pump area. The one thing that I did notice was that when you shut the car off the belt stops but the noise keeps going for a few seconds. I am suspecting the water pump. Has anyone had this problem before?

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Check the cooling fans. One of the only things I can think of that would continue to make noise after key is turned off


Nice, clean, luxury= fine automobile

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