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Re: idler noise
Posted to HVAC Forum on 8/3/2020

I have had this Yukon for approx 3 years but do not drive it often. it has approx 95k miles I never had ac worked on. I will recheck 8/5. I just remember the 70s had poa valve to help with acceleration. did not know if this gmc had some kind of control. again ... Login to read more.