Rattling Noise From AC Belt Tensioner on GMC Yukon XL 1500

A rattling noise may develop from the AC belt tensioner. This can be caused by an internal fault with the AC compressor, AC performance may also be diminished when this occurs. Our technicians tell us that replacing the ac compressor will commonly correct this concern.


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Average mileage: 188,547 (112,000–230,000)
3 model years affected: 2000, 2001, 2002
9 people reported this problem
6 people shared problem details
My A/C my tension pulley continued to vibrate at low speeds until it finally broke. I replaced it to only have it happen again. The root of the problem was the A/C compressor had sludge in it which caused it to put harmful strain on the tension pulley. I replaced the compressor, drier and orifice for under $350 (DYI. You can purchase a new kit online for about $225 (all items included. Be sure to replace the orifice and clean out the lines, so that no debris finds its way back to you new compressor. YouTube has a great series of videos on how to change your A/C compressor, drier and orifice. you can save yourself at least $700 by doing it yourself. Also, have a shop evacuate your system of any coolant. I had my system evacuated and refilled for under $100 at a Valvoline Oil change facility (included in the $350). This is a common problem with this vehicle, although I can't complain, 195K is a lot of miles. I bought my Yukon new and have enjoyed every mile and wouldn't hesitate purchasing another one.
Ac rattling when RPMs are climbing from 1500 to 2000. Replaced tensioner twice, belt 3 times, and clutch 1 time. Looking to replace the compressor next.
A rattling noise was coming from my AC when it was running. Now there is no AC and no noise.
Recently had a full service on my AC now sometimes it will freeze u out one minute then suddenly blows hot air. Tried putting more AC coolant in it but it is full now today when I need it more than ever it won't work
I noticed this problem about two weeks ago, so my mechanic changed out my belts. But I still noticed the rattling at 1.5rpm's. WTH!!! The air still blows very cold, but that noise is soo annoying. Getting my compressor changed today. Hope it fixes it.
Not cooling. Rattling noise. Bad ildle surge when compressor comes on. Not fixed yet, waiting for mechanic to have time.
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