Hi All!

Looking for any thoughts on what would be causing my a/c compressor belt to snap cleanly? Has happened twice in a 2 week period - replaced the 1st belt and the tensioner and 2 weeks later replaced the belt after a snap... 2 days later, snapped again and had to change tensioner again... Any thoughts, tips, and comments welcome - and thanks in advance!

 

Same problem here on my 2001 Sub. Compressor replacement. Sorry!

 

Jommer, thanks... I was afraid of that... did you do the replacement yourself or take it in... any info on how complex or challenging to replace is appreciated!

 

It's possible your a/c compressor has no oil in it (pac 150). But don't try and check the oil level because the a/c system is under high pressure. Take it to a shop and have them recover the old refrigerant then you can start pulling the compressor. Tape off any refrigerant lines to prevent any air and moisture from entering the system. Remove the compressor and drain any oil if there is any into a small container. About 3oz. should come out. If no oil drains out replace the compressor. If some oil is present it could be the a/c clutch. If thats the case replace the compressor. Once you replace the compressor you have to evacuate the system with a vacuum pump for about 30 minutes. Then recharge the system with the amount of refrigerant that is indicated on top of the accumulator. Good luck

 

Same problem here on my 2002 Sub, Thank for the information I appreciate it…..👍🏿

 

Sorry, but had the same issue on our 2005 Yukon Denali with rear AC, kept snapping AC belts, cooled fine until each belt snapped. This can happen by design of compressor mounted so low, causes compressor to "slug", and break belts.

I installed a brand-new compressor to fix, a few years ago. I did NOT replace the condenser, I did NOT replace the accumulator. This fixed it. I also added a $40 Deslugger electronic module form Four Seasons, was MACS product of the year back then, helps prevent slugging on a compressor that has NOT had the issue (won't help a slugged compressor). Five years later we sold the 2005 and purchased a 2011, and I transferred the Deslugger module to the 2011.

 

Well, Mrs. Cusser was hit by a red light runner in Oct. 2022, and the 2011 Yukon was totaled out by insurance company. I was able to retrieve what I could, but could not retrieve the Deslugger module as we couldn't get the hood open. In November 2022 we got a 2014 Yukon XL Denali to replace that (she needed the 6.2 engine to tow the horse trailer/horses). Yesterday I installed a brand-new Deslugger in that toughest thing was drilling two holes to mount it as I didn't want to home-engineer and trust plastic cable ties over time/heat. The Deslugger simply plugs into the harness to the compressor, has the correct fittings. So it's like an insurance policy, I hope it helps if I need it !!!

 

Above post: in October 2022, a red light runner totaled that 2011 Yukon Denali; since we could not open the hood or crawl under at the body shop prior to it being totaled, I was unable to salvage/retrieve the Deslugger module. Since Mrs. Cusser needed a vehicle with enough power to haul a 2-horse trailer and again did not want a pickup truck, and we did not want to spend $80K or more, and used Suburbans or non-Denali Yukons did not generally have the larger 6.2 liter engine, we picked up a creampuff 2014 Yukon XL Denali in November 2022.

In July 2023, I bought a new Deslugger module for this through Amazon for $53, and installed it. Yesterday, I noticed that the AC was blowing warm immediately, opened the hood and saw that the compressor was not engaged. So I unplugged both ends of the Deslugger, plugged the 2-wire AC harness back into the compressor and the AC compressor engaged. I did this test a second time, hooking up the Deslugger with no engagement, then bypassing it to engage the compressor. So defective Deslugger, only worked 2 months.

Since Amazon reseller only lists refund or replacement for 30 days if in original/unused condition, and Amazon states to get warranty through manufacturer, I contacted Four Seasons and in my first reply it didn't seem that they wanted to be too helpful. But that was on a Friday afternoon, so I need to wait until next week to know....

 

Update: Amazon "product support" page told me to contact manufacturer to fulfill the warranty: Four Seasons basically told me to take a hike, not their issue, to try to get refund or replacement from the Amazon reseller, who of course will return it to Four Seasons.

Anyway, looks like the reseller (PartsHawk) WILL stand behind this even though their listing page states 30 day return window if in new unused condition. O'Reilly and others sell this with a 1-year warranty for refund or replacement.