2000 Tahoe LS 5.3 a/c compressor squealing

[Randy Whistler]

Recently a squeal developed and I've traced it down to the a/c compressor bearing/pulley area. It's what i consider the typical bearing squeal we've all heard at least once or twice. The squeal happens regardless of a/c on or off, and has not developed into a constant squeal yet, but regular enough to confirm. I know my options are:

a) Drain system, remove/replace compressor, vacuum system & refill
b) Replace bearing and/or assembly not entire compressor

I feel fairly good about the compressor itself, as it puts out cold air, squeal or no squeal. I think it's just the bearing, but do not know if the bearing itself could be changed out of the holder/assembly without great consternation. I hope to avoid cracking the system but know it may be necessary. So, before I crawl into this adventure, I'm hoping there may be some guidance herein. Replacing the bearing only and reusing all other components like bearing carrier, coil, etc. seems a straight-forward first fix. Worst that happens is I have a new bearing for any replacement compressor I have to get to replace the entire pump. Best case is a repaired, non-squealy compressor.

As always with this group, looking forward to what hearing your thoughts and ideas. Members have never failed to offer some help or guidance in the past that I've not gained knowledge and skill from, something I am most appreciative of!

TIA,

 

[Joseph Garcia]

I'd first change the belt and the tensioner, as that 'may' resolve your aqueal issue. If not, no worries, as you should replace them anyway, if you replace the compressor.