Sorry for the duplicate post. Im a newbie !Appreciate that suggestion and will give it a try.
I believe the compressor in the vehicle is the original factory compressor. I have a new Dorman compressor and two new Vigor rear air shocks coming in today but hate to spend the time and money swapping them out if it is not the problem (Free returns on the Dorman & shocks). Probably wouldn't be a bad idea regardless, since my Tahoe is a 2011.