Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
The same thing happen to me when I installed a lowering kit on my Denali for me the problem was the two rear ride control arms had come off their clips and just needed to be snapped into place. Those arms tell the compressor how much air to put in out and are located on the right side of the wheel well I would check to see that those are connected because its in easy fix with some pliers just pop them back on.