Trailblazer Air Suspension Failure

I had a similar issue with my Trailblazer. Symptoms sound identical: the leaning, the error messages. Air suspension malfunction can cause the load leveling system to fail, which uses air struts to maintain the vehicle's height. A defective cable or plug connection of the component is a common cause. Have you checked the wiring and connections to the compressor itself?

Thanks for the quick response! I did a quick visual inspection, but didn't dive too deep. Where exactly should I be looking for these connections? Any specific plugs or areas prone to corrosion?

Given that you are seeing multiple symptoms including error messages and the vehicle leaning, I would advise against attempting to diagnose the problem yourself if you are not comfortable with automotive electrical systems. A faulty connection is the most probable cause, but it could also be a defective level sensor or the air compressor itself. I'd take it to a reputable workshop before you potentially cause further damage to the suspension system.

Appreciate the advice! You were spot on. Turns out it was a corroded connector on the compressor. Workshop cleaned it up and replaced the connector. Cost me 95€ and I'm back on the road!