What does the inside of a auto level compressor look like?

[blue collar]

At 97,000 miles my 2020 Yukon Denali's auto level decided it had enough, it actually would build pressure but it couldn't hold it which turned out to be a leaky shock bladder, replaced those and the next issue was the compressor would now hold the air but wouldn't release it, making the rear end sit high, with kind of a old school hot rodder look to it, took apart the compressor as much as i could and corrosion was a major problem so i replaced it. I cut apart the old one and this is what I found, (the yellow beads are desicant), its fairly straight forward and built well in my opinion. In case you were wondering.

 

[Doubeleive]

At 97,000 miles my 2020 Yukon Denali's auto level decided it had enough, it actually would build pressure but it couldn't hold it which turned out to be a leaky shock bladder, replaced those and the next issue was the compressor would now hold the air but wouldn't release it, making the rear end sit high, with kind of a old school hot rodder look to it, took apart the compressor as much as i could and corrosion was a major problem so i replaced it. I cut apart the old one and this is what I found, (the yellow beads are desicant), its fairly straight forward and built well in my opinion. In case you were wondering.

the relief valve fails is why it pumps up and then does not release pressure, supposedly it's replaceable.
the valve is also prone to leaking as well as the bladders, had it happen before.
a scanner and/or soap & water mix can verify.

 

[blue collar]

Yes, I found the relief valve but it was corroded really bad, I started to wire wheel it off but it was pointless due to the very poor internal finishes that would make sealing impossible, the entire compressor was, inside and out, I'm in Wisconsin so it has seen a lot of stuff thrown at it from that drivers side rear wheel over the years. not that location is ideal by any means.

 

[Joseph Garcia]

Yes, the location of the compressor is not the best for keeping it out of the road grit and salt, but it is in a location that is easy to remove and replace. I'm all for replacing the compressor when you replace the air shocks.