Mechanics

REAR AIR SUSPENSION DROPS

2003 GMC Envoy • 84,500 miles

I currently have the SUV in the dealership because the rear air ride suspension keeps dropping about 2 1/2 inches after the car sits for about 3 hours. The suspension drops evenly on both sides. Initially the service dept told me I needed to replace the air bags and the compressor, but the leak still occurs at the same rate after the items were replaced. They have checked for errors in the computer system, but nothing comes up. They tried re-setting the system, but that didn't work either. Now I am being told that a certain amount of droppage is expected, but I have had the car for 6 years and this is the first time this has happened.

Any ideas on what this might be?

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Bennettair193
March 27, 2012.



-Sounds like its leaking somewhere or a problem with air suspension leveling sensor-

Rasmataz
Mar 27, 2012.
Yes, it has a leak and it sounds like the dealer just jumped to the wrong conclusion and didn't check it out thoroughly enough.

Wrenchtech
Mar 27, 2012.
I had a similar issue, that was a leak at the connection between the compressor and accessory output in the cargo area.

Tiny
Xpf1xp
Mar 28, 2012.