Mechanics

GMC ENVOY SHOCKS PROBLEM

2002 GMC Envoy

Suspension problem
2002 GMC Envoy 6 cyl Two Wheel Drive Automatic 72000 miles

when I arrive in morning the car is sitting down with air shocks deflated, but not always, just every now and then, seems to be getting worst.
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Lockie1
October 21, 2008.



All 4 are low? Could be a stuck bleed off valve or relay doing that. Might need to have the BCM scanned to see if it has stored or seen any failures in the system. Also look for any obvious physical damage to the air bags

Tiny
Jack42
Oct 22, 2008.
Only the rear two shocks let the air out, but sporadic, what is bcm, and no there is no visible damage. Have had three mechanic try and find out what the problem is and they could not. Also cruise control is sporadic. Is there some computer/board that could be malfunctioning?

Tiny
Lockie1
Oct 22, 2008.
BCM is the Body Control Module. Have it scanned. Pretty sure the valves are on the motor for the rear shocks, most likely the valve or motor itself has a slow leak. Might need to go to the dealer for this one, they will be more familiar with the common problems of your vehicle

Tiny
Jack42
Oct 22, 2008.