Question about 2002 GMC Envoy
Definately take it to a shop as you never know what could be wrong with those air ride suspension systems.. could have a leak in the air bag and consequently an overworked compressor... who knows. I converted my old air ride system to a passive coil spring suspension. I got it from Strutmasters.com - (a friend of mine had used them a couple of months prior and recommended them to me) http://www.strutmasters.com/gmc-envoy-suspension-s/95.htm The conversion kits come with a lifetime warranty (I think all of them) Anyways.. hope this helps. Good Luck!!
Posted on Apr 27, 2009
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Four dampers contained in the 2 front struts (5 and 6) and the 2 rear shock absorbers (1 and 9)
Four positions sensors (2, 4, 7, and 8)
ALC air compressor module (10)
Damper relay (not shown)
ELC relay (not shown)
The ESC system with rear automatic level control (ALC) controls damping forces in the front struts and rear shock absorbers in response to various road and driving conditions. The rear ALC portion of the system maintains a proper vehicle trim height under various vehicle load conditions. For more information on the ALC, refer to Automatic Level Control Description and Operation in Automatic Level Control.
The ESC module receives the following inputs: wheel-to-body position, vehicle speed, and lift/dive. The ESC module evaluates these inputs and controls actuators in each of the dampers independently to provide varied levels of suspension control.
Your best bet is take it to the dealer !
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