Air suspension compressor help - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Brakes, Suspension, Wheels and Tires > Suspension

Suspension Suspension

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Old 12-02-2018, 01:14 AM
ZUMA ZUMA is offline
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Join Date: Dec 2018
Posts: 1
Air suspension compressor help

First I'm sorry for asking this because I have been searching for a while now and have seen this asked a lot but I still haven't found what I'm looking for.

So my problem is the compressor has not turned on for the passed few weeks. Before it would run a little as soon a the car would be turned on. Also the air compressor in the rear cargo bay does not work and has no light on the switch.

Both ECAS and 4WD fuses are good
I disconnected the wire harness from the compressor and I do get 12V from the harness when the car is on (Orange wire H and Black wire D)

Since testing that out I have been doing a lot more searching and found some schematics and found there is an Ignition 3 Voltage wire there. Should I see 12V there too?

How do I run the compressor to see if the compressor is bad? Can I get away with putting a 12V source to the ground and battery positive voltage pins on the compressor? Should that turn the compressor on or do I also have to have 12V on the Ignition 3 Voltage pin too?

Envoy XL Denali 2006
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