have my car in garage, found the compressor, took the lines off for the air... turned the key on to the on position... nothing. Compressor doesnt kick on or anything... what does this mean? i dont want to buy another compressor, what are my options here? I dont really care much about the auto leveling as i never tow anything and never will... help!

have air lines off, cant blow air through them. also the shock doesnt seem to be very shocky (yes i said shocky lol) i jacked under the rear pass hub area and the shock doesnt seam to really do much, the hole car lifts instead of the rear arm. whats going on with this thing? will it help if i put new shocks on? what about the compressor not running... ugh!

Have you checked the fuse? I believe it'* in the maxifuse box on the fire wall under the hood.

i found a relay under back seat fuse box... didnt see a fuse for it there... never checked under the hood! ill run and look quick and let ya know in a minute

Dont see anything about elc. one maxifuse says "air" and one mini relay says "air"

You may have to check the owners manual on where exactly the ELC fuse is located. I thought it was in the maxifuse panel.

there is a relay and fuse under the back seat. they should be good, i swapped the relay out with another relay of the same numbers and still nothing and fuse is good. wouldnt mind tryin to "hot wire" the compressor, just not sure how!

any ideas how to test the compressor???

I did a write up a while back on doing a ELC over ride. Not sure how close this is to yoru car, but perhaps it will be of use.

https://www.gmforum.com/t278412/

just looking for a way to get the compressor to turn on, direct hot wire just to make sure it dont work... confused why car rides rough as hell after its cold outside but had it in heated garage then took it out and rode good... but compressor dont even turn on, car dont sag at all... grrrrr