Air leveling system module location

Dammen8 said:

It rarely runs on startup anymore, I put my car trailer on the other day and it never ran, it just let the vehicle sag. I have owned this vehicle for 35000 miles and yes it is supposed to do a test run at startup but sadly 95 percent of the time it does not and if it does happen to, the run time is only a second or two..

Chad

Click to expand...

Dammen8 said:

Can anyone help point me in the right direction as to where the module is located in a 2014 yukon denali?

I have a feeling that mine is having issues because it very intermittently with run the compress and when it does run, it only runs for a second up to maybe 3 seconds. Thanks for any help

Chad

Click to expand...

dasdunkelrabe said:

Hey everyone I know it's been a year since this post but I'm having similar issues and can use some help.

I'll explain what I've done so far the best I can.

I have a 2011 Yukon Denali. Of course all-wheel drive 6.2 L. About a month ago I got new tires installed at Walmart and then the following week I noticed that the tires were rubbing the rear wheel well when I would corner on the road or on a banking on ramp. I noticed that there was the original shocks that were blown out and had holes in them. And the compressor had quit working probably because it had overworked trying to keep up.

I ordered a kit from LKQ A1 Auto that had good ratings which had the two air ride shocks and compressor. I installed them accordingly fired it up and it kicked on and auto level. Everything seemed okay. Two weeks into it I went to go drive again and it was bottomed out. The compressor would not kick on.

I checked fuses 2 58 and 54, and the relay which is next to the fuse box and everything seemed to be okay as far as their function. The compressor does kick on when I bypass the relay from pin 30 to 87. But the bags do not fill. I checked the airlines for obstructions and I do get air coming out of the tubes but nothing inside the airbag shocks. I am sure that the sensors on the shocks have some sort of mechanism that allows the air in or out accordingly. I replaced the relay just in case and the fuses and to no avail it still hasn't worked. I checked the control module underneath the spare tire and everything seems to be connected correctly however I don't know where to look or diagnose if the control module has failed or if I'm missing something else. I see no brakes in the wire harness or any of the connectors.

Click to expand...