Air Suspension Issues

[browngb87]

I’m possibly missing an old thread but I can’t find it so please bear with me.

2012 GMC Yukon XL Denali

Rear auto level has stopped working. From what I gather the fact that it’s not working and I don’t have a warning light seems odd. I’ve checked fuses everything seems good on the fuse block. What’s my next step?

I work at a tractor/boat dealership and tow fairly regularly so I noticed the dog rubbing it’s ass on the ground look today and realized it wasn’t working.

Any advice is greatly appreciated!

 

[George B]

Couple things.
Does the compressor do a test run at key on or when you start the truck?
When you squeeze the air bladders on the shocks are they flat or do they have any pressure in them?

The thread you want starts here:

Autoride suspension help

I have a 2009 Yukon Denali Xl. For the past few months the Autoride compressor has been super noisy and running constantly. 2 weeks ago, I decided to replace the rear shocks with Arnott rebuilt units. After replacing the compressor was still noisy which is knew it would be, but it would run as...

www.tahoeyukonforum.com

 

[avalonandl]

If they are the OE air shocks they need replacing]

If the air pump does not come on then it needs repplacing- change both.

With these vehicles plan on spending 1000 a year maintenance.

 

[Joseph Garcia]

Do you have a Tech 2 or other bi-directional scanner? Those issues are fairly to diagnose with these tools, as there are special diagnostic and test features in them for this suspension.

I recently replaced the entire suspension on my truck back to the OEM Denali electronic/air ride.

As indicated above, if you do not hear the compressor briefly turn on, when you start the truck, that may be a starting point for your troubleshooting.

 

[13UpInSmoke]

Like others said you should hear the compressor kick on everytime you turn the key on.