'Service Suspension System', 2010 Yukon Denali

[Tim907356]

So I just changed out the rear shocks, after discovering the perforated air bags. My compressor would run whenever it was out of level, but it never threw a code/alert. Now, with the new shocks, they were actually working, leveling the load when we put weight on the rear. However now, maybe 2-3 short trips (<15mi.) I'm getting the 'Service Suspension System' message.
An thoughts as to why? -And if it's just a nuisance message, should the shocks still pump and level as they did earlier in the week??
TIA.

 

[j91z28d1]

almost always you knocked the connector loose on top of the frame rail on the passenger side getting to the top bolt.

I knew about it and still did it. if it's not that you'll need a scanner capable of pulling body codes and see what it points to.

 

[gooffeyguy]

As said above. This is common when replacing that shock. The socket/extension rubs against a hidden wire harness connector on the frame rail and usually disconnects it.

 

[Doubeleive]

although the noted connector on top of the frame above the shock bolt can be knocked loose that connector is for ABS, which would throw a ABS light
so... I would be double checking the shock harness, pull them both off and inspect to see if maybe a pin got bent or something, also check the ride height sensors and rods to see if maybe one broke or somehow came loose.
you did not mention if you used oem or aftermarket on the rear shocks, if you used aftermarket this could also be a issue.

 

[gooffeyguy]

although the noted connector on top of the frame above the shock bolt can be knocked loose that connector is for ABS, which would throw a ABS light
so... I would be double checking the shock harness, pull them both off and inspect to see if maybe a pin got bent or something, also check the ride height sensors and rods to see if maybe one broke or somehow came loose.
you did not mention if you used oem or aftermarket on the rear shocks, if you used aftermarket this could also be a issue.

Good point. The loose ABS connector may give a Service Stabilitrack error though

 

[Doubeleive]

Good point. The loose ABS connector may give a Service Stabilitrack error though

it should be checked for sure BUT I think if ABS was going to cause any other code it would say service stabiltrack, which the shocks could do as well
it all works together...

 

[Tim907356]

Thanks for the feedback. I knocked off the ABS plug as most do unknowingly, and got the stabiltrack error when the job was completed. The error quite once I connected it back. Nevertheless, I checked the plugs and all were secure. The shocks are aftermarket, so there's that.
Since they worked (pumped up) right after installation, will they continue to operate, or is this message a show stopper?

 

[Doubeleive]

Thanks for the feedback. I knocked off the ABS plug as most do unknowingly, and got the stabiltrack error when the job was completed. The error quite once I connected it back. Nevertheless, I checked the plugs and all were secure. The shocks are aftermarket, so there's that.
Since they worked (pumped up) right after installation, will they continue to operate, or is this message a show stopper?

if they are passive then you need resistors to make the error message go away, the resistors fool the BCM into thinking all is well.

 

[Doubeleive]

here are some economical ones, there may be others that just plug-in instead of having to cut the harness

Autoride Z55 Shock Bypass Modules (2) 2007-2014 GM GMC Chevrolet Cadillac | eBay

Autoride Z55 Bypass Modules (2). Bypass Modules allow for the use of standard shocks on vehicles equipped with the Z55 Electronic Autoride Suspension systems. Install in the Front or Rear. Also works on vehicles with rear auto leveling shocks.Simply remove OEM shocks and replace with air shocks...

www.ebay.com

 

[Tim907356]

For that price, they're OTW Thanks. Will plugging them in instead of the shocks keep the ALS from working?...Thinking after writing, I guess it should not, since the ride height sensors are on the rods. The plugs on the shocks are just to tell the system they're there, I suppose...
Here's the shocks I ordered. They're a direct replacement for what I had; my oem part number is right on the list !?!?

Pair Rear Air Suspension Strut Shocks For GMC Chevy Cadillac Escalade 2000-2013 | eBay

2002-2014 for Cadillac Escalade Rear. 2003-2014 for Cadillac Escalade ESV Rear. 2002-2013 for Cadillac Escalade EXT Rear. Pair Front Suspension Shock Struts fit Cadillac Escalade GMC Yukon Chevrolet. 2 unit for front Suspension Shock Struts fit Cadillac Escalade GMC Yukon.

www.ebay.com