2.5/1 level Rear end sagging

[zachary barnett]

Hello everyone, I have a 2010 Yukon Denali XL. I have installed a suspension maxx 2.5/1 leveling kit a couple of months ago. my question is why is it higher in the front sometimes and other times it's lower in the front. I do not like the cali lift. Is there any way to keep it from sagging in the back? what's odd to me is it's not always the same. Just the other day i measured the front at about 37" and the rear was 38.5" which is how i want it and other days it measures at about an inch half an inch higher in the front. I will try and post some pictures whenever I can.

 

[fireburban]

My guess is you have failing air ride shocks and or compressor. There is no way the front changes in height, but the rear could if the air ride system is failing,

 

[zachary barnett]

My guess is you have failing air ride shocks and or compressor. There is no way the front changes in height, but the rear could if the air ride system is failing,

how exactly will i be able to diagnose this?

 

[fireburban]

Can you hear the compressor? It was noticeable during the start up on mine. Could start it up and just get under and feel if the air shocks are firm or not.

 

[zachary barnett]

Can you hear the compressor? It was noticeable during the start up on mine. Could start it up and just get under and feel if the air shocks are firm or not.

Yes I can hear it when I turn it on.

 

[fireburban]

Ok, do the bags on the air shocks have air in them, or does it rise during initial start up?

Also might want to check your leveling vales on each side. Located on the trailing arms. Thinking if the compressor works, and the shocks get air, maybe the leveling valves aren't working properly. Maybe just one side, and it's the side you notice the change in height??

Just ideas...

 

[zachary barnett]

Ok, do the bags on the air shocks have air in them, or does it rise during initial start up?

Also might want to check your leveling vales on each side. Located on the trailing arms. Thinking if the compressor works, and the shocks get air, maybe the leveling valves aren't working properly. Maybe just one side, and it's the side you notice the change in height??

Just ideas...

Hmm. I will check the shocks and see if they are getting air. It is both sides that are low i have brackets that move the rods to stock so the auto ride should not be affected in anyway from the level kit

 

[ford141]

Curious to see some before/after pics of the lift if you can post them up.

 

[Big Mama]

Did you relocate the shock mounting point? Not sure an inch lift needs it but worth checking.

 

[zachary barnett]

Did you relocate the shock mounting point? Not sure an inch lift needs it but worth checking.

yes i did 2.5 inches up front and 1 inch in the back. the kit came with a bracket for the front and rear to move the auto ride back to stock position.

 

[zachary barnett]

Curious to see some before/after pics of the lift if you can post them up.

not 100% sure i have a before picture unfortunately but I will look

 

[ford141]

not 100% sure i have a before picture unfortunately but I will look

Even an after picture would be great. I just ordered the same lift yesterday. I have an 08 Denali but my autoride is disabled (bags are blown).

 

[Big Mama]

Did you adjust/bend the actuators on each side? Again not sure if 1” called for that.

 

[zachary barnett]

Even an after picture would be great. I just ordered the same lift yesterday. I have an 08 Denali but my autoride is disabled (bags are blown).

how did you disable the auto ride and does it affect how it drives at all?

 

[Big Mama]

If your air shocks were bad the compressor would run all the time unless it’s dead too. When you use remote start and sometimes just key starting you’ll hear it come on. If it stays on more than about 15 seconds the shocks are usually bad. Lots of guys bypass it with other shocks I like it bc I tow and load the back a lot.

 

[ford141]

how did you disable the auto ride and does it affect how it drives at all?

It was already disabled when I bought it 4 years ago. I can see that the compressor is still there and the blown air shocks are there, but none of it works and there are no lights on. I've heard that installing resistors will disable everything and make sure the computers are happy but I don't have experience with it myself. Sorry I'm not much help.

 

[Big Mama]

You can pull the fuse but you’ll have a dash light. Some are ok with it some aren’t. IMO if something isn’t working back there fix it to work as designed that parts aren’t that expensive