Avy LTZ w/ RC 2" Level, Autoride/Level not working....

[Canuck-Avalanche]

Hello all;

I know I'm not driving a Yukon or Tahoe but i was hoping some of the knowledgeable users here could help me out since there is so much info here.

I used the search and poked around; however need further guidance hence the post....

Some are saying their install is working fine, others have modded to work while others still say that it CANNOT be done while maintaining these things.

Please help me!

Ive checked the Fuse, In my 2009 its a double link fuse, position 59 i think. Its in tact..... When i start the truck i hear a solenoid "Click" but the compressor doesn't run. It used to after startup.

Also i went to camp with some buds and loaded up the bed and 4 adults, rear was sagging bad. Never levelled off....

I don't want to piss away more $$$ at the dealer if i can avoid it.

Maybe just a coincidence that the compressor died after the lift; but not holding my breath!

Have a trip next week where i plan to throw my motorcycle in the bed but can't with the way it sagged with camp stuff.....


Thanks for any guidance.

 

[felixgun]

I wish I could help but I don't know what it could be. Not long ago I had an avalanche LTZ with a 2.5/1.5 level and the autoride worked great. I didn't do the install though so not sure if anything was done by the mechanic/installer to get it to work correctly...

 

[Canuck-Avalanche]

i just jacked the rear end up thought maybe i could use jumpers to test the pump but its way too crowded in there; id have to remove it....

tried starting the truck on the jack cause its all of kilter to see if the compressor would kick on, it did not...

 

[Canuck-Avalanche]

update: Tried jumping the light blue wire on the pump. Compressor did not run. i now have the Check air suspension message on the DIC (no message before).

Guess its going to the dealer after all......

 

[Ben]

get a quote first because the arnott compressor is fairly cheap and really easy to install, 3 bolts, 3 plugs.

 

[Canuck-Avalanche]

update: harness was broken off in one of the rear shocks, required new harness and shock. Dealer/GM subsidized the cost so i paid 1/2 the bill. Ive been told its working now. Wife picked it up on the way home so i haven't driven it.

Does the compressor run at every startup? Or just after a few days/when weighted. Ive never paid much attention until it wasn't working.....


Have a trip planned with my motorcycle this weekend coming up and need to toss it in the bed, couldn't wait to order arnott/bilstein components...

 

[63Blackseries]

When i had my 09 LTZ, On every start up the compressor kicked in so i guess that is normal.

 

[Canuck-Avalanche]

When i had my 09 LTZ, On every start up the compressor kicked in so i guess that is normal.

I'm going to pop out there and see if it kicks on.

---------- Post added at 09:20 PM ---------- Previous post was at 09:12 PM ----------

Nope. Didn't run. Rear end seems as though it is sitting lower than the front. tried standing on the bumper to weight it. Nothing.

---------- Post added at 09:22 PM ---------- Previous post was at 09:20 PM ----------

i have the mind to call the dealer in the morning for an earful but don't want to do that if the front level kit is the cause of the problem.

 

[Ben]

Each rear shock has an air bag at the top of the shock and a height sensor, when the height sensor is triggered the compressor will kick in. It normally kicks on during startup because the psi has dropped.

 

[Canuck-Avalanche]

i think my next step is going to be to remove the front height bars and make them longer, see if that fixes it.... they are plastic, the metal is rusted and they are a PITA to remove....Maybe i can buy new ones from dealer?

Surely the dealer would have made sure the compressor works when they put on the new shock?

 

[Ben]

Depends on the dealer and your relationship with them to be honest... I just changed mine myself and it hasnt kicked on yet but my ride height has not needed it to either...

 

[Canuck-Avalanche]

Depends on the dealer and your relationship with them to be honest... I just changed mine myself and it hasnt kicked on yet but my ride height has not needed it to either...

hoping changing the height rods for the front sensors will get me up and running. i would just send it back to them tomorrow but if this is the problem i will be out the diagnostic fee and it still won't be functional...

When i start the truck i still hear the same audible click at the rear, but the pump doesn't run. Don't know whether this click is normal; or if the computer is saying the rear needs air and the click is the system trying to air it up but the compressor is shot.

Do you recall if yours clicks every startup?

 

[felixgun]

The compressor kicks on every single time you get in the vehicle and turn it on. I've owned 3 auto ride vehicles and it's done it on all of them flawlessly.

 

[Canuck-Avalanche]

thanks. Found a thread by Marioski where it sounds like he was having a similar issue.

He was going to try extending the sensor bars or adding a lift block to the rear but the thread was never updated....

His compressor still ran though... i tried to PM him but I'm not allowed yet because of my uber Nooby status

---------- Post added at 10:46 PM ---------- Previous post was at 10:44 PM ----------

Felix; your lift is front and rear? You have the auto level in your SLT and don't have any issues. i do wonder if it is because the front is up 2" and the rear is stock, but i feel it shouldn't matter.

 

[Canuck-Avalanche]

UPDATE:

Popped off the front sensor rods of the sensor and manually set them 1-2" higher to simulate extended rods. Turned the truck on; nothing. Just a click.

Took the truck into the dealer after reconnecting the rods and they had a look at it. Compressor was shot. Covered under my warranty luckily.

Everything seems to be working great now....

Thanks to all with suggestions.

 

[felixgun]

thanks. Found a thread by Marioski where it sounds like he was having a similar issue.



He was going to try extending the sensor bars or adding a lift block to the rear but the thread was never updated....



His compressor still ran though... i tried to PM him but I'm not allowed yet because of my uber Nooby status

---------- Post added at 10:46 PM ---------- Previous post was at 10:44 PM ----------

Felix; your lift is front and rear? You have the auto level in your SLT and don't have any issues. i do wonder if it is because the front is up 2" and the rear is stock, but i feel it shouldn't matter.

When I owned my 07 Avalanche LTZ my leveling kit was 2.5 front and 1.5 rear. My current '11 Yukon SLT is non-AutoRide. I was referring to my old avalanche that I just traded in for the Yukon. I had 0 issues with the avalanche though. LTZ's sit lower in the rear bc of autoride. Non autoride vehicles sit a little higher. I originally just had 2.5" up front on the avalanche but noticed the rear end was lower then the front end, so that's when I added the 1.5" rear coil spacer. Once I did that my truck was perfectly leveled. And autoride worked flawlessly.

 

[Canuck-Avalanche]

update; compressor fixed my issue. All seems to be working well; however i have noticed that it seems that my truck ride height; particularly in the rear isn't the same from the left side to the right....

Anyone else ever notice this ? I would have to get out the tape measure but it might be as much as 3/4".....

 

[felixgun]

Gas tank. Infamous Chevy lean