Z55 rear air shock good/bad?

[TollKeeper]

Since you bought new, you can sell your old shocks to Arnott. They pay 50 each, and shipping.

 

[91RS]

I don’t remember if it was covered earlier in the thread but make sure you can hear the compressor running after you turn the ignition on. Sometimes when the bags blow the compressor will run until it quits.

 

[sam03v]

The compressor turns on after about 10 seconds of the ignition on, then shuts off and vents. I guess if the truck is level even with the bad shocks the computer thinks all is well.

 

[91RS]

Then you should be good there. You are correct, it does think all is well if the truck is level.

 

[Joseph Garcia]

Just measure the distances from the ground to the top of the wheel well at all 4 tires, to ensure that all 4 corners are about the same height.

 

[sam03v]

Any suggestions?...The air port came off the old shock and the line won't come out of the port...

 

[sam03v]

I managed to disconnect the hose at the compressor. I then put the end with the broken port in boiling water for a few minutes and was able to pull the port off the hose. The hose is clogged though. I tried running fishing line through it and couldn't get it to go more than 1/4" into the hose(both ends). Also the compressor is spitting out rust water when it kicks on now. So...I don't have high hopes for the compressor or the air lines.

 

[George B]

You need kit 88987900
If you are getting a new compressor and Arnott shocks you need it anyway. Get the GM kit not the Dorman kit.

 

[91RS]

I managed to disconnect the hose at the compressor. I then put the end with the broken port in boiling water for a few minutes and was able to pull the port off the hose. The hose is clogged though. I tried running fishing line through it and couldn't get it to go more than 1/4" into the hose(both ends). Also the compressor is spitting out rust water when it kicks on now. So...I don't have high hopes for the compressor or the air lines.

That sucks but good thing you noticed before you replaced the shocks!

 

[Joseph Garcia]

Replace the compressor and air lines, and you'll be back in business.

 

[sam03v]

You need kit 88987900
If you are getting a new compressor and Arnott shocks you need it anyway. Get the GM kit not the Dorman kit.

Just to recap this is a 2010 Tahoe LTZ. According to Rock Auto's website this part number(88987900) is for 2000-2006 Tahoe's, and an Amazon search says this won't fit a 2010. Is there another kit availabe or will this actually fit a 2010? Thanks.

 

[George B]

Just to recap this is a 2010 Tahoe LTZ. According to Rock Auto's website this part number(88987900) is for 2000-2006 Tahoe's, and an Amazon search says this won't fit a 2010. Is there another kit availabe or will this actually fit a 2010? Thanks.

My Burb is a 2013 and I bought the oem kit 88987900. That kit says it is for the nbs, it doesn't matter gm has used the same connector since they started using air shocks back in the 70's there is one slightly longer line in the kit that works perfect. that kit will fit.

 

[sam03v]

My Burb is a 2013 and I bought the oem kit 88987900. That kit says it is for the nbs, it doesn't matter gm has used the same connector since they started using air shocks back in the 70's there is one slightly longer line in the kit that works perfect. that kit will fit.

Ok. Thanks a lot!

 

[sam03v]

I took the old compressor off yesterday after watching a video. That nut inside the frame rail holding on the bracket is kinda crazy. If you drop the nut in there it's gone! It didn't happen, but I was afraid it might..

update: After removing the compressor I realized that nut doesn't have to be removed, just loosened, then you can wiggle the compressor out.

 

[TollKeeper]

Considering the role this system plays in the ride quality of the truck, its super simple to work on. When I did the chocks and compressor, it took all of 45 minutes to remove everything, and put it back on.

 

[sam03v]

I installed the new shocks, line and compressor. Now I'm getting a "service stabilitrac" message. Any suggestions? I know there is that connector on the passenger side that can get bumped while removing the shock, but it looks okay. Thanks.

 

[George B]

I installed the new shocks, line and compressor. Now I'm getting a "service stabilitrac" message. Any suggestions? I know there is that connector on the passenger side that can get bumped while removing the shock, but it looks okay. Thanks.

There is one on each side. Check both and try to push them together.

 

[sam03v]

Ok. Thanks. I'll check it out tomorrow...

 

[sam03v]

The connector on the driver side frame rail was disconnected! I couldn't see what I was doing, but got it snapped together with one hand. The "Stabilitrak" and ABS error message are now gone. My last concern is that the shocks do not seem to stay pressurized. I can feel them pump up when the compressor comes on with the ignition, but after drivng they are flat. I haven't put a load on the back so maybe that is why they feel flat? The truck seems level. Comments appreiciated... Thanks

 

[George B]

The connector on the driver side frame rail was disconnected! I couldn't see what I was doing, but got it snapped together with one hand. The "Stabilitrak" and other error messages are now gone. My last concern is that the shocks do not seem to stay pressurized. I can feel them pump up when the compressor comes on with the ignition, but after drivng they are flat. I haven't put a load on the back so maybe that is why they feel flat? The truck seems level. Comments appreiciated... Thanks

They should not be flat. You still have a leak somewhere.