Air Shock Boots / Dust Covers Z55 RPO

[krbjmpr]

About to drop in a set of pads on rear brakes, noticed that the boots on the air shocks (Z55) have both torn. Looked at multiple diagrams, thought I had a part number but turned out was for front boot on the struts.

Anybody have a part number for this boot / dust cover? Or maybe perhaps a pn for an 'accordion' type of shock cover that fits? Both still work / hold air / compressor only runs when supposed to.

Incidentally, found a pair of Z55 shocks, AC Delco, for my Yukon off Amazon Warehouse. $100 ea with Prime. Snapped up that one.

SWEET!

Also, Brembo brakes have been acquired / sold by NAPA. Store Manager says not available ATM as packaging is being developed and there WILL be support for (at least) the 2012 Yukon. Hence the reason why just dropping in a set of pads for time being. Rotors are just a few thou of being under spec.

 

[Geotrash]

About to drop in a set of pads on rear brakes, noticed that the boots on the air shocks (Z55) have both torn. Looked at multiple diagrams, thought I had a part number but turned out was for front boot on the struts.

Anybody have a part number for this boot / dust cover? Or maybe perhaps a pn for an 'accordion' type of shock cover that fits? Both still work / hold air / compressor only runs when supposed to.

Incidentally, found a pair of Z55 shocks, AC Delco, for my Yukon off Amazon Warehouse. $100 ea with Prime. Snapped up that one.

SWEET!

Also, Brembo brakes have been acquired / sold by NAPA. Store Manager says not available ATM as packaging is being developed and there WILL be support for (at least) the 2012 Yukon. Hence the reason why just dropping in a set of pads for time being. Rotors are just a few thou of being under spec.

My factory rear air shocks on both of my Yukons don't have boots on them. Never did even before I replaced them. Are you sure that yours are factory stock?

 

[gooffeyguy]

No boots on mine either

 

[swathdiver]

I think the OP is equating the air bladders as being boots. To my knowledge they are not available for replacement, that's something Arnott does.

 

[Geotrash]

I think the OP is equating the air bladders as being boots. To my knowledge they are not available for replacement, that's something Arnott does.

Yup. And if they're torn, they're no longer holding air.

 

[Rocket Man]

Pics of these torn “boots” that are still holding air please.

 

[a4edwin]

^^i see what you did there.

 

[krbjmpr]

Compressor runs when turn key for a few seconds. It will run for longer if situation calls. Ran for 20sec or so last night when filled up. Went from 25miles left to 490miles left.
My Yukon sits level, makes adjustments when add in bunch of weight in back (pressure washer, 5gal fuel can, table saw, sockets, groceries, personal gear) when I go and work on beach house. Can't say I have heard it relieve pressure though.

This is what I am looking at. Pics taken when had brakes inspected (upgrading to LEO or Brembo) and mechanic pointed out 'boots' being torn.
No dash lights or warnings other than parking sensors.

 

[Rocket Man]

Wow. Those are the bags and they’re blown. I say there’s no way those are holding air. You can do a test by starting the truck and after the compressor runs and shuts off, remove one of those air lines and listen for a lot of air coming out. You’ll want the weight of the truck on the tires so use a set of ramps to drive the rear up on if you can’t lay under it and reach it. You can also remove a wheel and put a jack under the axle on one side so the weight of the truck is on the jack. Removing one line will let the air out of both shocks. Those bags should be hard when they’re full of air.

 

[krbjmpr]

Well...@#$%.
At least I was able to find those shocks on Amazon.

Any other PM I should pay attention to while changing shocks? Bumpers (frame) look heavily worn out / cracked. Will do those too.

 

[Rocket Man]

Well...@#$%.
At least I was able to find those shocks on Amazon.

Any other PM I should pay attention to while changing shocks? Bumpers (frame) look heavily worn out / cracked. Will do those too.

Well since you already did the brakes, that’s all I can think of while you’re there. Check the end links on your sway bar. Just a fyi on Amazon, read the reviews and beware of third party sellers on there selling counterfeit parts. I have seen a shady outfit selling what are Arnott part numbers but are visibly not Arnott shocks. Be careful.

 

[krbjmpr]

Hmm, so compressor must be cycling on the circuit breaker. No air out the tubes

Yukon still stays relatively level, despite loads. Good springs. No drivability issues noticed yet.

Saw that there are rebuilt units from Arnott (distributors only, grr), but will they rebuild mine for future use, or would I just sell my old ones now and buy rebuilds in future? I already have a spare set ready to go on.

Does anybody rebuild these things, other than possibly Arnott?

 

[Rocket Man]

Hmm, so compressor must be cycling on the circuit breaker. No air out the tubes

Yukon still stays relatively level, despite loads. Good springs. No drivability issues noticed yet.

Saw that there are rebuilt units from Arnott (distributors only, grr), but will they rebuild mine for future use, or would I just sell my old ones now and buy rebuilds in future? I already have a spare set ready to go on.

Does anybody rebuild these things, other than possibly Arnott?

Arnott is the only one afaik. I would probably either send those in to be rebuilt or hold onto them and have that done in the future since you already have a set, depending on what you bought for replacements. Their new units are not the same quality as original OEM. New OEM units are $$$.

 

[Geotrash]

Hmm, so compressor must be cycling on the circuit breaker. No air out the tubes

Yukon still stays relatively level, despite loads. Good springs. No drivability issues noticed yet.

Saw that there are rebuilt units from Arnott (distributors only, grr), but will they rebuild mine for future use, or would I just sell my old ones now and buy rebuilds in future? I already have a spare set ready to go on.

Does anybody rebuild these things, other than possibly Arnott?

Rock Auto has new GM units with a lifetime warranty for $290. https://www.rockauto.com/en/moreinfo.php?pk=7179908&cc=1433415&pt=7556&jsn=485

I installed these a couple of years ago on both of my XL Denalis and I tow a 7500 lb camper. They're good as new. I also installed the Dorman compressor on my '07 which is a good unit.

 

[Rocket Man]

Rock Auto has new GM units with a lifetime warranty for $290. https://www.rockauto.com/en/moreinfo.php?pk=7179908&cc=1433415&pt=7556&jsn=485

I installed these a couple of years ago on both of my XL Denalis and I tow a 7500 lb camper. They're good as new. I also installed the Dorman compressor on my '07 which is a good unit.

Helluva deal!

 

[Holland]

$100 per shock is a steal. What part number did you use to find those shocks?

 

[Geotrash]

$100 per shock is a steal. What part number did you use to find those shocks?

I looked it up by year, make and model.

 

[krbjmpr]

Amazon has new OEM for $257, free ship with Prime. I just happened to find a pair that were damaged packaging. Found them new, and clicked on subscript available used from...

ACDelco GM Original Equipment 580-1093 Rear Air Lift Shock Absorber https://a.co/d/8rffj2B

 

[krbjmpr]

Just to clarify...
This piece of rubber, that holds whatever amount of air pressure, that is supposed to get firm (inflate)...

...is fastened to the shock at top with a zip tie? That is why I thought was a cover / boot and not the air bladder.

 

[Rocket Man]

Just to clarify...
This piece of rubber, that holds whatever amount of air pressure, that is supposed to get firm (inflate)...

...is fastened to the shock at top with a zip tie? That is why I thought was a cover / boot and not the air bladder.

I’m not sure how those are built, I doubt that’s a zip tie but probably a band clamp. Regardless, those shocks are shot and you can’t buy parts for them.