Autoride suspension help

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George B

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I did a little more testing tonight just for giggles.
Running the compressor and taking the pressure up to 150 I found I have some substantial leaking in the shocks. I noted the pressure still drops from that point down to about 22 and then holds there. When the pump is running I noted quite a bit of “blow-by” out the exhaust its hard to tell if it is leaking down through the vent solenoid but I suspect it is. At least until 22 psi and then it stays there even with the vent solenoid commanded on. The only way to drop it lower is to pull the air lines off the shocks. Then it goes down to 3 psi. I don’t understand why it stays pressurized unless the drier is plugged in some way. I think the small size of the system is the reason for the rapid leak down to 22 psi due to the shocks and suspected leak back through the vent valve. It is hard to get from the pump command screen to the vent command screen fast enough to hear the vent work because the pressure is gone by then. If I had a fitting I would pressurize it with my air compressor and search for the leak that way.
 

George B

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True to form for me. I got cold feet about the Arnott shocks after reading some reviews.
First concern is the “remanufacturing” process. I am questioning if they actually replace the seals and fluid in the dampening portion or if they just test that portion and replace the air bags. And I wonder about the air line location compared to mine. I have heard of issues with the lines not reaching.
I cancelled that portion of my order and am considering the Delco OE shocks instead.

Thoughts?
 

91RS

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They do not as far as I know, they only replace the air bags. That is why I only recommend the OE parts or delete the system and go with a quality shock like the Bilstein 5100.
 

George B

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Rocket Man

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True to form for me. I got cold feet about the Arnott shocks after reading some reviews.
First concern is the “remanufacturing” process. I am questioning if they actually replace the seals and fluid in the dampening portion or if they just test that portion and replace the air bags. And I wonder about the air line location compared to mine. I have heard of issues with the lines not reaching.
I cancelled that portion of my order and am considering the Delco OE shocks instead.

Thoughts?
They sell their own design of new shocks too, AS-3430. These aren’t rebuilt. All their products are lifetime warranty too. Arnott is highly regarded in the air suspension industry and in fact just bought out Accuair which was huge in the bagged custom vehicle world. I bought some Bilstein rear air shocks for my 02 back when they were available from Arnott and have been running them for 3-4 years along with their compressor. I would go with their new shocks myself or go OEM but you’ll pay more for OEM.
https://www.arnottindustries.com/pr...swb-lwb-gmt8xx-9xx-w-magneride-autoride-lt-rt
 

Rocket Man

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I forgot to mention I ran Arnott air shocks on my bagged Harleys for years too with zero issues. I did have a problem with a “spoofer” on the fronts on my 02 Denali ( the fronts don’t have electronic damping like OEM so they use a resistor pack that plugs into the wiring harness so you don’t get a dash light) and their warranty department had a new part shipped out the next day after I called them so their customer service is excellent. They sell remanufactured shocks for exotics like Maybach etc too, pretty highly regarded like I said. In the bagged motorcycle world they’re considered top of the line with the products they design, engineer and build.
 

George B

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They sell their own design of new shocks too, AS-3430. These aren’t rebuilt. All their products are lifetime warranty too. Arnott is highly regarded in the air suspension industry and in fact just bought out Accuair which was huge in the bagged custom vehicle world. I bought some Bilstein rear air shocks for my 02 back when they were available from Arnott and have been running them for 3-4 years along with their compressor. I would go with their new shocks myself or go OEM but you’ll pay more for OEM.
https://www.arnottindustries.com/pr...swb-lwb-gmt8xx-9xx-w-magneride-autoride-lt-rt
I was looking at the AS-3430 and noticed on their website that it appears to be a passive shock with custom valving and not an active Z55 replacement with OE dampening. I think the ring on the top is a resistor.
 

Rocket Man

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I was looking at the AS-3430 and noticed on their website that it appears to be a passive shock with custom valving and not an active Z55 replacement with OE dampening. I think the ring on the top is a resistor.
They also have the AS-3436 which has magneride electronic damping if you want it. I would think people are staying away from that though with the stories of the electronic damping locking up on the OEM shocks and making it ride like a rock. You have choices George! Arnotts rebuilt OEM, new non magneride, new magneride, new OEM with magneride...and there’s other aftermarket ones too. My Bilsteins are non magneride and I don’t miss it but I never had it because my shocks were blown when I bought the truck. What are the rest of you guys on the GMT900 platform running?
https://www.arnottindustries.com/pr...let-gmc-suvs-swb-lwb-gmt9xx-w-magneride-lt-rt
 

George B

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I was looking at the AS-3430 and noticed on their website that it appears to be a passive shock with custom valving and not an active Z55 replacement with OE dampening. I think the ring on the top is a resistor.

Also confirmed in a chat.

upload_2021-2-24_9-3-21.png
 

Doubeleive

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I just went ahead and ordered the AS2708 remans and will give them a go.
they made a design change a good while back on the 2708's I think the old design is where the negative reviews stemmed from. I have had the 2708's on for 50,000 miles now with no problems
the new design is partially re-manufactured the whole top piece is different, the "bag" will wear out eventually that is the weak point oem or not, replacements won't cost me anything.

* you may want to order or get a air line set, I did find that the drivers side line will be stretched beyond it's length if the shock is fully extended, my solution was to install one of the longer pieces on the drivers side between the shock and "T" where the lines connect near the pump this gives it more than plenty of room, passenger side is not a problem.

and do not order the Dorman air line set I couldn't get the lines to come apart even though it looked like they should come apart it appeared to be a one piece design.
 
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George B

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they made a design change a good while back on the 2708's I think the old design is where the negative reviews stemmed from. I have had the 2708's on for 50,000 miles now with no problems
the new design is partially re-manufactured the whole top piece is different, the "bag" will wear out eventually that is the weak point oem or not, replacements won't cost me anything.

* you may want to order or get a air line set, I did find that the drivers side line will be stretched beyond it's length if the shock is fully extended, my solution was to install one of the longer pieces on the drivers side between the shock and "T" where the lines connect near the pump this gives it more than plenty of room, passenger side is not a problem.

and do not order the Dorman air line set I couldn't get the lines to come apart even though it looked like they should come apart it appeared to be a one piece design.

Thanks! Got a pic of that shock and line placement? I have quite a bit of extra line on both sides. Did they move the connector? What line kit did you get?
 

Doubeleive

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Thanks! Got a pic of that shock and line placement? I have quite a bit of extra line on both sides. Did they move the connector? What line kit did you get?
I bought the oem kit 88987900, a lot of places are charging stupid money for it, it's $26 from rockauto
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.
8898.JPG
 

Rocket Man

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I bought the oem kit 88987900, a lot of places are charging stupid money for it, it's $26 from rockauto
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.
View attachment 271726
Thanks for that pn. When I’ve looked on RA for a hose kit for my 02 Denali, all it shows is Dorman and a Monroe kit that looks like junk. I just ordered the OEM one. It will be nice to put new lines on.
 

Doubeleive

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Thanks for that pn. When I’ve looked on RA for a hose kit for my 02 Denali, all it shows is Dorman and a Monroe kit that looks like junk. I just ordered the OEM one. It will be nice to put new lines on.
the kit will look just like the pictured Dorman, but it comes apart the Dorman one did not come apart for me anyway and I just wanted to use the one line that had a couple extra inches.
 

George B

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I bought the oem kit 88987900, a lot of places are charging stupid money for it, it's $26 from rockauto
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.
View attachment 271726
Stupid Snail Mail Shipping will take over two weeks. Sucks!
 

Rocket Man

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Stupid Snail Mail Shipping will take over two weeks. Sucks!
I got shipping info for mine just now, delivery says 6 days from now. Maybe because you live in the frigid part of the country?
 

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