What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[08grey]

Getting ready to do the exact same thing on mine. Have the part in my garage. How long did it take you to do? You have to drop the spare to do it, right?

Yes definitly need the spare out. All in all about a hour.

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[HiHoeSilver]

I will try this again in the right thread....

Installed a factory reverse camera mirror.

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Write up?

 

[Doubeleive]

Maybe 20 mins to change. Idk about the spare since i dont have one haha. The hardest part was getting the tube up by the gas cap.

if you take off the bolts that hold the filler tube in place by the gas cap the filler tube can be pulled down and makes it much much easier as the vent tube clips on to the top off the filler tube inside behind the body, then it zip ties in a couple other places also, just cut the ties and put on new ones.

 

[Drok]

if you take off the bolts that hold the filler tube in place by the gas cap the filler tube can be pulled down and makes it much much easier as the vent tube clips on to the top off the filler tube inside behind the body, then it zip ties in a couple other places also, just cut the ties and put on new ones.

Now you tell me haha. Didnt even come to me to just un bolt it while i was under the truck struggling good to know for next time...

 

[MajorJakkov]

Lots of options for lowering with auto ride. You can even keep the auto leveling function in the rear if you choose. Check out my build thread for some info...

http://www.tahoeyukonforum.com/threads/kbuskills-2008-burb-ltz-mod-thread.100141/

I kept the auto leveling system in the back with my 4/6 kit in case I load the truck down with people, luggage, and a trailer.

No service suspension lights on dash... rides great.

i had not seen it in a little while, i remember reading through it once before because I've def checked out your tail light mod ...looks like i need to do some additional reading

 

[Malik112099]

I will try this again in the right thread....

Installed a factory reverse camera mirror.

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You have a DIY for this!?

 

[Da90]

Write up?

You have a DIY for this!?

Added here...

Added a LTZ Suburban to the fleet
https://r.tapatalk.com/shareLink?sh...LTZ-Suburban-to-the-fleet.95403/&share_type=t


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[Doubeleive]

so...just had some really weird shit happen, I went to take my kid to summer camp this morning and I notice as I am driving that the "service suspension system" is on the dic, out of the blue, so I think hmm that's weird the shocks front and rear are pretty new I took care of this in the fall, so I drop the kid off and just do a cursory eye ball off everything looks good so I pull out my little centech code reader it gets nothing must be a system it cant read, so I think well I am close to the dealer that I have a good relationship with maybe they will scan it and tell me if it's a ride height sensor or whatever, I know the service manager pretty well so first we try to see if we can get the pump to kick on by bouncing on the truck etc, nothing... so he whips out a tech2 he keeps behind the counter, plugs it in and every thing imaginable lights up, tpms error, airbag, service stabiltrac, no temp reading on trans, the rpm gauge drops dead, we were both like wow, wth, unplugged it turned the key off and on, plugs tech2 back in same result, unplug tech2 turn key on everything is fine except same message for suspension system. he says it's a communication problem blah, blah, leave it we'll check it out no problem "freebie" well I cant leave it because my backup truck is getting a trans put in so I have nothing to drive in the meantime so I said I will bring it back. I get home hook up my more capable innova 3140g it doesn't read any codes but everything is normal cluster wise and I can read all the live data, fuel pressure, maf, yada yada. so I proceed to check all the level control fuses which are 2/54/58 all are fine, I bleed one rear shock, turn the key and the pump kicks on, fills it up shuts off and the service suspension system error is gone now. no other problems, so I am stumped I think I may go back and have them try another scanner and see what happens. I think my air pump is probably dying I haven't heard it much lately but haven't been paying attention to it either.

 

[kbuskill]

so...just had some really weird shit happen, I went to take my kid to summer camp this morning and I notice as I am driving that the "service suspension system" is on the dic, out of the blue, so I think hmm that's weird the shocks front and rear are pretty new I took care of this in the fall, so I drop the kid off and just do a cursory eye ball off everything looks good so I pull out my little centech code reader it gets nothing must be a system it cant read, so I think well I am close to the dealer that I have a good relationship with maybe they will scan it and tell me if it's a ride height sensor or whatever, I know the service manager pretty well so first we try to see if we can get the pump to kick on by bouncing on the truck etc, nothing... so he whips out a tech2 he keeps behind the counter, plugs it in and every thing imaginable lights up, tpms error, airbag, service stabiltrac, no temp reading on trans, the rpm gauge drops dead, we were both like wow, wth, unplugged it turned the key off and on, plugs tech2 back in same result, unplug tech2 turn key on everything is fine except same message for suspension system. he says it's a communication problem blah, blah, leave it we'll check it out no problem "freebie" well I cant leave it because my backup truck is getting a trans put in so I have nothing to drive in the meantime so I said I will bring it back. I get home hook up my more capable innova 3140g it doesn't read any codes but everything is normal cluster wise and I can read all the live data, fuel pressure, maf, yada yada. so I proceed to check all the level control fuses which are 2/54/58 all are fine, I bleed one rear shock, turn the key and the pump kicks on, fills it up shuts off and the service suspension system error is gone now. no other problems, so I am stumped I think I may go back and have them try another scanner and see what happens. I think my air pump is probably dying I haven't heard it much lately but haven't been paying attention to it either.

Perhaps the "dump valve" (exhaust valve) in the compressor has gone bad.

If you added weight to the back and it lifted to compensate for it but could not release the air when the additional weight was removed then it would...

A. Not turn the compressor on at initial start up until the air was released.

B. Would set a service suspension light.

C. Would turn the service suspension light off when you released the air manually.

My bet is that if you added weight to the back, the air compressor will turn on and lift up but will not release the air when the weight is removed, which will set the light on the dash again in short order.

As far as the rest of the dash acting up when the Tech2 is plugged in... my guess is maybe there is something wrong with the Tech2.

 

[mikeyss]

so...just had some really weird shit happen, I went to take my kid to summer camp this morning and I notice as I am driving that the "service suspension system" is on the dic, out of the blue, so I think hmm that's weird the shocks front and rear are pretty new I took care of this in the fall, so I drop the kid off and just do a cursory eye ball off everything looks good so I pull out my little centech code reader it gets nothing must be a system it cant read, so I think well I am close to the dealer that I have a good relationship with maybe they will scan it and tell me if it's a ride height sensor or whatever, I know the service manager pretty well so first we try to see if we can get the pump to kick on by bouncing on the truck etc, nothing... so he whips out a tech2 he keeps behind the counter, plugs it in and every thing imaginable lights up, tpms error, airbag, service stabiltrac, no temp reading on trans, the rpm gauge drops dead, we were both like wow, wth, unplugged it turned the key off and on, plugs tech2 back in same result, unplug tech2 turn key on everything is fine except same message for suspension system. he says it's a communication problem blah, blah, leave it we'll check it out no problem "freebie" well I cant leave it because my backup truck is getting a trans put in so I have nothing to drive in the meantime so I said I will bring it back. I get home hook up my more capable innova 3140g it doesn't read any codes but everything is normal cluster wise and I can read all the live data, fuel pressure, maf, yada yada. so I proceed to check all the level control fuses which are 2/54/58 all are fine, I bleed one rear shock, turn the key and the pump kicks on, fills it up shuts off and the service suspension system error is gone now. no other problems, so I am stumped I think I may go back and have them try another scanner and see what happens. I think my air pump is probably dying I haven't heard it much lately but haven't been paying attention to it either.

I just had a very similar thing happen to mine, and it turned out to be the compressor. I already replaced all the shocks and struts earlier this year, then I'd get random service suspension warning every few days. Then it just stayed on, and during that time the compressor worked when it felt like it, then just stopped altogether.

 

[Doubeleive]

Ya the pump is my primary suspect, I was hoping the tech2 would verify because I hate random issues so I'll have to just wait and see now or do some more testing later today, I called the dealer back and told him I think his tech2 is wacky there's no way I have all that going on without getting codes and there is none.

 

[Doubeleive]

I just stood on back bumper and autostarted the truck and the pump didn't come on I weight 217lbs so I would think that would make it come on?

 

[kbuskill]

I just stood on back bumper and autostarted the truck and the pump didn't come on I weight 217lbs so I would think that would make it come on?

I could be wrong but I don't think the pump gets power until the key is actually in the run position just like the radio and other things don't turn on until the key is in.

If the compressor is functioning properly then the compressor should turn on for a few seconds after starting the truck with the key.

After you shut the truck off if you stand near the gas tank filler you should hear the compressor dump a little and stop and dump a little and stop... it will do this multiple times before it stops. It should dump the air everytime the truck is turned off.

 

[Malik112099]

Added here...

Added a LTZ Suburban to the fleet
https://r.tapatalk.com/shareLink?share_fid=17772&share_tid=95403&url=http://www.tahoeyukonforum.com/index.php?threads/Added-a-LTZ-Suburban-to-the-fleet.95403/&share_type=t


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thanks for the write up. Doesn't look like it will work in my 07 Denali tho.

 

[M1Gunner]

Just a quick wash and detail.

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Love the Burban man, what lift do you go with on that beast?

 

[swathdiver]

so he whips out a tech2 he keeps behind the counter, plugs it in and every thing imaginable lights up, tpms error, airbag, service stabiltrac, no temp reading on trans, the rpm gauge drops dead,

That normally happens when someone connects the Tech2, powers it up and then starts the truck. Don't ask me how I know!

 

[Doubeleive]

I could be wrong but I don't think the pump gets power until the key is actually in the run position just like the radio and other things don't turn on until the key is in.

If the compressor is functioning properly then the compressor should turn on for a few seconds after starting the truck with the key.

After you shut the truck off if you stand near the gas tank filler you should hear the compressor dump a little and stop and dump a little and stop... it will do this multiple times before it stops. It should dump the air everytime the truck is turned off.

I have a aftermarket viper system installed, when I autostart everything comes on radio, ac, lights etc. but at any rate I have never heard it purge air, I just went out and put the key in and twice in a row it filled with air and then stopped after the second try, I sat there and listened by the pump and it's not purging any air unless it's doing it really slow,could put the hose in some water and see if it makes bubbles I guess

 

[Doubeleive]

That normally happens when someone connects the Tech2, powers it up and then starts the truck. Don't ask me how I know!

so it makes it throw every gizmo crazy? makes the rmp gauge drop to 0?, seems rather strange to me

 

[kbuskill]

I have a aftermarket viper system installed, when I autostart everything comes on radio, ac, lights etc. but at any rate I have never heard it purge air, I just went out and put the key in and twice in a row it filled with air and then stopped after the second try, I sat there and listened by the pump and it's not purging any air unless it's doing it really slow,could put the hose in some water and see if it makes bubbles I guess

Mine is very noticeable when it dumps the air but mine is a Dorman replacement pump.

There is/was a common problem with a white wire leading to the dump valve getting corroded and causing the exhaust valve not to work.

 

[Doubeleive]

now I'm really stumped went out with some water and turned the key on and service suspension light is on again, I didn't even drive it, turned the key off manually purged both shocks, pump fills them up, error is still on now.....
edit went out and pulled fuse 2 & 54 again error went away, doesn't clear from fuse 58 (40a)
so I presume it's going to keep coming back on, at least that will make it easier to find