H2 with only 1,300 miles and now the Air suspension is again having problems... First time, it was a connector on the compresser... Now it looks like the bladder on the driver-side has a leak... each morning the truck is tilted 4-6" down on the left side... Kind'a funny looking from the back side...

Just want to know if others have experienced the same problems... and how the dealership dealt with it... is this a common problem on the H2 Air suspension...

visualhummer

H2 with only 1,300 miles and now the Air suspension is again having problems... First time, it was a connector on the compresser... Now it looks like the bladder on the driver-side has a leak... each morning the truck is tilted 4-6" down on the left side... Kind'a funny looking from the back side...

Just want to know if others have experienced the same problems... and how the dealership dealt with it... is this a common problem on the H2 Air suspension...

visualhummer

I have heard story's about people loosing their airbags off-roading and, the mechanic told me that springs are better for the wild.

Front Locker, Stealth winch, 37" Super Swampers SSR,low center of gravity = Ultimate H2

My business neighbor experienced the same thing. His is 10 months old has less then 500 miles on it and the only off roading would be the gravel lot to the back storage buliding.

Mike

Did a search and could not find what I was looking for, but this has come up before. You are not experiencing an isolated incident, unfortunately.

Black Lingenfelter Lux

i have heard about alot of problems with the airbags....

hey got a pick of the h2 dropped in one corner... I bet that would look funny.

unaslob

Corsa Sport exhaust(offroad 'tip'), Gobi rack w/ lights & w/roof mounted tire w/ ladder, Warn Winch with rear power, Dual Wolo Airhorns w/ lanyard valve, Hadley Aircompressor 130PSI, 14" airtank, front and rear quick disconnects for air, Cobra 75 WX CB, Dual 4' Firestik fiberglass whips, front tinted windows, 7" Homer Simpson decal (teehee)!

Maybe now he can add a cadillac escalade grill and have someone to ride around with...

Craig

04 Pewter H2- Lux,nav, air suspension

Here's a photo just after 4 hours of sitting....

Attachment didn't work... Here's the URL.
http://www.visualg.com/truck01.jpg

It's got the gangsta lean.... Or it is just getting sleepy Let us know what they say. I have the air suspension also and I am curious.

Craig

04 Pewter H2- Lux,nav, air suspension

Hmmm very interesting. I am taking my 04' in tomrw for this exact reason. The tech's advising that they havent herd of this problem before! Im having a problem believing that one!
Ill let you know how things work out. by the way, mine does not have the optional air susp. adjusment.

Well, the story just gets better... The truck went into the shop for 4 days... the rep stated they worked 9 hours on it and came to the conclusion that it was as simple as recalibrating the air suspension, as it looks like the previous dealership did not recalibrate after installing a new compressor...

Fine, I'm go with that... I get the truck back after 4 days... only to have to start leaning again the day after I get it back...

Same side, etc... but now the air pump just keeps on recycling and doesn't stop...

I call up Hummer CS, and explain that I now have to take it into the shop for the third time, and explain I will pull the lemon law if it is not fixed this time...

I hit the dealership this morning... drop off the truck... just got word from them... it's fixed, it was a module now.. Gotta love the hit and miss mechanics...

I'll pick up the truck tomorrow... and let's see if it's fixed...

Now the dealership is saying it's a torsion bar adjustment. I'm leaning roughly 1.5" in the left rear... Will the adjustment actual take this out.

GM quick fix #95:
Try letting the air out of the passenger side rear tire until the vehicle is level

2003 Yellow H2, Lux Series, Air Suspension, Front Brush Guard, Rear Tail Lamp Guards, Helo Maxx 8 Chrome Rims, MC2 Chrome Billet Locking Fuel Door, MC2 Chrome Hood Handles, MC2 Chrome Hood Latches, Chrome Billet Hummer Logo Hitch Step

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by visualghummer:
H2 with only 1,300 miles and now the Air suspension is again having problems... First time, it was a connector on the compresser... Now it looks like the bladder on the driver-side has a leak... each morning the truck is tilted 4-6" down on the left side... Kind'a funny looking from the back side...

Just want to know if others have experienced the same problems... and how the dealership dealt with it... is this a common problem on the H2 Air suspension...

Yes we have also problems. The Display shows "Service Air Suspension" and after that the h2 drops down on the rear axle, the air compressor gets no voltage and we think it is aproblem to the air control module because all the valves except.the one controls the airstream also not powered by an voltage.
Greetings from Overseas Germany Alex
visualhummer<HR></BLOCKQUOTE>

Overseas Germany Alex,

Good news... They replace the ACM on mine and the SAS error went away. Yet, it was still leaning to one side.. Then the next trip to the dealership and the adjusted the torsion bar... and that did it.. The truck hasn't had a problem since.

regards,
Jim (Boca Raton, Florida)

visualghummer,
wish you a nice time with your truck. I have ordered also the ACM but need a little time to come overseas. Mine is still in the workshop. Thanks for the information about the torsion baradjustment i will throw a look also about that.
Regards from "Homeland of beerbrewers" Germany.
Alex

Alex,

Please advise me on the outcome after the new ACM is installed.

One thing I noticed, it seems that the compressor runs a lot... I can hear it a stop lights, etc.... Not like the Ford Expedition that I had that had Air Susp. in it... That Compressor pumped it up and it stayed that way for days... I wouldn't hear the compressor...

It's not that way in the Hummer, I hear that compressor working all the time... Same on yours?

regards,
Jim

One of the most complained about problems at my local dealer is a "noise coming from the back of the truck". I kid you not. These folks either forgot they had or did not know about the air suspension.

As I understand, the air will kick on anytime the truck feels it is not level and release when it is. Thus you hear it often.

The quick fix, and I need to mention this on another thread, is to get a louder exhaust .

Black Lingenfelter Lux

Black Lingenfelter Lux,

I like your Quick Fix... in fact, I'm working on getting that exhaust tomorrow...

And any good Air cleaner suggestions, would like to change that out as well, then down the road, headers too...

PhilD, thanks... it's going in for the 3,000 mile oil change, I'll tell the dealer to do it...

Regards,
Jim

They know they have an issue with the air suspension. Mine was idling in my driveway and I was outside of it and it would continually air up and then air down. It's even done it after cutting the ignition off, apparently all night long as it ran the battery down.

They have new programming, some new sensor, etc. to do but I don't think they really know for sure why it does this.

paragon,

You're telling me they now have a Fix? did you get the fix?... Is there a SB on this issue and fix?

jim

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Dedo-man:
The tech's advising that they havent herd of this problem before! Im having a problem believing that one!
<HR></BLOCKQUOTE>

No kidding!!! What a total load of crap. There have been numerous TSBs on this problem. GM had to buy my first H2 back because of this very problem. So it's extremely unlikely your tech hasn't heard about it.
From looking at your picture it looks like you have a bad sensor.

S&B Member since '03

DRTYFN,

They replace a couple of parts, ACM, sensors, etc... The Error went away after that, but the lean was still there... maybe not as bad, but still there.

After they adjusted the torsion bar, it level right out (at least that's what they said they adjusted)... no problem since...

So you got GM to replace your hummer because of this?... I was about to try that, had the lemon law documents on my desk ready to fill out. But they fixed in on the 4th time.. so I dropped it... but believe me, if it happens again, this Hummer is going to be labeled as a lemon ASAP...

how long did the whole process take?

jim

No new fix that I know of. Mine still airs up and down, just not as often. I keep complaining every time I go back and the dealership tries something new.

paragon,

So yours does the pummping up... then a few clicks(knocks) then a short release of air.. All random, never the same pattern of noises, right?

I'm actually going to record mine with a tape recorder, because the dealership never seems to be able to reproduce the issue/sounds. Next visit, I will have the recording in hand. But I'm prepared for them to say this is normal.

As in the programmer world, we call this a undocumented feature (real world, "A BUG" in the software).

jim

Actually mine is not that random, but that is exactly what it does. Last time I was in with it, I left it idling and we stood there for a few minutes and the Service Rep heard it cycle twice for no reason. There is no reason for it to cycle when the vehicle is just sitting there.

It's not normal. I have an XL Denali with rear air suspension and it only cycles when there are changes to the weight in the rear, ie adding a trailer or putting things in the back.

What kind of programming and where? Just out of curiousity

Paragon,

I totally agree... It's not normal.. I had a Expedition with air suspension, it would go days without clicking on... But if all the hummers do it, the dealer is going to say it's normal...

WRT: programming... I develop and maintain a few web sites... java, Cold Fusion, Php and python..

regards,
jim

Mine is doing the same thing. If I start it and get out and walk around I hear some clicking, than the compressor will kick on. While I am driving the compressor seems to go on for very short bursts like 3 or 4 seconds and then stop for a few seconds and than back on for 3 seconds. It's finally going in tomorrow morning for that , drivers seat memory, power fold mirror feature and an oil change.

S&B Member

Spike,

Can you post an update when you get yours back? Would love to know if they fix it...

jim

visualghummer,
Will do, hopefully I will get it back tomorrow sometime. I'll let you know either way.

S&B Member

Vis,
One thing that really helped smooth the way for my case was the fact that after 4 months of ownership my H2 was in the shop for 62 days. I was more familiar with my loaner than my own rig. The law states that more than 30 days of down time in one year qualifies the vehicle to be considered for lemon status. But you might want to check the lemon law requirements in your state.
My rig was one of a kind, but I still loved it. I love my second one even more. I haven't even shot off a mirror on this one yet.

S&B Member since '03

Well just got back from the dealership. For the record it was not the dealership I bought my H2 from. They changed the oil, fixed the power fold mirror feature, they had to order a new power module for the front seat to fix the memory seat with Alzheimer's, and were unable to duplicate my complaint regarding the compressor running frequently. I will point it out to them again when I go back to have the seat module installed.

S&B Member

Let me just add that when you take your H2's in and if the dealer says they "can't reproduce the problem", it is very, very important to tell them about it and ask to have it fixed each and every time you take it in. I just cannot stress how important it is to get it all down on the paperwork. And if they don't have the problem listed on your paperwork when you go to pick your H2 up and just try to tell you about it instead, verbally intead of on paper, as happened to me at least a few times, then just tell them you'll take the loaner back and tell them to address the issue and call you when they've got it taken care of, or not taken care of as the case may be...just make sure that it is listed on the paperwork!!! "Cannot reproduce the problem" four, five, six times does not reflect well on GM if and when you ever need the lemon law.

Hi from Overseas, we fixed it today. Forget all the memories about the pcm or acm. The only thing which will fix it is to reinstall the rear sensors, mount on the frame of the axle. Dismount it and move the potenialmeters in every direction to clean it up. Reinstall it, bring the Truck in the right height with the axle on the ground, start the engine and the compressor will do his work, the service air suspension light go off and a dtc is set only in the history of the pcm. delay this with a scantool (not necassaery). The rear sensors are made of plastic ( not a joke) and when I will go out in the fields with my one, I have two spare part sensors in the trunk!!!!!!!
Best wishes to GM for installing 5$ Dollar Plastic goodies in a area where a rock or other things in offroad doin, not need much work to kill it. Maybe the next Generation (H3) has also plastic wheels, maybe there cheap to get in Mexico.

Check the "all time running compressor", start the engine, go off the truck, shut the door(s), and the air suspension will levelling the truck. If the airtank is fully loaded and the truck is levelled, the compressor shut down and you don't hear any air noises, maybe it levels for second or two again but then the compressor isn't running until you take a step at the sidebars or something which will unlevel the truck. This airsuspension is controlled by two seperatly mounted rear sensors, each side had it own, thats totally indepent and different to the other trucks, maybe the range rover are little familiar to this system. So "ken P" are on the right way with his comment, but when you check it like I discribe after a minute or so the compressor will be off. Send me the bucks for the "louder exhaust" you dont need, in my bank for this tricky tip!!!!!!!!!

Easter Greetings from Bavaria Germany, Oktoberfest State

alextruck,

Did you do this work yourself? Or did a dealership do this for you? If a dealership, did they have a tech bulletin on this issue?

jim