Air Suspension Problems

[alextruck]

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

[visualghummer]

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

[Spike]

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

[visualghummer]

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

[visualghummer]

Spike,

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

jim

[KenP]

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

[Dedo-man]

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.

[Centerfire]

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

[Spike]

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

S&B Member

[PARAGON]

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.

[PARAGON]

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.

[visualghummer]

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

[visualghummer]

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

[alecs wife]

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

[visualghummer]

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)

[cmb31078]

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

Craig

04 Pewter H2- Lux,nav, air suspension

[visualghummer]

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...

[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...

visualhummer

[Spike]

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

[unaslob]

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)!