Re: Rear Air Suspension Problems
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Re: Rear Air Suspension Problems
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Re: Rear Air Suspension Problems
Ok this is the deal i have a 2003 hummer h2 i used to like it now its getting on my nerves with the damn sensors i have a tech 2 i bought so it pulled these codes up in the history first one is
1 C0631 RIGHT REAR POSITION SENSOR 2ND IS C0712 LEVEL CONTROL COMPRESSOR RELAY CIRCUIT I LOVE A PART NUMBER FOR THAT SO I CAN BUY IT 3RD THE MOST FAMOUS ANNOYING ONE IS CO711 LEVEL CONTROL AIR PRESSURE SENSOR STAYS ON ALL THE TIME AND LIGHT FOR HEIGHT CONTROL FLASHES NON STOP AND MY RIGHT IS 3.65 SENSOR VOLTS LEFT IS 2.53 SENSOR VOLTS THE LEFT ONE GOES UP N DOWN LIKE CRAZY WITH THE SCANNER WHILE DRIVING SO WHAT SHOULD I DO FIRST PLEASE Do you guys think i need air bags too or just fix the sensors |
Re: Rear Air Suspension Problems
I would start by replacing the relay. It is located below the brake master cylinder on the 03 model year just above the frame rail(dont know the part #). Then try to clear all codes. On level ground with the engine running check your level sensor data again, they should read between 2.5 and 3.5 volts, any lower or higher and they are not in the proper range when sitting still and level. If the right one still is reading high you can try to adjust it but will likely need to be replaced. If you do replace it you will then require a trim height learn procedure.
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Re: Rear Air Suspension Problems
How often should the compressor kick on? Mine comes on every 5-10 minutes.....I can't really tell if it is because of a leak, or that it is just doing it's job.
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Re: Rear Air Suspension Problems
Mine only releases air sometimes. It happens when I park and turn off, I can hear air coming out. When I come back it will be sagging. Only once while driving did the service air come on and it sounded like the compressor was continualy running. It stopped after several minutes of driving. I checked the bags and I don't hear or see any leaks. It doesn't make sense that the bags would be leaking because once they start to leak they are not going to seal themselves back up and not leak other times. Any ideas?
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Re: Rear Air Suspension Problems
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Re: Rear Air Suspension Problems
This makes me think that it is not a leaking bag but something like a valve or sensor etc. My compressor was replaced to the newer style back in 04 and seems to be working fine. Any thoughts?
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Re: Rear Air Suspension Problems
Why don;t you guys just take out the stock bags, add factory or better yet aftermarket 2" taller coil springs. Than add a set of adjustable firestone bags. you can get teh in cab controller and you can raise lower for increased weight or added height when wheeling. Those bags are more reliable than teh stock bags and inlfate/deflate way quicker. ...just a thought.
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Re: Rear Air Suspension Problems
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Re: Rear Air Suspension Problems
Thanks for the suggesstion but I'd rather keep it stock. I am at 81k now and have not had any issues so I would rather just figure out the problem. Any ideas?
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Re: Rear Air Suspension Problems
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Go to your dealer and have them figure out. GM had progarm updates to the earlier models. I was one of the first 03's to have my air bags go....and if you're in the middle of bumfu*#, you are SOL. I had to cram a 2x4 in both sides and had a nice 4 hour ride back to Denver since it was a Sunday and could not get a flatbed anywhere. My reccomendation, pay the dealer thier service fee and see if any updates are available. you have some high miles on that H2 and things are going to start to go. This "I'm at 81K without issues" may be the start of replacing that whole system one by one. Teh aftermarket way is much cheaper/easier to go than replacing stock....unless the budgett isn;t a factor. ...my 2 cents for what it's worth. |
Re: Rear Air Suspension Problems
I do plan to have it checked out but the reason for posting was to get an idea of what might be wrong with it before I did. Usually these things don't just happen to one car. It might just be a simple and relativly innexpensive fix that can buy me another 20k and I can take care of it for just cost of parts. I'd rather not replace the entire system w aftermarket without knowing if I can fix it easily. I saw another poster on this forum jump the gun and tear the entire system out and put springs just to find out that he could hasve probably replaced one part and fixed it. Thanks again. It might be an option down the road.
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Re: Rear Air Suspension Problems
Who did the lift ?
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Re: Rear Air Suspension Problems
How hard is the removal and install of the air shock?
Anyone have a link or anything showing the process? |
Re: Rear Air Suspension Problems
This help ?
http://www.youtube.com/watch?v=JSmkJc0RitM Quote:
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Re: Rear Air Suspension Problems
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Yeah ED, thanks a ton. It looks pretty easy. Cheaper than going to the dealer. You rock! |
Re: Rear Air Suspension Problems
Thanks but got to give credit where credit is due, IRA51 had that link in a post of his ;)
http://www.elcovaforums.com/forums/s...ad.php?t=37006 Good luck, Ed Quote:
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Re: Rear Air Suspension Problems
i have a 03 h2 n was wondering it changing air suspension kit to a conversion coil kit would be a good idea? cuzz i was told that'll cost less prob in the future...either way i have to get something done wit it...losing air from time time n havnt had the chance to take it in the a checkup...
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