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01-06-2009, 05:23 PM
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Hummer Novice
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Join Date: Jul 2007
Location: Granada Hills CA
Posts: 17
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Won't start
2003 H2 0n 1/5/09; Started by going to radio shop to fix a few things. They replaced a fuse which got the obd port to start functioning. I had hooked up my superchips programmer a few times and no display. After replacement of fuse I hooked it up and the display came on. Drove around and while I had some down time I hooked up the programmer and it started to do it's thing...it never completed programming as it displayed "error in communications". I did notice that on the h2 display "unknown driver" then "driver 1" would come up. Tried a couple more times, but same result. When we needed to go home ...turned the key and nothing, no noise...tried to jump with jumper and vehicle and nothing. Lights brights, chimes loud, all seems great, ready to go...nothing. Got towed home, help.
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Alsalsa 
2003 Adventure package: Air Suspension: 20 inch wheels w/BF Goodrich LT 325 60R20 All Terrain T/A M+S: Flowmaster exhaust: Airaid cold air filter: Superchips flashpaq: Pioneer AVIC-D3 w/Navi, Ipod and 12" dropdown screen: Rear Camera: Jet Chips Air Mass Meter: Remote Starter: Cognito Kit: Third seat
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01-06-2009, 08:41 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: High in the Colorado Rockies
Posts: 210
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Re: Won't start
It sounds like the superchips programmer has trashed the ECM firmware/software. If that's the case your going to have to get towed to a dealership and have the ECM re-flashed/re-programmed with the factory stock tune.
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'05 H2 Lux, 37" KM2's on 17" Hutchinson Double Beadlocks, Cognito UCA's, Cognito Sway Bar Links, Custom Hydro-Assist Steering Upgrade, Eaton Front Differential Locker, 1" Rear Coil Spacers, Chevy Green Key Torsion Bar "Lift," Bilstein Shocks, Warn 9.5ti Multimount Winch, Dual Optima Yellow Top Battery's, Piaa & Hella Off-road lights, Gobi Rack, Tru-cool External Transmission Oil Cooler, Diablo Predator Hi-Octane Tune.
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01-08-2009, 10:09 PM
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Hummer Novice
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Join Date: Jul 2007
Location: Granada Hills CA
Posts: 17
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Re: Won't start
After getting some feedback. I called superchips tech people and they suggested a few things and it worked. Turns out the programmer shut down my vehicle. The vehicle battery needs to be at a certain level in order for the programmer to do its thing, if not error codes comeback. I charged the battery, plugged the programmer and it started. Thank God!
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Alsalsa
2003 Adventure package: Air Suspension: 20 inch wheels w/BF Goodrich LT 325 60R20 All Terrain T/A M+S: Flowmaster exhaust: Airaid cold air filter: Superchips flashpaq: Pioneer AVIC-D3 w/Navi, Ipod and 12" dropdown screen: Rear Camera: Jet Chips Air Mass Meter: Remote Starter: Cognito Kit: Third seat
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01-08-2009, 11:37 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: High in the Colorado Rockies
Posts: 210
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Re: Won't start
That's good news!! 
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'05 H2 Lux, 37" KM2's on 17" Hutchinson Double Beadlocks, Cognito UCA's, Cognito Sway Bar Links, Custom Hydro-Assist Steering Upgrade, Eaton Front Differential Locker, 1" Rear Coil Spacers, Chevy Green Key Torsion Bar "Lift," Bilstein Shocks, Warn 9.5ti Multimount Winch, Dual Optima Yellow Top Battery's, Piaa & Hella Off-road lights, Gobi Rack, Tru-cool External Transmission Oil Cooler, Diablo Predator Hi-Octane Tune.
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