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03 H2 issues

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Old Dec 11, 2018 | 12:32 PM
  #1  
Stripp13's Avatar
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Default 03 H2 issues

I have 3 issues going on with my 03 H2. Wondering 1) If they're related 2) most likely solution to fix. First is the traction control + abs + brake warning indicators + chime all come on only sometimes while I'm driving. I have to clear the "service brake system" off DiC manually for it to go away. Second, when I turn off the truck, the radio and on star are staying on and the battery icon lights up on the Dic running the battery down if I don't unhook it. Last issue is it's not wanting to go into second gear unless i let off the accelerator. I can feel a bit of vibration under accelerator. And won't go into over drive. Rpm's at about 3000 at 70 mph. Please help!
 
Old Dec 12, 2018 | 11:36 AM
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Blackbus's Avatar
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Holy crap, it sounds like you got a lot going on. I have changed out the abs control module on mine when it went bad, but before you just start swapping stuff out you may want to check and clean all your grounds and make sure they are all connected. That’s what the repair manuals recommend doing first, and I hope that ends up fixing your problem. It sounds like you have too much happening at once for everything to be bad, at least I hope that’s not the case.
 
Old Dec 12, 2018 | 08:46 PM
  #3  
hummer_on_fumes's Avatar
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Originally Posted by Stripp13
I have 3 issues going on with my 03 H2. Wondering 1) If they're related 2) most likely solution to fix. First is the traction control + abs + brake warning indicators + chime all come on only sometimes while I'm driving. I have to clear the "service brake system" off DiC manually for it to go away. Second, when I turn off the truck, the radio and on star are staying on and the battery icon lights up on the Dic running the battery down if I don't unhook it. Last issue is it's not wanting to go into second gear unless i let off the accelerator. I can feel a bit of vibration under accelerator. And won't go into over drive. Rpm's at about 3000 at 70 mph. Please help!
1) Sounds like the EBCM. Next time all the lights go off you'll need to get the codes pulled to know for sure. You can have your EBCM refurbished if it ends up being the problem instead of buying a new one.
2) If you pull the wiper fuse does the radio go off?
3) When was the last time the transmission was serviced? How old is your radiator? Can you check the trans dip stick to see what color the fluid is?
 
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