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2004 GMC Envoy electronic dash problems

Tiny
HIGHVOLTAGE23
  • MEMBER
  • 2004 GMC ENVOY
  • 6 CYL
  • 4WD
  • 127,000 MILES
I have been having to jump my car lately every couple days the alternator is fine and when I jump it the dash board goes crazy on me flashing all check engine lites 4wd abs ect as well as my spedomiter and gas and oil presser gages not working I pluged in a diagnostic machine and got no code it drives and runs but cant figure out the problem I also looked for a loos groung and possibly blown fuse and nothing. Please help its driving me nuts thank you
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Thursday, February 27th, 2014 AT 1:41 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,752 POSTS
Please use some punctuation, otherwise that huge sentence can be misread a number of ways. What does "nothing" mean"? Nothing works? Nothing is wrong? How did you determine the generator is okay? Did you have it tested with a professional load tester? If so, what were the results for output current? How old is the battery?
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Thursday, February 27th, 2014 AT 5:58 PM

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