2004 GMC Envoy electronic dash problems

2004 GMC ENVOY
127,000 MILES • 6 CYL • 4WD
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HIGHVOLTAGE23
  • MEMBER
  • 1 POST
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
Feb 27, 2014 at 1:41 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
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?
Feb 27, 2014 at 5:58 PM
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