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I have a 1999 gmc v6 4.3L, i swap engine go to start it up all my lights and dash light are flickering i have proper connection on the battery and starter and still doing it. What else could it be?

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  • Cars & Trucks Master
  • 1,243 Answers

Time to break out the voltmeter and start chasing wires.

Posted on Dec 14, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

mmptruck
  • 124 Answers

SOURCE: car problems

Sounds to be a loose or corroded wire/s at either starter motor or at battery fusible links.
Also check the earth strap (Cable) between engine and bodywork.
Hope this helps, MMP

Posted on Aug 09, 2008

honeymokey
  • 3113 Answers

SOURCE: Alternator keeps going bad - three so far. Battery light flickering off/on now.

Having worked for an Isuzu dealer I have seen this a lot with aftermarket alternators from places like auto-zone, napa etc. For some reason they will do strange things in these vehicles. The fix was to get a Isuzu alternator. We did have good luck with Beck Arnly alternators also. We also had a local rebuilder repair some with good luck too. If all else fails get a used one.

Posted on May 05, 2009

Tualiapz
  • 80 Answers

SOURCE: Lights started flickering battery light came on Dash lights and gages went crazy now wont start

Like you said, battery may be flat. You can check that with a multimeter.

Next check the alternator. Faulty alternator leads to uncharged battery.

Posted on May 29, 2009

  • 197 Answers

SOURCE: 1999 GMC Suburban. no sound from radio

there is a plug at the back of the radio connecting it to the vehicle wiring loom. If you can get at thes plug, either from below or by removing the radio unit, make sure the plug is tight and secure. I can't think that the amp has gone or you would have lost all sound, so this is more than likely the problem.

Posted on Jul 11, 2009

  • 10 Answers

SOURCE: 2004 Blazer Dome lights, dash lights and headlamps with flicker

bad ground at battery or chase.

Posted on Jan 28, 2010

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