Question about 2006 Chevrolet Avalanche

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Voltage drops after 5 miles

14.5 volts after you start it after about 5 miles it drops to about 12.7 stays there till you restart it replace alt and alt module on the neg. battery cable still has the same problem

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  • kiphansen May 21, 2009

    hi moe any ideas



  • kiphansen May 21, 2009

    i checked battery posts they are clean and tite

  • kiphansen May 21, 2009

    any ideas



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  • Master
  • 335 Answers

Moe here ,if you check posts let me know I will ckeck back asap.

Posted on May 21, 2009

  • Moe May 21, 2009

    When I sayed to check posts, I meant for you to check the posts on your site. But knowing that the battery posts are o/k helps.

    Need to know if problem is with the battery or your dash. Do you need to boost to get going or just start and go?

  • Moe May 21, 2009

    Help me. What is the problem and how does it affect you? This 14.5 and 12.7 doesn't mean anything unless there is a problem. If it is a dash reading then i would say something about wiring and things but I still don't know if you have a problem with the battery or starting.

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