Question about 2002 GMC Yukon Denali

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2008 Yukon Denali XL battery draw

I have a 2008 Yukon Denali XL that has a battery draw in it ever since I bought it. It has been in the dealership 4 times now and they keep telling me it is a bad cell in the battery so they replace the battery and send me on my way. Now I have to send it in again because again if the vehicle sits and I do not start it for 2 days the battery will be dead. Any suggestions for me or the dealership I am going to on fixing the problem. Thank you for your time.

Pete

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The easiest way to find the draw is to take a volt/ohm meter and remove the positive lead and connect the meter in series using the amp meter selection. By series, I mean hook the black meter lead to the battery, and the red meter lead to the battery cable.
Check your amp draw. (make sure you remove the bulb for your under hood light and everything off and closed. It should be milliamps.
If you have a more than several milli amps, start disconnecting fuses on at a time and put them back until you find the circuit that is drawing down the battery. Once you find the circuit, then it gets down to finding out whats shorted or bad in that circuit.
Good luck

Posted on Jan 20, 2009

  • jetfixr Jan 21, 2009

    I should have written several hundred milli amps. It is basically the current required to power your clock and any other minimal functions that require a keep alive power. Sorry for the confusion.

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