Question about GMC Jimmy

4 Answers

I have a draw on the battery when truck is off, from the ATC fuse in the engine bay fuse block....as well as the Radio/Battery fuse in the dash fuse block......drains the battery after like a day.

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  • kwaves24 Apr 19, 2009

    I understand all of those factors....however I have tested these two circuits and the ATC fuse circuit should not have any draw when the truck is off and it has a large draw....that fuse is the transfer case.....the radio/battery circuit will have a small draw because of clock memory, but not as much as it is drawing and killing battery.....

  • kwaves24 Apr 19, 2009

    The ATC fuse is for the transfer case, and should not have any draw when the truck is off, and right now it has a large draw! and the radio/battery fuse will have a small draw for clock memory but right now it is large too and actually makes the test light go so bright and pulses when testing the circuit.

  • kwaves24 Apr 19, 2009

    The truck is a 2000 GMC Jimmy.....do you know where the relay for ATC is located? When you say switch for transfer case, do you mean the dash switch for the 4WD?

  • kwaves24 Apr 19, 2009

    The fuse I am pulling to notice the draw is the 20amp ATC fuse in the engine compartment fuse block...in the manual it is labelled ATC transfer case ( four wheel drive )

  • kwaves24 Apr 19, 2009

    the fuse i was pulling to find the draw was in the engine compartment fuse block...its not numbered, i went to the owners manual in located it, it is labelled ATC Transfer case (four wheel drive) pulling fuse 8 and in the interrior fuse panel didn't change anything

  • kwaves24 Apr 19, 2009

    No, pulling fuse 15 in the passenger compartment did not change anything...

  • kwaves24 Apr 20, 2009

    when you say bad bulbs, do you mean burnt out? or do you mean they can be still working but be bad.... as in take each one out and check for change in draw as each one comes out??

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Do you have remote starter on your jimmy? if so it could be your altanater

Posted on Apr 20, 2009

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Have you checked the parking and turn signal lights and brake and headlights, any bad bulbs will in some rare cases cause battery draw problems, I know this may seem stupidly obvious, but I figured Ican only try to help, I hope you get your problem solved, let me know if I was helpful

Posted on Apr 20, 2009

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What year is your truck... or perhaps you can locate it.... look for the relay for the ATC... i would suggest it is stuck in the on position.... if you replace it and still have the draw there is a chance that the switch for the transfer case is defective

Posted on Apr 19, 2009

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  • Roberta Smith
    Roberta Smith Apr 19, 2009

    i stand corrected... it has a transfer case shift control module (the relay is likely located internally) it is located behind the right front kick panel (side panel near your feet). that is the likely culprit. there is also a transfer case encoder motor located on the transfer case below the speed sensor.... i would suggest that you unplug that and check battery draw... then unplug the module and check battery draw again .... that will narrow down and eliminate some components.



    Also i would appreciate you letting me know which fuse you are pulling... the transfer case fuse controls another circuit as well

  • Roberta Smith
    Roberta Smith Apr 19, 2009

    unless you have already done this... pull fuse 8 inside the passenger compartment fuse box. i presume the fuse you were pulling was fuse 15. put it back in and pull fuse 8 and see if there is still draw on the battery.

  • Roberta Smith
    Roberta Smith Apr 19, 2009

    incidentally both fuse 8 and 15 should be 10 amp fuses

  • Roberta Smith
    Roberta Smith Apr 19, 2009

    did pulling fuse 15 in the same fuse box cause any change ?

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Hi there,

Batteries go flat for lots of reasons, here are a few ;
* Battery getting old
* Car has been standing for a while
* Alternator not charging
* Lights have been left on

hope this initial info/idea help§

Posted on Apr 19, 2009

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