®




Results 1 to 4 of 4

Thread: 2003 Yukon battery drain?

  1. #1
    Meebers
    Guest Meebers's Avatar

    Default 2003 Yukon battery drain?

    If you think it might be the alternator, you could remove the wire (s) from
    it while monitoring the current draw.

    "HardWorkingDog" <harvey@mush.man> wrote in message
    news:harvey-7417FE.17463627112007@..................
    > Greetings. I usually reside over at rec.motorcycles.dirt, but am
    > looking for help on my Yukon XL.
    >
    > Battery went dead a couple times over the course of a month and I
    > figured it was time for a new battery. Dashboard ammeter indicates
    > charging system is OK, the battery was at least 55 months or so into
    > it's 72 month rated life.
    >
    > In the process, I checked for anything that might be draining the
    > battery down, and found a 1.3 amp drain with key off and out. Is this
    > normal? I wouldn't think so, but I realize there are some circuits
    > that must stay live.
    >
    > I then put a light-em-up circuit tester in line with the neg terminal
    > of the battery and the neg. cable, and proceeded to one by one pull
    > every fuse in the panel under the hood and at the left end of the
    > instrument panel. Light stayed on the whole time.
    >
    > It's been suggested it could be a bad rectifier in the alternator, but
    > I'd appreciate any pointers on whether this is an abnormal situation
    > or not.
    >
    > Suggestions on what to do next are appreciated.
    >
    > --
    > Charles
    > '99 YZ250

  2. #2
    Big Al
    Guest Big Al's Avatar

    Default 2003 Yukon battery drain?

    > In article <474ccb65$0$28805$4c368faf@roadrunner.com>,
    > "Meebers" <Ionlywork@home.com> wrote:
    >
    >> If you think it might be the alternator, you could remove the wire (s)
    >> from
    >> it while monitoring the current draw.
    >>

    >
    > Yup, it had occurred to me, haven't got arountuit yet though. Still
    > curious if this is abnormal or not.
    >
    > --
    > Charles


    Anything over about .3 Amp would be abnormal.

    If it's the alternator it will be warm to the touch in the morning.

    Al

  3. #3
    Meat Plow
    Guest Meat Plow's Avatar

    Default 2003 Yukon battery drain?

    > Greetings. I usually reside over at rec.motorcycles.dirt, but am
    > looking for help on my Yukon XL.
    >
    > Battery went dead a couple times over the course of a month and I
    > figured it was time for a new battery. Dashboard ammeter indicates
    > charging system is OK, the battery was at least 55 months or so into
    > it's 72 month rated life.
    >
    > In the process, I checked for anything that might be draining the
    > battery down, and found a 1.3 amp drain with key off and out. Is this
    > normal? I wouldn't think so, but I realize there are some circuits
    > that must stay live.
    >
    > I then put a light-em-up circuit tester in line with the neg terminal
    > of the battery and the neg. cable, and proceeded to one by one pull
    > every fuse in the panel under the hood and at the left end of the
    > instrument panel. Light stayed on the whole time.
    >
    > It's been suggested it could be a bad rectifier in the alternator, but
    > I'd appreciate any pointers on whether this is an abnormal situation
    > or not.
    >
    > Suggestions on what to do next are appreciated.


    1.3 amps isn't enough to drain a battery overnight but isn't normal either.
    Pull the plus cable and any plugin lead off the alternator and see if the
    current drain stops. If so you may have a leaky rectifier in the
    alternator.

  4. #4
    Meat Plow
    Guest Meat Plow's Avatar

    Default 2003 Yukon battery drain?

    >>
    >> > Greetings. I usually reside over at rec.motorcycles.dirt, but am
    >> > looking for help on my Yukon XL.
    >> >
    >> > Battery went dead a couple times over the course of a month and I
    >> > figured it was time for a new battery. Dashboard ammeter indicates
    >> > charging system is OK, the battery was at least 55 months or so into
    >> > it's 72 month rated life.
    >> >
    >> > In the process, I checked for anything that might be draining the
    >> > battery down, and found a 1.3 amp drain with key off and out. Is this
    >> > normal? I wouldn't think so, but I realize there are some circuits
    >> > that must stay live.
    >> >
    >> > I then put a light-em-up circuit tester in line with the neg terminal
    >> > of the battery and the neg. cable, and proceeded to one by one pull
    >> > every fuse in the panel under the hood and at the left end of the
    >> > instrument panel. Light stayed on the whole time.
    >> >
    >> > It's been suggested it could be a bad rectifier in the alternator, but
    >> > I'd appreciate any pointers on whether this is an abnormal situation
    >> > or not.
    >> >
    >> > Suggestions on what to do next are appreciated.

    >>
    >> 1.3 amps isn't enough to drain a battery overnight but isn't normal either.
    >> Pull the plus cable and any plugin lead off the alternator and see if the
    >> current drain stops. If so you may have a leaky rectifier in the
    >> alternator.[/color]
    >
    > Pulled both cables off the alternator, still draining current. I did
    > it this evening in the dark, and when I put my lamp circuit tester on
    > it, I realized the circuit is pulsing dim-bright, dim-bright,
    > dim-bright.
    >
    > And I could clearly hear something power up near the firewall/steering
    > column area whenever I put the ammeter or circuit tester in place.[/color]

    Good news it isn't the alternator. Bad news is you might want to contact a
    local GMC dealer and ask them as it's anyone's guess what you're hearing
    and if it has anything to do with the current draw. Some thing else to
    consider is unless someone can chime in and say from experience with an 03
    Yukon or Tahoe or Suburbon that 1.3 amps is definitely too much draw, it
    may not be depending on the accessories etc...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •