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2014 charge issues

Discussion in 'Chevy Trucks' started by GA73, Jan 28, 2015.

  1. GA73

    GA73 Member
    Messages: 90

    ive got a 2014 2500 work truck with the plow package. anyone else having issues with the variable charge alternator? soon as I hit the plow the volt meter drops and stays around 9 volts. the plow itself slows as do the rest of the electronics in the truck. have already cooked a blower motor and the dash cluster has went to hell
    im wondering with everything starving for juice what else will burn out
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    Start reading threads. Like 7 now on charging issues on gms
     
  3. Rick547

    Rick547 Senior Member
    from Indiana
    Messages: 535

    How old is your battery?

    Forget it has to be less than 2 years old. I can't read.
     
    Last edited: Jan 28, 2015
  4. GA73

    GA73 Member
    Messages: 90

    there are a lot of post about charging on here but none of them pertain to the computer controlled charge from the alternator.
     
  5. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    That's how the alternator charges now,,,,from the pcm.
    The "delay" in activation is the problem.
     
  6. GA73

    GA73 Member
    Messages: 90

    so thanks for telling me what I already knew. if you are so smart what is the solution to cure the problem?
     
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    Easy killer. I was just saying what I know. I wasn't sure what your post was getting at.
     
  8. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,531

     
  9. sagent

    sagent Junior Member
    Messages: 23

    Same type of problem on my 2011. Installed a second battery which helped some. I have read if you leave it in tow / haul mode it bypasses the battery current sensor and it seems to work. When I start my truck and raise my plow the volatge holds at 14+ volts the alternator seems to keep up with the load. If you drive the truck for 5 minutes and do the same thing the voltage will drop to about 12 volts or less. Absolutley the most idiotic system designed. This should not have been equipped on snowplow prep trucks. I don't see how you can get around it even if you intstalled a higher amp alternator if the body control module controls everything. There must be a way to tune it out like the performance guys do with the torque management on the PCM
     
  10. Plowtoy

    Plowtoy Senior Member
    Messages: 929

    Thats the only thing I could think of. Find someone who can reprogram that out of the PCM. Im sure its in there for fuel consumption. An altornator under load takes more to spin than on not under load...
     
  11. GA73

    GA73 Member
    Messages: 90

    dealer is saying the same add a battery but in my opinion that's just a band aid on the problem. plowed for twenty some years having a 160 amp alternator has always been enough juice to run everything while plowing
     
  12. BRETTMAN23

    BRETTMAN23 Member
    from ohio
    Messages: 37

    contact www.gmupfitter.com it is the 220 amp alternator. They are working on a fix with me now. there going to have the dealer wire in some kind of pigtail. the only other thing to do is downgrade to the 150 amp alternator.
     
  13. So is there a concerted effort on GM's part to solve this? I know that Fisher is working with them to solve the issue. It is happening on my'15 GMC 2500HD and is very annoying when the dash and radio go dark when operating the plow.
     
  14. BRETTMAN23

    BRETTMAN23 Member
    from ohio
    Messages: 37

  15. Ianscape

    Ianscape Junior Member
    Messages: 4

    I must have the 150amp on mine. I have a 2014 LT2 extended cab with a 7.5' MM1 and the only thing I notice is a brief climate control blower fan speed drop