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200 amp alternator on '04 2500HD 6.0L??

Discussion in 'Chevy Trucks' started by PlowBoy85, Dec 11, 2009.

  1. PlowBoy85

    PlowBoy85 Junior Member
    Messages: 9

    Gday lads, my truck wont keep enough charge in the batts to lift my plow after an hour or so of plowing, thinking about putting a bigger alternator in.....any thoughts? anyone else seen this problem?

    plowing with 8' stainless fisher xblade
  2. mycirus

    mycirus Senior Member
    from Mass
    Messages: 589

    Do you have dual batteries? I put a bigger alternator on mine but it made my check engine light come. I went back to the regular one and it seems fine. I have dual batteries.
  3. PlowBoy85

    PlowBoy85 Junior Member
    Messages: 9

    Ya has the plow prep package, dual batteries, 145 amp alternator, maybe the xblade is just too big for the truck
  4. Burkartsplow

    Burkartsplow PlowSite Veteran
    Messages: 3,246

    It is not to big for the truck. I have an 04 2500hd with plow prep and I run and 8.5ft poly blade with wings(close to 1000lbs) 6 head strobe kit, salter, and led lightbar(it does not dram any amps). With dual batteries. I have the 145amp alt that came with and it does fine even after 30 hours of work. Maybe you just need to put a new 145 amp alt in and that will fix your problem, But for a few bucks more you can go with the 200 amp. might as well since you have it out. But I am not the exact expert. Ask B&B. He knows all..
  5. JCI Trans

    JCI Trans Senior Member
    Messages: 315

    I run an 8' straight blade, full strobe/halogen lightbar, dual 60 watt halogen takedowns, hideaway strobes, radio and heater on 1 batt and the stock 145 amp (with 100k on it)and have never had a problem. Check your connections for corrosion, both at the battery and alternator lines. Clean them, put some dielectric grease on them before reassembly, and give it a spray of the battery terminal coating. The battery may not be getting a full clean charge. It also couldnt hurt to test the alternator and load test the battery. good luck!
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Still running the original Delco batteries in it? If so, those would be part of your issue. 5 years is the end of the life cycle on them, if they even go that long.
  7. sweetk30

    sweetk30 PlowSite.com Addict
    Messages: 1,588

  8. icudoucme

    icudoucme Senior Member
    Messages: 367

    I have a 2004 chevy 2500hd with plow prep. Last year my alternator fried. The switch stuck on and burnt one of my batteries. I upgraded to a 200amp alt. Best thing I ever did besides buying timbrens. I can run all my lights(running, head, and aux back up), heater on high, radio with sub, corner strobes, roof mount mini bar and plow. The lights dim for half a second and then back to normal. My dash volt meter hardly dances anymore. I think they are worth it.
  9. PlowBoy85

    PlowBoy85 Junior Member
    Messages: 9

    Ok, im all fixed up lads, went and bought new fisher motor, works perfect! you should of seen the buildup of crap around the base.......