GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 6 of 6
  1. #1
    Jr. Mechanic 95Chevyk1500's Avatar
    Join Date
    Dec 2009
    Location
    Maine (so yes, I can ride a moose)
    Posts
    100

    Exclamation Getting tired of dead battery. Help?

    This is the fifth time this has happened. This is the first time today it is completely dead. First time it drained was when i left the dome light on and we jumped it and it was fine. This is what I have done recently:
    Replaced fenders (there is a ground on the pas. side fender)
    Replaced bed (ground from gastank and all the tail lights)
    The truck seems to be a clusterf**k of wiring. But theres no lights on when the truck is off, door is shut, the light under the hood is unplugged. I'm really frustrated and really discouraged. Ideas?

    p.s.
    it's 4 degrees, and the truck is garaged.
    Last edited by 95Chevyk1500; 12-18-2009 at 06:52 AM.
    1997 Chevy c1500
    Regular cab Shortbox
    4.3 Automatic (wish it was a 5 speed, but i'll get over it)
    157k miles

  2. #2
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    Location
    High Deserts of SoCal
    Posts
    2,554

    Default

    1st you have to isolate the trouble. Is it the battery, alternator, or some current drain?

    Have the battery load tested, and while your at it, have the alternator tested as well.

    Once you've eliminated those as a source, try disconnecting the battery overnight to see if the battery holds its charge while not connected to anything.

    After that get an amp meter. (caution: the meter must be able to handle a 10amp load) Remove the positive cable and put one lead on the battery terminal and the other on the battery cable. (caution: do this only while the truck is not running) in most cases, the measurement should be less than 1amp. If the measurement is higher you can start pulling fuses to see what is causing the high current draw.

    Let us know what you find.

    Just a side note: Once a battery has dropped below 1volt, it is difficult if not impossible for it to recover. You might be able to put a surface charge on it, but for all intents and purposes it is a dead battery. The load test will tell you if the battery is good or not. If you try to charge a "dead" battery it is possible to experience "thermal overload" which is a subject for another forum.
    There is no way to happiness....happiness is the way.:yipi:
    http://kx6ijq.blu.livefilestore.com/y1pcOFVNH4ix1hjyGUVyXK5LRfef7qSeWzlZDorpQhIEfkZ2ZA  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
    02 Honda Civic LX
    Looking for a 1990's Miata for an engine swap

  3. #3
    Jr. Mechanic 95Chevyk1500's Avatar
    Join Date
    Dec 2009
    Location
    Maine (so yes, I can ride a moose)
    Posts
    100

    Default

    well, i tested the battery. 220 cold cranking amps when its rated for 770. replaced it. it was only 7 months old but it was junk. We'll see. also the truck passed the cnstant draw test, it draws .7 amps when its off, and the test machine said it passed.
    1997 Chevy c1500
    Regular cab Shortbox
    4.3 Automatic (wish it was a 5 speed, but i'll get over it)
    157k miles

  4. #4

    Default

    Quote Originally Posted by 95Chevyk1500 View Post
    well, i tested the battery. 220 cold cranking amps when its rated for 770. replaced it. it was only 7 months old but it was junk. We'll see. also the truck passed the cnstant draw test, it draws .7 amps when its off, and the test machine said it passed.
    Did they test the charging voltage? Hope so.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  5. #5

    Default

    If you're handy with a standard volt meter, set it to 20V, start the truck and put the probes on the battery terminals, positive to positive, negative to negative (DUH!!) and have someone bring the rpm's up from idle. It should get to 13.5- 14 volts by about 1700 rpm. If not, then it's not charging.
    You're driving is WAY more offensive than my swearing, assjack!!!


  6. #6
    Jr. Mechanic 95Chevyk1500's Avatar
    Join Date
    Dec 2009
    Location
    Maine (so yes, I can ride a moose)
    Posts
    100

    Default

    that test said the alternator is fine to
    1997 Chevy c1500
    Regular cab Shortbox
    4.3 Automatic (wish it was a 5 speed, but i'll get over it)
    157k miles

Similar Threads

  1. dead battery !
    By loic in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 7
    Last Post: 08-31-2009, 07:01 PM
  2. dead battery?
    By vegaschevy in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 13
    Last Post: 02-23-2009, 08:27 PM
  3. Dead Battery
    By starultra in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 2
    Last Post: 02-22-2009, 06:23 PM
  4. Can't recharge my dead battery
    By areotreker in forum Audio, Video & Gadget Tech
    Replies: 10
    Last Post: 11-03-2008, 06:36 PM

Tags for this Thread

Posting Permissions

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