Zero Power with a fully charged battery

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by Damning, Feb 17, 2013.

  1. Damning

    Damning New Member

    Hey guys, I hope someone can help with this.

    I have a 93 GMC ECSB. 5.7L 350. I went out to start my truck tonight to head to walmart and nothing happened. lol
    No lights, no ignition. So my first thought was I must have left the dome light on and drained the battery. So I pull the battery and set it up on my trickle charger. Nice slow 2amp trickle and I will deal with it in the morning.

    Well, I'm watching the needle on my charger slowly move over to 100% fully charged. I have a new battery, maybe 2 months old. Charger says it's good. So, whats my next step? Fuses? Alternator? Relay? Need help......
  2. j cat

    j cat Epic Member 5+ Years 1000 Posts

    being this old corroded cables are a big item. the other is fuseable LINKS . these type wire fuses turn green [corrode] and you get no power . after you check the battery cables then go to the starter and check for these wires and links condition. you may also have a link or two over the intake manifold harness which is less likely to be corroded but some have had this issue with these at this location.

    using a volt meter track down the loss of voltage . check that the ignition switch is functioning properly.
  3. Damning

    Damning New Member

    Thanks that will give me somewhere to start. Gonna go get some new cables right after I have a cup of coffee. :)
  4. shibby2oo8

    shibby2oo8 Member 2 Years 100 Posts

    Just make sure to replace them with new links, az, etc has them with the other wiring stuff. On the 80's gms there were 2-3 down by the started but im not sure on a 93. My buddy had one off the starter rot on his monte and there was no power inside at all.
  5. zigger215

    zigger215 Member 2 Years 500 Posts

    I second the cables and termination points as a possible cause, if you have very low output once the truck has started then it could be an alternator issue


    You're American made truck simply doesn't want to go to a s*** show that is wal mart. :)

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