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02-17-2013, 01:15 AM #1
Zero Power with a fully charged battery
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......93 GMC Sierra
02-17-2013, 08:42 AM #2
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.
02-17-2013, 09:59 AM #3
Thanks that will give me somewhere to start. Gonna go get some new cables right after I have a cup of coffee.
02-17-2013, 02:24 PM #4
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.01' 1500 LT Z71 ECSB 5.3L
line-x'd front brush guard with KC Daylighters, 6000k HID lows and highs, rewired highbeams, Trans-go mild shift kit, custom stainless duals, 3500 dually OEM taillights, K&N CAI. Still have OEM fender flairs and leveling kit in boxes waiting for time.
02-17-2013, 03:17 PM #5
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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