Question about 1989 GMC C1500

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89 chevy c1500 5.0l auto.....won't crank....solenoid just clicks

Hey everyone....i need some help. I have an 89 Chevy C-1500 Silverado. It has a 5.0l Automatic. Back in Aug on my Honeymoon me and the new wife took a trip. We had shut the vehicle down at a gas station. When we came out, it wouldn't crank. On the volt gauge it readless than 9 volts so i got a jump....didn't work. Let it sit for a few and it fired right up but only after the volt meter came up to where it belonged. Dec it happened again....i put in a starter even after the old tested fine, batter, cables, I wire, and ignition switch...same thing...9 volts on the gauge. But 12.5 at the battery. If you turn the headlights on they dim down and the volt gauge goes to zero. If you go to crank it the solenoid will just chatter. The purple wire is only getting 8-9 volts.....then i check he battery and its 12.5...whats going on? if i go to the junction block on the fire wall i can get 12 volts if i ground to the battery,if i use the firewall or and firewall grounds i get 8-9 volts????? Possible a bad ground but where???? i am at a loss..please help

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  • tbeers156 Feb 02, 2009

    all is brand new. I thought the same thing. it has new cables and ends, battery, starter, alt, purple wire, ignition switch...wont jump...battery 12.5 volts, @ junction block 8-9 volts. I think it's a ground. i just remembered last year it melted the ground wire that goes from the battery to the fender near the under hood utility light.........vehicle still started...but what caused it to melt.

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Sounds to me like you need to clean the battery post and the cables. Take off the batter cables and either take some sandpaper or a wire brush and clean the post and then do the same to the inside of the battery cables that comes in contact with the batter post.

Posted on Feb 02, 2009

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