charged battery now it will not crank

2002 CHEVROLET 1500

163,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC

JASONTERRY

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my son drained the battery in my truck listed above, so I hooked up the battery charger to it and now it won't even crank over. the battery is fully charged and all lights inside the truck come on but nothing happens when I turn the key. This truck has never failed to start in the past. I have checked for blown fuses, and even switched the headlight and started relay under the hood with no improvement.
Any help will be greatly appreciated, thanks.

Nov 29, 2020 at 8:17 PM

JACOBANDNICKOLAS

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110,175 POSTS

Hi,

First, see if it starts in neutral. If it doesn't, I need you to check three fuses. I highlighted them in pic 1 and pics 2 and 3 show the locations in the box.

If the fuses are good, next confirm there is power to them and from them. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are good and there is power to and from them, I need you to check for power to the purple wire on the starter. That is the trigger wire. It will only have 12v when the key is in the start position, so you will need a helper.

If there is no power, let me know. If there is power, replace the starter.

Pic 2 below is of the under the hood fuse box. I highlighted the two fuses I need checked. Pic 3 is the fuse box under the dash on the driver's side. I highlighted it as well.

Do this and let me know what you find. If you had the battery connected when recharging, there is a chance it blew a fuse. Hopefully, it will be that easy.

________________________

Let me know what you find or if you have other questions.

Take care,
Joe

Images (Click to enlarge)

Nov 29, 2020 at 9:00 PM