Battery not charging, need instructions on how to test wires from alternator to PCM with a multimeter

2003 CHEVROLET TAHOE
30,000 MILES • 5.3L • V8 • 4WD
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JESSICA DUBOSE
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I have replaced alternator battery and a few fuses.. when i jump start it will start; remove cables, shuts off. if battery has a charge it will run until battery drains.. fusible link seems fine, and i don't know what would make it not run the dang truck. I have run every wire i could find to look for damage. If you could shoot me some detailed instructions on how to test wires from alternator to PCM with a multimeter that would be great.
Jun 23, 2021 at 10:33 AM
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STRAILER
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no problem. here is a guide and the alternator wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-wiring

Make sure the fuses are good. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Jun 24, 2021 at 3:01 PM