SPONSORED LINKS

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

Tiny
JESSICA DUBOSE
  • MEMBER
  • 2003 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • 30,000 MILES
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.
SPONSORED LINKS
Wednesday, June 23rd, 2021 AT 10:33 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
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.
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, June 24th, 2021 AT 3:01 PM

Please login or register to post a reply.

Related Alternator Not Charging Content

Alternator Replacement
VIDEO
Alternator Replacement
Instructional repair video
Alternator Replacement
GUIDE
Alternator Replacement
Got a red battery warning light on? This most likely means the alternator has gone out and needs a replacement. To confirm the failure use a voltmeter to test the alternator...
VIEW MORE

Sponsored links