Rebuilt engine issues

2003 CHEVROLET SILVERADO
200,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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JDOGGGG
  • MEMBER
  • 5 POSTS
Okay, truck had to have vats clean com put in truck to run. Then a new key switch. none of my controls work for doors or window my oil, gas, volt, or temperature works. Interior lights bulbs had to be taken out because they would stay on and drain the battery. touched battery the other day shocked me there and we're I was touching body. and today truck continued to run with key off until I switched it back on.
Apr 11, 2022 at 5:03 AM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Sounds like it is grounding issue if the battery shocked you while you were touching the body of the vehicle. Basically it used you as a better path to ground then the ground wire attached to the battery.

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

So, what we need to do is check the resistance from the battery cable from end to end and then from the battery to ground.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

You should have less then a half ohm but let's start with this and then recheck all the other issues.

I attached a diagram below which will show this ground cable so let me know what you find and we can go from there.

Thanks
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Apr 12, 2022 at 11:45 AM
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