Blower motor not working/dome lights flash on and off/ stalls when making tight turns?

Tiny
YABOYPRUITT1999
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 4.8L
  • V8
  • 2WD
  • AUTOMATIC
  • 224,227 MILES
Blower motor not working/dome lights flash on and off/ stalls when making tight turns at slow speeds/windshield wipers won’t cut off after being turned on until I shut the truck off and turn it back on. I can smack the dash, and it makes a difference for the dome lights going on and off.
Thursday, June 5th, 2025 AT 7:30 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yes, it sounds like you have a bad system ground for the BCM. Here is how to check the grounds for the BCM and I have included a wiring diagram to show the grounds and their locations.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images (below). Let us know how it goes.
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Friday, June 6th, 2025 AT 2:56 PM

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