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

2004 CHEVROLET SILVERADO
224,227 MILES • 4.8L • V8 • 2WD • AUTOMATIC
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YABOYPRUITT1999
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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.
Jun 5, 2025 at 7:30 PM
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STRAILER
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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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Jun 6, 2025 at 2:56 PM