blinkers and hazards not working

2002 CHEVROLET SILVERADO
230,000 MILES • 8.1L • V8 • 4WD • AUTOMATIC
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BANDDOT455
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  • 4 POSTS
Already changed the multi switch same still not working. any help will be appreciated. thank you.
Jan 11, 2021 at 3:47 PM
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4DRTOM
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  • 467 POSTS
Hello,

Have you checked the fuses and the flasher as well? Both of those things would stop them from working as well. Here is an article on checking the fuses:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Let me know.
Tom
Jan 12, 2021 at 12:32 AM
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BANDDOT455
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hey 4DRTOM. yes, I've checked all fuses only one I found blown was my acc one all others are good. I just replaced the multi switch and still no blinkers or hazards. wipers work, high lights work and cruse works. just the blinkers and hazards.
Jan 12, 2021 at 9:34 AM
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BANDDOT455
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also, I put in less so I bought the relay that fixes the hyperflash and worked it stopped the hyper flash after the blinkers stop working I replace the old relay and nothing.
Jan 12, 2021 at 9:36 AM
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4DRTOM
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  • 467 POSTS
Hello,

Okay, you are going to have to follow the signal. Since you know where the flasher is use a test light and check check to see that you have both power and it's grounded I have attached the diagrams for the circuit. Do you know how to read them? It's showing the grey wire should become hot when the turn signal is on and the light blue wire should become hot with the hazards. Use a test light for that. Then the black wire should be zero ohms use a VOM to test that. The purple wire should become flashing hot with either of them on. Do you have those tools? The diagram also show more than one fuse block so using the diagram get to those fuses with the test light and make sure the ones that matter are getting hot with the key on.
Let me know what you find.
Tom
Jan 13, 2021 at 8:46 PM
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BANDDOT455
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4DRTOM thanks for the advice man. when thru the whole fuse box sure enough on in the engine bay was burned and one In the cab flasher really was good. blinkers and hazards all working now. thank for taking the time to help me out.
Jan 18, 2021 at 12:41 PM
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4DRTOM
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Excellent.
Glad to help and thanks for using 2CarPros.
Tom
Jan 19, 2021 at 8:04 AM