Blinkers and hazards not working

Tiny
BANDDOT455
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • 8.1L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
Already changed the multi switch same still not working. Any help will be appreciated. Thank you.
Monday, January 11th, 2021 AT 3:47 PM

6 Replies

Tiny
4DRTOM
  • MECHANIC
  • 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
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Tuesday, January 12th, 2021 AT 12:32 AM
Tiny
BANDDOT455
  • MEMBER
  • 4 POSTS
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.
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Tuesday, January 12th, 2021 AT 9:34 AM
Tiny
BANDDOT455
  • MEMBER
  • 4 POSTS
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.
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Tuesday, January 12th, 2021 AT 9:36 AM
Tiny
4DRTOM
  • MECHANIC
  • 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
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Wednesday, January 13th, 2021 AT 8:46 PM
Tiny
BANDDOT455
  • MEMBER
  • 4 POSTS
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.
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Monday, January 18th, 2021 AT 12:41 PM
Tiny
4DRTOM
  • MECHANIC
  • 467 POSTS
Excellent.
Glad to help and thanks for using 2CarPros.
Tom
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Tuesday, January 19th, 2021 AT 8:04 AM

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