Hyper flasher in relay switch

Tiny
PCKTHOMAS@LIVE.COM
  • MEMBER
  • 2002 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
My turn indicators sound like they have been turned on even when not in use. All bulbs intact and work. Looked for new part- discount at GM dealer- pulled one from wreck still has "hyper flashing" sound. Also tried other new replacement parts from O'Reilly and Napa and AutoZone all failed to install correctly.

Will I need a whole new flasher wiring system?
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Saturday, February 23rd, 2019 AT 11:21 AM

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Tiny
KEN
  • ADMIN
Hello

It sounds like you have a bad ground. here is a guide to help you test the ground circuits and the blinker wiring diagrams and flasher location so you can see how the system works.

https://www.2carpros.com/articles/how-to-check-wiring

Check the grounds for the bulbs. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Monday, February 25th, 2019 AT 12:30 PM

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