Signals and four ways do not work

Tiny
JOHN WEEKS2
  • MEMBER
  • 2003 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
Neither signals nor 4 way flasher work. Fuses check okay.
Thursday, July 29th, 2021 AT 7:43 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Given that the fuses are good, you probably have a faulty flasher relay/fuse.
It controls the turn signal flash as well as hazard.

It is located on the left side of instrument panel under the dash.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I have attached the location diagram as well as replacement procedure.

Please let me know if you have any questions.

Thank you.
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Thursday, July 29th, 2021 AT 8:27 AM

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