Turn signal blinking rapidly

2000 BUICK REGAL
120,000 MILES • TURBO • AUTOMATIC
Avatar
DROGAN1088
  • MEMBER
  • 2 POSTS
One of my turn signals is blinking rapidly. I have changed the bulb twice, but it continues to do it. To my knowledge, there is no relay for my car. It seems to do it consistently when my headlights are on, but it does happen when they are off. There are times when I would use the signal and it would blink rapidly, but suddenly start working properly.
May 3, 2016 at 9:04 PM
Advertisement
Avatar
CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
When the symptoms are different depending on whether the head lights are on or off, it is almost always a bad ground issue. Follow the wires from the socket to see if the one bolted to the body is cut.
May 3, 2016 at 9:19 PM
Avatar
DROGAN1088
  • MEMBER
  • 2 POSTS
Would you happen to know where it would be grounded? I can see about 10 inches of wires before I lose track of them.
May 6, 2016 at 12:41 PM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
These system ground are almost always by the incoming wiring harness near the main body mounts follow the harness until you see a black wire break out of the loom. Also, check the ground at the socket this is were the circuit usually goes bad.

here is a guide, to test it.


https://www.2carpros.com/articles/no-tail-lights-exterior-running-lights-tail-lights-out


Let me know how it goes

Best, Ken
May 8, 2016 at 11:00 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.