Extremely Fast Blinker

2000 Chev Blazer

Suddenly today I've noticed my left blinker is blinking extremely fast as compared to the right side. I mean very fast. Not sure what to think.

At first I thought maybe it did that if a bulb is burned out but all of the bulbs are fine, brake, turn signals, running lights, head lights, all of them.

Any thoughts on what might cause that to happen?

I know that you said you checked the bulbs, but you should check them again. The blown bulb will be on the same side that is blinking fast. Be sure to check the front and back. If you need to, turn on the opposite side and see what all should be blinking and then compare that to the other side to find out what's not.

I'll check again but that's what I had done. I checked everything and didn't find any out. I'll let you know what I find and thanks for the reply ....

I found it, the top bulb on the left side isn't flashing but you'd be hard pressed to notice it.

Thanks for your post, I appreciate the help ...