Left turn signal works only 5% of time

JIMYJO

MEMBER
2003 GMC YUKON
16,600 MILES

When you turn on the left turn signal it clicks. Sometimes it blinks but only once or twice then stops and clicks. Right signal works fine. Left rear bulb looks fine. Front bulb was burned out and I replaced. Still does the same thing.

Wednesday, December 28th, 2011 AT 8:23 PM

5 Replies

SATURNTECH9

MECHANIC
30,870 POSTS

So when it stops blinking does it just stay on solid?Also do you have a test light to do some testing?

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, December 28th, 2011 AT 8:28 PM

JIMYJO

MEMBER
3 POSTS

No test light. It goes off completely and clicks

Was this

answer

helpful?

Yes

No

Wednesday, December 28th, 2011 AT 9:27 PM

SATURNTECH9

MECHANIC
30,870 POSTS

Sounds like a bad flasher but without atleast a test light we cant do much testing.

Was this

answer

helpful?

Yes

No

Wednesday, December 28th, 2011 AT 9:35 PM

JIMYJO

MEMBER
3 POSTS

I thought the flasher controlled both sides. Can it be bad and still work on right side. I can get a test light if it will make it easier to determine. Cheaper than the dealer.

Was this

answer

helpful?

Yes

No

Wednesday, December 28th, 2011 AT 9:45 PM

SATURNTECH9

MECHANIC
30,870 POSTS

As you can see in the diagram I posted its more of a module and there is a fuse for the left and right turn signals make sure those fuses are good. Also make sure you get a computer safe test light.

Image (Click to make bigger)