[RTanner]

So my left mirror turn signal NEVER worked since i bought the truck, then today i extend the mirrors then put em back and it started working! SWEET, but what is in there? a looped wire harness, a sliding terminal strip? what would cause that to happen? just curious.....

 

[duramax07tmd]

Just like you said, could have been a loose connection on the wiring harness, but hey, you got it working now!!!!