Thread: Turn Signal Won't Work; Mystery

My LF blinker won't work. The rear blinker blinks fast, nothing at the front. Bulb is good, changed it anyway. Then I changed the little wire harness for the headlamp. Any suggestions what to try next?

Right, forgot to mention it's an 04 comp g. Thanks very much for the diagram!

Did you get your turn signal issue solved? It sounds like my cars issue exactly. Only the front left turn signal wont blink, The rear left blinks rapidly. The yellow bulb lights up on low side but no power to the blinker. I have been led to believe the problem is in the body control module. Autozone computer says there is no relay available , that it is integrated into bcm. I would greatly appreciate any help from someone who has tackled this problem in the past.

I actually took the sockets and wire s from the right side that works and tried them on the left side that made no difference. After continuing my research many people have had problems with bcm and some offer vids on youtube on how to take bcm out and resolder bad connections. I have ran the wires back from socket back to a new multi function switch and could not find any blinking anywhere. I am 95 % sure it is in the bcm. but was hoping to find someone who has had this issue and how they fixed it. Don't want to blow the money and disable the car for 3 to 5 days if its not going to fix my problem. Also have a hood ajar code show up on DIC. That might be in the bcm as well as I could find no fault in any wires to the switch that controls that. and the hood is definitely closed.

Hey there, You got something against poop? lol. I know it is kind of a crappy way to say hi, see what I did there? But hey... dare do be different is good. Tried the arm out the window thing damn near lost 2 fingers to frostbite. Not really. But not that it matters to you guys but I do have a working turn signal on all four corners now. Sometimes little brothers can be useful. Not bcm afterall.

As I said sometime little bros can be helpful. We actually found a connection that looked secure and well wrapped in electricians tape, we were lucky to have the signal on and watching the bulb as we wiggled the wires and saw the light blink. We took the tape off to find a bad connection in the light blue with white stripe wire. Simple fix from there. Had to disassemble half of the front clip to find it but all is good now. Now if I could only make the hood ajar warning go away that easily. Big thanx to 02navyblue for posting the wiring diagram it was useful in tracing the wires.