Turn signal harness

[Andrew Mylin]

I apologize if this has been discuseed. I could not find a thread on it. I have a 2016 LT tahoe that i upgraded the mirrors to the DL3 mirror and window switches. I do have memeory seats so the power fold works but not the turn signials. Is there another harness I need to make the turn signals work? I was told the BCM neded to be flasked, I work at a GM dealer and I asked our shop foreman but he said there was nothing to flash it must be a harness. Any help would be appreicated. thanks

 

[Doubeleive]

I apologize if this has been discuseed. I could not find a thread on it. I have a 2016 LT tahoe that i upgraded the mirrors to the DL3 mirror and window switches. I do have memeory seats so the power fold works but not the turn signials. Is there another harness I need to make the turn signals work? I was told the BCM neded to be flasked, I work at a GM dealer and I asked our shop foreman but he said there was nothing to flash it must be a harness. Any help would be appreicated. thanks

Just needs the wire added, either from the door/body interface to door switch, or from bcm to door/body interface to door switch, just depends on the visible pins at the door/body interface
if you have a 2lt it might have the pin at the body interface already, you can reach out to phil the "harness dr" I don't think he is active on this forum but he is on gmtrucks and he has a website.