Britjoe

Over on the face book group I had some help and I thought Id pass on my findings, I tried searching and if its old news I apologize in advance

Any how I've been replacing all my Bulbs including the third Brake light(tailgate) brake light.

I dont do alot of highway driving and a few days after my LED 3rd brake light replacement I was on the highway and I had no Cruise control, turns out GM decided that if you have a bulb go out or you install LEDs on your 3rd Brake light no Cruise the Cruise light goes on but it wont engage.

Answer was put a inline resister, for the LED, or replace the bulb, if its broken.

firemangeorge

Yes, it's old news BUT, a good reminder for those that aren't familiar with it.

You went to Facebook before asking here? Shame on you.

donbrew

The search would have saved from facebook!

Oldblue

all that put aside , Thanks for the reminder Joe, I have learned to leave the third brake lights alone! Just like GM wanted !!