What else could be causing my cruise control issues?

[udlooz]

2003 Yukon
Some months ago, my cruise quit working... The only change I had made to that point was LED license plate lights, but I am not 100% sure if that is when the issue started - I have been assured that these lights do not affect cruise

Since the cruise quit, I have replaced:
Brake light switch
3rd brake light
Turn signal/cruise stalk
TAC module
and I have
Checked all taillight bulbs and grease with dielectric grease before reinstalling
Verified 12v at cruise fuse
Fixed the PCM ground wire behind the block

I am going crazy trying to figure out what else it could be... I drive 2k plus highway miles per month, so not having cruise is getting kinda tough... Does anybody have some other ideas?

 

[AllStock]

I believe the tails and plate lights are in conjunction and if an Led is installed it needs a load resistor installed with jt also. I out led tails in mine and my.remote start and cryise both stopped working. If you google it. There are quite a few other forums with similar problems and ways to fix with resistors.

Hope that helps

 

[udlooz]

It does, I will switch them today and see

Sent from my XT1080 using Tapatalk

 

[Rocket Man]

I pretty much guarantee it was the led plate light. Did you get it fixed? I had the same problem after installing led tail lights and load resistors did the trick.