The back of 2018 Denali grill is different, I was told it takes up a lot more room than other gm grills. I’m guessing that would have to be modified as well. Just wondering if anyone has installed on specifically on the 2018 Denali grill.
On my 2018 I have to wait about 5seconds before trying and it works every time. If you try before that, it won’t work and you will have to cycle the lights to get it to turn on/off.