I took delivery! 2021 SLE. Just had katzkin installed. I plan on removing the running boards tonight. I have a ProComp front spacer I bought from Dylan199 on this site. I also have a Speed Turtle EZ flash module to install this evening as well
I have taken delivery of my 2021 Sierra 1500 SLE. It's used and has this rotary knob/switch installed. It lights up in different colors when pressed and illuminates all or only a few LEDs when rotated. Any guess?
James