I had this on my 2018 GMC Sierra. It fits multiple years. I’ve taken a picture of the serial number so you can see if it’s compatible with your vehicle. Plugs into the computer port under the dash and keeps it in V8 mode full time. Works perfectly. Going with a Tundra so don’t need it anymore. $213 new. I’ll price it at $100. I can ship in a padded envelope if needed. Insurance on your dime.

Range Technologies

Ill take it, text me 205-363-0423