use the up down arrows like it is tuned.
go into menu and select 3 gauge display
Current Truck: 2016 GMC Sierra Denali Duramax Z71. every option with exception of rear seat video. Snugtop truck cap with keyless entry, Edge Insight CTS II, custom rear back up camera for my boat trailer with quick disconnects.
Former Truck:2012 GMC Sierra SLT 2500 HD Crewcab, Duramax, Z-71 (4x4),Bilstein Steering Stabilizer, EGR fender flares, Century cap with interior carpet, BedRug, S & B cold air intake, stainless nerf bars, Banks DPF back Monster Exhaust, GM Under rear seat box, Edge