Oct 24, 2016 - 08:47 AM
You simply use the handheld to change the tune under the Tuning Tool menu from the main screen. This will allow you to change from one tune to the other as well as return the truck back to stock. (The DSP4, once installed, allows you to easily switch these tunes without needing the Spade Tuner plugged in.)
See below some videos for more info on the Duramax Tuner 2.8L Spade Tuner!
Diesel Performance Podcast host Paul Wilson hitches a ride in a freshly tuned 2.8L Duramax Canyon and becomes a believer. See the video below!