Change the tuning in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with the Tuning Switches available. For applications that have extended idle times, remote starters, and PTO�s, a high-idle kit is a great addition. These switches allow you to easily change tunes on your switch-on-the-fly programming. Industry-leading manufacturers like Duramax Tuner, Longhorn Fab Shop, and BD-Power are available.
