Hi all! Selling Range AFM/DFM/DOD disabler. Blue LED RA003. Had it on my 2016 Silverado with 5.3L. Worked well, keeping it on V8 all the time. Helps prevent the lifters from collapsing and maintains full engine power at all times without a tune. No issues with dealer even with warranty repairs. Just unplug before service. $125 shipped from Brewster NY 10509.