Range Technology Active Fuel Management Disable Device
The Range AFM Disable Device keeps your truck in 8 cylinder mode 100% of the time, preventing the Active Fuel Management system from dropping cylinders. This is the only product that will disable Active Fuel Management WITHOUT REPROGRAMMING THE FACTORY ECU. Full power delivery all the time without factory warranty concerns.This works for all GM AFM equipped cars, trucks, and SUVs up to 2013 model year.  It will work with 2014/15s but there may be some bugs (we are working on them and will offer a free update to any that purchased this item for the 14s/15s when it is released).