range technology afm disable full power

Range Start/Stop WITH AFM Disabler for V6 and V8 GM vehicles

All Cylinders. All the time.  No more annoying Start/Stop in stop and go traffic!

The Range AFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active Fuel Management system (AFM) from dropping cylinders.  It also prevents the vehicle from the annoying engine stop and restart at stop lights!

In 2019 Dynamic Fuel Management (DFM) equipped models, only the Start/Stop is disabled and DFM works normally.

Our patented technology 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.  CARB TESTING PROCESS in progress

NOW ALSO DISABLES STOP/START IN SELECT GM VEHICLES with eAssist (pre-2019) as well as AFM!  Disables Start/Stop in 2019 GM vehicles with DFM (Dynamic Fuel Mgmt) and AFM AND Start/Stop for 2019 vehicles.  See table below for 2019 GM trucks.

  • Available in 4 LED Colors:

$199.00 USD

30 Day Money Back Guarantee

Get the most out of every mile.

Full Power

Range AFM Disabler keeps you in full power 100% of the time.

  • No more shuddering
  • No more dropping cylinders

No More Annoying Start/Stop!

  • No more hesitation when restarting after stopping in traffic!
  • No more jerky/lagging throttle response from a full stop

Fast and Easy Setup

Simply plug into your onboard OBD-II port and it
instantly begins working to eliminate the AFM system.

  • No tools needed
  • Remove to uninstall


The power and control you need in any situation.

  • Bad weather
  • Off road
  • Carrying heavy loads

Safe & Reversible

Disables Stop/Start for all GM eAssist and Start/Stop vehicles!

The Range AFM Disabler does not reprogram your factory ECU.

  • Leaves no trace. Unplug it to return to factory settings
  • Fits all V6 and V8 General Motors (GM) active fuel management
     (AFM) vehicles, includes cars, trucks, and SUVs.

View list of supported vehicles »

Start/Stop Vehicles in addition to the above list: