AFM Device Compatible with Chevrolet Silverado 1500 V8 5.3L 2010-2018 Models and GM V6 V8 Engines in Various Vehicles, Trucks, and SUVs - White Details: Please see compatibility chart before purchasing. Does not work on every vehicle. Details: AFM/DFM Device Compatible with most GM V6 and V8 vehicles. This device does not currently support the 2022 Refresh model trucks or SUVs..Please confirm the compatibility before ordering it. AFM Device Keeps the vehicle in the v6/V8 mode all the time. Plug and play, easy install without any tools. Keep the factory ECU, not programming the ECU of the vehicle. Note: V6/V8 mode will keep all the cylinder running, the water temperature may increase during driving. This product currently is not compatible with 2019+ 5.3L 10-Speed or 6.2L 10-SPEED models. AFM/DFM device ensures that V6 or V8 GM vehicles operate in full-cylinder mode, preventing the deactivation of cylinders by the active and dynamic fuel management systems. This technology facilitates the disabling of active or dynamic fuel management without the need for reprogramming the factory ECU, and it does not void the manufacturer's warranty. Installation is straightforward – simply plug it into the onboard OBD-II port, and it begins working immediately. If the device is not in use for an extended period, it is advisable to disconnect the AFM/DFM Device. AFM/DFM Disable Device PLUG THEN PLAY. KEEP THE ORIGINAL FACTORY ECU. KEEP YOUR VEHICLE IN V6/ V8 ALL TIME. AFM/DFM Device is not currently compatible with the below model: 2019+ Silverado and Sierra models equipped with 5.3L / 6.2L engine and 10-speed transmissions. ?VERY IMPORTANT SPECIAL REMINDER? Do not leave your device installed on a vehicle that is not driven daily. Unplug device if the vehicle will not be driven for a few days because there may be a draw on the battery in some vehicles. Orders are usually sent out the same or next day after receiving payment. ALL ORDERS COME WITH TRACKING THANKS FOR LOOKING Returns: Returns not accepted on undergarments, tights, sports performance clothing, bras etc. Returns accepted only if we do not describe an item accurately or if an item is damaged due to us not packing your order safely. Returns not accepted for buyers remorse or finding a better price elsewhere. Returns must be approved by us before shipping an order back. Orders that are returned must be packaged safely and received back in the same condition as originally listed. Refunds will not be given if an item has been used, opened or damaged from it's original condition from listing. If an item is deemed approved for return, the refund will be the item price and DOES NOT include shipping cost. A 15% restocking may apply on items returned. If for any reason an order is approved for return and the reason for returning is not a fault of our own, buyers must pay return shipping to send it back to us.