{"product_id":"range-afm-dfm-disabler-gm-blue-led-ra003b","title":"Range AFM\/DFM Disabler — GM AFM\/DFM Vehicles | OBD-II, Blue LED | RA003B","description":"\u003cp\u003eThe Range AFM\/DFM Disabler is a plug-and-play OBD-II device that disables General Motors Active Fuel Management (AFM) and Dynamic Fuel Management (DFM), keeping the engine in full-cylinder mode (all cylinders active) instead of switching to reduced-cylinder operation. It also disables Auto Start\/Stop. The device does not reprogram the factory ECU and leaves no trace, so unplugging it returns the vehicle to stock. This unit has a blue LED; LED color is cosmetic only and does not change how the device works. Made in the USA.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: AFM\/DFM Disabler\u003c\/li\u003e\n\u003cli\u003eConnection: Plug-in OBD-II\u003c\/li\u003e\n\u003cli\u003eFunction: Disables AFM and DFM (holds full-cylinder mode)\u003c\/li\u003e\n\u003cli\u003eAlso disables: Auto Start\/Stop\u003c\/li\u003e\n\u003cli\u003eECU: No reprogramming, leaves no trace\u003c\/li\u003e\n\u003cli\u003eLED color: Blue (cosmetic only)\u003c\/li\u003e\n\u003cli\u003eFuel type: Gas\u003c\/li\u003e\n\u003cli\u003eOrigin: Made in USA\u003c\/li\u003e\n\u003cli\u003eSold as: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFits GM V6 and V8 vehicles equipped with Active Fuel Management (AFM) or Dynamic Fuel Management (DFM), including cars, trucks and SUVs (for example 5.3L and 6.2L 10-speed applications).\u003c\/p\u003e\u003cp\u003eDoes not support 2022.5 and newer Refresh model trucks or 2021 and newer SUVs. On a 2022 model truck, confirm compatibility by VIN: the 12th digit must be '4' or lower.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e Cancer and Reproductive Harm - www.P65Warnings.ca.gov.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat does the Range AFM\/DFM Disabler do?\u003c\/h5\u003e\u003cp\u003eIt disables GM Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) so the engine stays in full-cylinder mode, and it also disables Auto Start\/Stop.\u003c\/p\u003e\u003ch5\u003eHow does it install?\u003c\/h5\u003e\u003cp\u003eIt plugs into the vehicle's OBD-II port and begins working right away. No tools, wiring or tuning are required.\u003c\/p\u003e\u003ch5\u003eDoes it reprogram my ECU?\u003c\/h5\u003e\u003cp\u003eNo. It does not reprogram the factory ECU and leaves no trace; unplug it to return the vehicle to stock.\u003c\/p\u003e\u003ch5\u003eDoes the LED color change anything?\u003c\/h5\u003e\u003cp\u003eNo. Red, Green and Blue units are identical in function; the LED color is cosmetic.\u003c\/p\u003e\u003ch5\u003eIs this a genuine Range part?\u003c\/h5\u003e\u003cp\u003eYes. It is a genuine Range Technology AFM\/DFM Disabler.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the Range AFM\/DFM Disabler do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It disables GM Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) so the engine stays in full-cylinder mode, and it also disables Auto Start\/Stop.\"}}, {\"@type\": \"Question\", \"name\": \"How does it install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It plugs into the vehicle's OBD-II port and begins working right away. No tools, wiring or tuning are required.\"}}, {\"@type\": \"Question\", \"name\": \"Does it reprogram my ECU?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It does not reprogram the factory ECU and leaves no trace; unplug it to return the vehicle to stock.\"}}, {\"@type\": \"Question\", \"name\": \"Does the LED color change anything?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Red, Green and Blue units are identical in function; the LED color is cosmetic.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a genuine Range part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. It is a genuine Range Technology AFM\/DFM Disabler.\"}}]}\u003c\/script\u003e","brand":"Range","offers":[{"title":"Default Title","offer_id":42559845171248,"sku":"FNBR_RA003B","price":280.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/RNGRA003B.jpg?v=1763108319","url":"https:\/\/berryperformancesales.com\/products\/range-afm-dfm-disabler-gm-blue-led-ra003b","provider":"Berry Performance Sales","version":"1.0","type":"link"}