--- product_id: 321703863 title: "Range Technology RA003R Plug & Play AFM/DFM Active Fuel Management Disabler (Package may vary)" brand: "range technology" price: "£360.94" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/321703863-range-technology-ra003r-plug-and-play-afm-dfm-active-fuel store_origin: GB region: United Kingdom --- # 100% full power all the time Plug & play OBD-II setup Red LED status indicator Range Technology RA003R Plug & Play AFM/DFM Active Fuel Management Disabler (Package may vary) **Brand:** range technology **Price:** £360.94 **Availability:** ✅ In Stock ## Summary > 🔧 Keep your V8 roaring—no compromises, just pure power! ## Quick Answers - **What is this?** Range Technology RA003R Plug & Play AFM/DFM Active Fuel Management Disabler (Package may vary) by range technology - **How much does it cost?** £360.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/321703863-range-technology-ra003r-plug-and-play-afm-dfm-active-fuel) ## Best For - range technology enthusiasts ## Why This Product - Trusted range technology brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Activation:** Starts working immediately with a simple LED confirmation - • **Effortless Installation:** Plug directly into your OBD-II port—no tools or ECU reprogramming needed - • **Unleash Full Engine Power:** Eliminates AFM cylinder drop for consistent V8 performance - • **Warranty-Safe Performance:** Disables AFM without voiding factory warranty or altering ECU - • **Smooth, Shudder-Free Drive:** Say goodbye to power drops and engine shuddering on acceleration ## Overview The RA003R Plug & Play AFM/DFM Active Fuel Management Disabler by Range Technology is a cutting-edge module designed for select GM vehicles. It prevents the factory Active Fuel Management system from deactivating cylinders, ensuring your engine runs at full power 100% of the time. Installation is quick and tool-free via the OBD-II port, with no ECU reprogramming required, preserving your factory warranty. Featuring a red LED indicator, this device eliminates engine shudder and power loss, delivering a smoother, more responsive driving experience. ## Description The Range Technology AFM Disabler Device modules allow your vehicle to run in full cylinder mode at all times, preventing the Active Fuel Management (AFM) system from dropping cylinders. This patented technology is the only product that will disable AFM without reprogramming the factory ECU. You get full power delivery all the time without factory warranty concerns. Review: 2016 Yukon 5.3 so far so great - Have had this in my 2016 Yukon with the 5.3 motor and 6 speed transmission for a month now. Works very well. Vehicle stays in V8 all the time with no other ill effects. I drive a lot of straight lines at 38 - 40mph which is when I would occasionally get the GMC shudder if I was slowing and speeding up often, but this completely eliminated it. I've not noticed any major change in fuel economy at this point, last I looked the average was down 0.1mpg if any. Would recommend this for sure! Easy to start using. Plugged it in to the port under the steering wheel, the lights flashed for 5 seconds or less, then good to go. Started the car and went for a drive, immediately worked. I considered the cheaper options here for $100 or so but decided it was worth another $100 to get the Range brand name and not goof with anything in my car. Just an update after 30 days of use: Still working very well, but I am noticing more of a full 1mpg fuel economy loss. Most of my day to day driving is around town, runs under 5 miles. I live 3 miles from work, so that definitely does not help, and dollars and cents wise is a very small impact, but wanted to update a larger economy loss than originally posted. Review: Does exactly as advertised. - Instantly noticed the difference. All eight cylinders are now firing at all times. No more delayed power and sluggish takeoffs. I would like to have purchased the one that also disables that stupid auto stop system but it was too expensive. At this point, it's instinctive for me to push the disable button every time I start my truck anyway. I know two people with late model GMC and Chevy pickups who've had to replace their engines, at their own expense, because of that defective AFM junk. One of those is still paying for her truck and was put in a real bind when her engine died. I'm all for fuel economy and reducing my fuel costs but I'm not willing to trade fuel savings at the expense of having to purchase a new engine every few years. ## Features - -Compatible with select Buick, Cadillac, Chevrolet, GMC, Isuzu, SAAB, Pontiac, Saturn & Suzuki GM vehicles - -Keeps you in full power 100% of the time, no more shuddering or dropping cylinders - -Fast and easy setup; simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM system - -Does not reprogram your factory ECU, unplug it to return to factory settings - -Red LED version ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08941LBBR | | Best Sellers Rank | #89,266 in Automotive ( See Top 100 in Automotive ) #38 in Automotive Replacement Engine Management Systems #211 in Automotive Replacement Electrical System Relays | | Brand | Range Technology | | Brand Name | Range Technology | | Customer Reviews | 4.6 out of 5 stars 1,051 Reviews | | Item Weight | 0.02 Pounds | | Manufacturer | Range Technology | | Manufacturer Part Number | RA003R | | Model Number | SB-122AMG | | Number of Items | 1 | | Operating System | All | | Power Source | Corded Electric | | UPC | 650245073286 810505026708 860001618617 | | Unit Count | 1 Count | ## Product Details - **Brand:** Range Technology - **Manufacturer:** Range Technology - **Operating System:** All - **Power Source:** Corded Electric - **UPC:** 650245073286 810505026708 860001618617 ## Images ![Range Technology RA003R Plug & Play AFM/DFM Active Fuel Management Disabler (Package may vary) - Image 1](https://m.media-amazon.com/images/I/6111rQ5EM7L.jpg) ## Questions & Answers **Q: Will this fit a 2021 trail boss?** A: At the moment our application guide only shows it working with vehicles up to 2020. Thank you. **Q: Does this fit a 2006 ss monte carlo 5.3l v8?** A: Hi, This is correct or you can see the below URL for correct Range AFM disabler for 2006 Monte Carlo SS 5.3L https://www.amazon.com/s?k=B089NYS6T9&me=A3VJA1PJ4NOGGT&ref=nb_sb_noss Give us a shout for more product details. Thanks, ASSURED AUTOMOTIVE COMPANY MESA, AZ **Q: Will this work with a 2015 5.3 suburban?** A: I have a 2015 Tahoe Z71 and it works great. Especially with an upgraded exhaust. **Q: Correct for 2016 sierra slt 1500 5.3l v8?** A: Hi, For the correct Range AFM disabler for 2016 Silverado 1500 5.3L https://www.amazon.com/s?k=B089NYS6T9&me=A3VJA1PJ4NOGGT&ref=nb_sb_noss We are a RANGE TECH Dealer, and you get full warranty and free tech support. Give us a shout for more product details. Thanks, ASSURED AUTOMOTIVE COMPANY MESA, AZ ## Customer Reviews ### ⭐⭐⭐⭐⭐ 2016 Yukon 5.3 so far so great *by P***T on February 9, 2024* Have had this in my 2016 Yukon with the 5.3 motor and 6 speed transmission for a month now. Works very well. Vehicle stays in V8 all the time with no other ill effects. I drive a lot of straight lines at 38 - 40mph which is when I would occasionally get the GMC shudder if I was slowing and speeding up often, but this completely eliminated it. I've not noticed any major change in fuel economy at this point, last I looked the average was down 0.1mpg if any. Would recommend this for sure! Easy to start using. Plugged it in to the port under the steering wheel, the lights flashed for 5 seconds or less, then good to go. Started the car and went for a drive, immediately worked. I considered the cheaper options here for $100 or so but decided it was worth another $100 to get the Range brand name and not goof with anything in my car. Just an update after 30 days of use: Still working very well, but I am noticing more of a full 1mpg fuel economy loss. Most of my day to day driving is around town, runs under 5 miles. I live 3 miles from work, so that definitely does not help, and dollars and cents wise is a very small impact, but wanted to update a larger economy loss than originally posted. ### ⭐⭐⭐⭐⭐ Does exactly as advertised. *by R***W on April 6, 2024* Instantly noticed the difference. All eight cylinders are now firing at all times. No more delayed power and sluggish takeoffs. I would like to have purchased the one that also disables that stupid auto stop system but it was too expensive. At this point, it's instinctive for me to push the disable button every time I start my truck anyway. I know two people with late model GMC and Chevy pickups who've had to replace their engines, at their own expense, because of that defective AFM junk. One of those is still paying for her truck and was put in a real bind when her engine died. I'm all for fuel economy and reducing my fuel costs but I'm not willing to trade fuel savings at the expense of having to purchase a new engine every few years. ### ⭐⭐⭐⭐⭐ 10 month review and MA state inspections PASS *by C***. on October 9, 2025* I have been extremely impressed with this Range AFM disabler since I first used it in May 2025. Besides the obvious fact that you will use more gas staying in V8 mode. It offsets the mild shudder without it and the brief hesitation when cruising at 75 and open it up. I didn’t notice any battery drain while I left it plugged in. (Always start vehicle with Range plugged into OBD and turned off while still plugged in) Lastly, here in MA we have to have yearly inspections and I unplugged Range minutes before the machine was connected to my OBD. Range has no affect on your MA state inspections. No red flags, no issues at all Absolutely love the Range AFM disabler ## Frequently Bought Together - Range Technology RA003R Plug & Play AFM/DFM Active Fuel Management Disabler (Package may vary) - bbfly-A9 OBD II OBD2 16 Pin Splitter Extension 1x Male and 2X Female Extension Cable Adapter (2FT/60CM) - Range Technology RA003B AFM/DFM Disabler-Blue --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/321703863-range-technology-ra003r-plug-and-play-afm-dfm-active-fuel](https://www.desertcart.co.uk/products/321703863-range-technology-ra003r-plug-and-play-afm-dfm-active-fuel) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-12*