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🔴 Power Up Your Drive—No Compromises, Just Pure Performance
The Range Technology RA003R AFM/DFM Disabler is a lightweight, plug-and-play device designed for select GM vehicles that disables the Active Fuel Management system without ECU reprogramming. It ensures your engine runs on full cylinders 100% of the time, delivering consistent power and eliminating shuddering, all while preserving your factory warranty.
| Asin | B08941LBBR |
| Best Sellers Rank | #67,390 in Automotive (See Top 100 in Automotive) #13 in Car Engine Management Systems |
| Brand | Range Technology |
| Customer Reviews | 4.5 4.5 out of 5 stars (229) 4.5 out of 5 stars |
| Date First Available | 15 May 2020 |
| Exterior | Machined |
| Item Model Number | SB-122AMG |
| Item Weight | 9.07 g |
| Manufacturer | Range Technology |
| Manufacturer Part Number | RA003R |
| Model | RA003R |
| Product Dimensions | 10.16 x 10.16 x 2.54 cm; 9.07 g |
| Special Features | lightweight |
User
Love this, plug and play. New truck!
My truck is a 2017 gmc sierra 1500 with a 6.2motor, 8 speed trans. It has been a night and difference for the better. Better fuel mileage, smoother shifts, more power at any given moment. My truck is a beast let out of its cage, or the perfect work horse pulling away. I have had this in my truck for three months. No shaking or hesitant shifts, just a very happy truck. Worth every penny. Just buy and thank me later.
User
easy install well worth it
easy install,instantly sounded different, better performance all across the board,truck shifts better, gas mileage on day to day driving was a tad bit better,on a highway trip towing an atv trailer my gas mileage wasnt as good but a decent trade off for better power on the hills, will i keep it installed? most definatley!
User
10 month review and MA state inspections PASS
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 allAbsolutely love the Range AFM disabler
User
Its cool
He gets the job done, although sometimes it randomly does not work. I noticed it because my auto stop will engage.
User
Different truck
This has changed driving feel of this truck. Im using on a 2021 GMC Acadia. As good as sport mode and no auto stop. Very happy with this product. Don't be cheap. Buy the good one. Remember, it's your cars software you are changing. Also eliminates vibration when lugging in V4 mode at low speed
Trustpilot
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