---
product_id: 321703863
title: "Range Technology RA003R Red AFM/DFM Disabler"
brand: "range technology"
price: "$1.41"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/321703863-range-technology-ra003r-red-afm-dfm-disabler
store_origin: US
region: United States of America
---

# 100% full power all the time Plug & play OBD-II setup Red LED status indicator Range Technology RA003R Red AFM/DFM Disabler

**Brand:** range technology
**Price:** $1.41
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Keep your V8 roaring—no compromises, just pure power!

## Quick Answers

- **What is this?** Range Technology RA003R Red AFM/DFM Disabler by range technology
- **How much does it cost?** $1.41 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/321703863-range-technology-ra003r-red-afm-dfm-disabler)

## 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

Optimize the capabilities of your vehicle with the help of this Range Technology AFM/DFM Disabler.Designed to help you take full control of your engine's performance, this simple plug-and-play module disables Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) systems, allowing your engine to run in full cylinder mode at all times so you can enjoy smooth, consistent power whenever you need. Additionally, the AFM/DFM Disabler helps eliminate issues like excessive oil consumption, lifter failure, and rough idle, giving you improved reliability and a stronger, more responsive driving experience.Installation is quick and easy as the module simply plugs into your vehicle's OBD-II port, and instantly disables cylinder deactivation without requiring additional tools or modifications to your vehicle or factory system. It doesn't reprogram your engine control unit (ECU) or leave a trace. Simply unplug it at any time to return your vehicle to stock operation. No need to worry about alterations to your vehicle's system as the disabler is safe for your vehicle's electronics and features built-in power management to prevent battery drain when the vehicle is off.Whether you're towing, off-roading, or daily driving, this AFM/DFM Disabler ensures your engine stays in full power mode for better throttle response, smoother acceleration, and improved performance consistency.

## Features

- Vehicle Fitment: This Range Technology AFM/DFM Disabler was specifically designed to be compatible with your 2004-2019 LaCrosse/Rainier/CTS/Escalade/SRX/STS/Avalanche/Caprice/Corvette/Impala/Acadia/Canyon vehicle equipped with V6/V8 gas engine, and more; See image 2 for full list of compatible vehicles
- Smooth Throttle Response: Improves power at light throttle with all cylinders firing, resulting in improved fuel economy during light acceleration, daily driving, towing, and more
- Full Cylinder Mode: Allows you to run your vehicle in full cylinder mode at all times and disables AFM without reprogramming your vehicle's factory ECU so you can stay in full power mode for a smoother, more responsive driving experience
- Easy Installation: Plugs into the OBD-II port under the dash, providing optimal vehicle support in a matter of seconds
- Buy with Confidence: Is protected against errors or defects in manufacturing under Holley's Limited Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08941LBBR |
| Best Sellers Rank | #561,116 in Automotive ( See Top 100 in Automotive ) #119 in Automotive Replacement Engine Management Systems #2,315 in Automotive Replacement Electrical System Relays |
| Brand | Range Technology |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,072) |
| Date First Available | January 14, 2015 |
| Item Weight | 0.32 ounces |
| Item model number | SB-122AMG |
| Manufacturer | Range Technology |
| Manufacturer Part Number | RA003R |
| Product Dimensions | 4 x 4 x 1 inches |
| Special Features | lightweight |

## Product Details

- **Brand:** Range Technology
- **Manufacturer:** Range Technology
- **Operating System:** All
- **Power Source:** Corded Electric
- **UPC:** 650245073286 810505026708 860001618617

## Images

![Range Technology RA003R Red AFM/DFM Disabler - 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

## 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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-08*