Product Description
Michigan Motorsports Dual Electric Fan Upgrade Harness | 1999-2006 GM Truck SUV Fan Conversion Kit
Fits 1999-2006 GM Trucks & SUVs 4.8L 5.3L 6.0L | Converts Mechanical Fan to Dual Electric Fans (PCM Controlled)
Upgrade your cooling system and free up horsepower with the Michigan Motorsports Dual Electric Fan Upgrade Harness, designed specifically for 1999-2006 GM trucks and SUVs. This complete plug-and-play style harness allows you to convert from a factory mechanical fan to dual electric fans using your vehicle’s factory PCM for control (PCM tuning required). Featuring integrated power and ground connections along with pinned wires for computer control, this harness is built for a clean, reliable installation. Designed to work seamlessly with 2005+ OEM GM electric fans, this kit includes 40 amp fuses and relays for proper circuit protection and performance. Whether you're improving cooling efficiency, freeing up engine power, or cleaning up your engine bay, this harness delivers a professional-grade solution for your LS-powered truck or SUV. Electric Dual Fan Instructions
Key Features & Benefits
- Complete Fan Conversion Harness: Designed to convert factory mechanical fan setups to dual electric fans for improved cooling performance and efficiency.
- PCM Controlled Operation: Includes pinned wires to allow your factory computer to control fan operation (requires PCM tuning), ensuring proper temperature-based activation.
- Plug & Play with OEM Fans: Connectors are designed to fit 2005+ OEM GM electric fans, making installation straightforward and clean.
- Includes Relays & Fuses: Comes complete with 40 amp fuses and relays to provide proper circuit protection and reliable fan operation under load.
- Performance & Efficiency Upgrade: Helps free up horsepower, reduce engine temperatures, and create additional space in the engine bay compared to mechanical fan setups.
Key Fitments
- GM Truck & SUV Applications: Fits 1999-2006 GM trucks and SUVs equipped with factory mechanical cooling fans.
- Engine Compatibility: Works with 4.8L, 5.3L, and 6.0L LS-based engine computers.
- Fan Compatibility: Designed for use with 2005+ OEM GM dual electric fan assemblies.
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Product Reviews
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Love this product
Very high quality with a very fair price was better that I expected when I ordered it
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easy install plug and play
great product and quality
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Great Quality
Great Harness
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Super easy
Used on an 03 2500hd with the 8.1L. installed on like 15 minutes. Electric fans instantly. Clean and neat install. I would recommend using zip ties to hold the relay connector together, they slide out easy. Minor detail...
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Super nice quality and easy install
Totally worth the buy. Great quality and easy to install. The only thing that was unclear was where to mount the relays, (probably only because I used aftermarket OE style fans vs actual OEM) either way this is a much better option than making your own harness or buying a harness where you also need to install a secondary temp sensor into the block/head/radiator etc to switch the fans on and off. Since this pins into the ecu it essentially functions like OEM which is great.
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Well made
Very well made harness! Worked exactly how I hoped. Will be shopping with Michigan Motorsports in the FUTURE!
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Worked as Advertised!
Item worked as should and was great!
