674-00923 Dual Speed Electric Fan Control Harness with Relay for Chevy Silverado Avalanche Suburban 1999-2007 | GDUKOP
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Description
xOverview
The GDUKOP 674-00923 Dual Speed Electric Fan Control Wiring Harness Kit with Relay is built to support upgraded cooling systems and retrofit projects. It enables dual fans to run at low or high speed, giving you flexible temperature management across a range of driving conditions. Designed with 34-inch radiators in mind, this kit aims to provide reliable operation in demanding engine bays. If you encounter wiring pin or connection issues, refer to Main Image 8; for harness installation guidance, consult Main Image 7.
Compatibility and fitment
This harness is crafted to suit a wide array of GM trucks and SUVs from 1999 to 2007, including Chevrolet Silverado 1500/2500 Classic, Avalanche 1500/2500, and Suburban 1500/2500; GMC Sierra 1500/2500/3500 Classic and Yukon; Cadillac Escalade EXT/ESV. Review the product images for precise model references before purchasing.
What’s included and build quality
Precise, OE-style construction with automotive-grade wiring and weatherproof connectors ensures durable performance in harsh engine bays. The kit arrives as a complete stand-alone system with relays, fuses, and connectors ready for straightforward wiring.
- Dual-speed control supports low and high speed operation
- Heat-resistant wiring for long-term reliability
- Stand-alone design with relays, fuses, and connectors for simple installation
- Replacement Part Number 674-00923 reflects OE-style accuracy
Key benefits and practical use cases
This kit is ideal for upgrades or retrofits where flexible cooling control is desired. It helps manage engine temperatures more responsively during spirited driving or towing while preserving electrical reliability in demanding conditions.
- Independent dual-fan control offers adaptable cooling management
- Durable, weatherproof harness supports engine bay exposure
- Complete kit reduces the need for multiple components
- OE-standard manufacturing supports dependable operation
Notes and installation tips
Follow the guidance in Main Image 7 for harness installation and Main Image 8 for wiring pins or connections to avoid common issues.
FAQ
Q: What vehicles is the 674-00923 kit compatible with?
A: Chevrolet Silverado 1500/2500 Classic, Avalanche 1500/2500, Suburban 1500/2500; GMC Sierra 1500/2500/3500 Classic, Yukon; Cadillac Escalade EXT/ESV.
Q: What benefits does this stand-alone harness offer?
A: Independent dual-fan control, simple wiring, and a durable, weather-resistant setup for retrofits.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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