HOKZVIATMOTOELECS Dual-Speed Electric Fan Control Wiring Harness Kit for Chevy/GMC 34-inch Radiator, OEM Fit

HOKZVIATMOTOELECS 674-00923 is a dedicated dual-speed electric fan control wiring harness kit built to replace or upgrade stand-alone fan controls on select Chevy and GMC trucks with 34-inch radiators.

This harness kit supplies the wiring, terminals and connectors you need to operate a two-speed electric radiator fan on compatible Chevy Silverado, Avalanche, Suburban, Tahoe and GMC Sierra or Yukon models. It’s manufactured to match OEM wiring specifications, uses durable materials rated for heat and oil exposure, and arrives factory-tested for continuity so installation goes smoothly when your vehicle requires an independent fan control solution.

Will this harness fit my truck?

Fit depends on model year and radiator width. This particular kit is designed for vehicles that use a stand-alone electric fan control with a 34-inch radiator; it is not universal for all Silverado or Yukon variants. Check the vehicle’s radiator width and existing control setup before buying to confirm compatibility.

• Compatible with Chevy Silverado, Avalanche, Suburban, Tahoe and GMC Sierra, Yukon models requiring stand-alone electric fan control.
• Specifically built for 34-inch-wide radiators—measure your radiator to ensure a match.
• Works on both dual-speed fan motors where OEM wiring accepts a separate control harness.

How is this harness built for durability and safety?

Components are made from materials selected to resist high under-hood temperatures, oil contact and general wear. Each wire and terminal is manufactured to OEM tolerances, and factory testing confirms electrical continuity and resilience against common automotive conditions. That reduces the risk of premature failure or electrical faults.

• Premium heat-resistant insulation on wires to withstand engine bay temperatures.
• Oil-resistant jacketing and sealed terminals to prevent corrosion and shorts.
• Factory-tested continuity to validate connections before shipping.

What do I get in the kit and how easy is installation?

The kit includes the full wiring harness with matching connectors and terminals designed to plug into the vehicle’s fan control locations. Because it’s built to OEM specs, the harness often installs using existing mounting points and plugs; straightforward wiring knowledge or a professional installer makes for the fastest, most reliable result.

• Complete wiring harness with factory-style connectors and terminals.
• Plug-and-play compatibility where vehicle matches harness design—minimal splicing.
• Clear wiring layout that follows OEM routing to simplify installation.

What support or warranty comes with the product?

HOKZVIATMOTOELECS provides a 12-month support window for this harness, plus customer service assistance for questions about fitment and installation. If anything arrives damaged or fails under normal use within the warranty period, contact their support for troubleshooting or replacement options.

• 12-month limited warranty covering manufacturing defects under normal use.
• Responsive customer service for fitment and installation questions.
• Guidance to confirm radiator width and vehicle model compatibility before install.

Who is this for? This wiring harness kit is aimed at owners and technicians working on Chevy Silverado, Avalanche, Suburban, Tahoe or GMC Sierra and Yukon vehicles that use a stand-alone electric fan control and have a 34-inch radiator. It’s ideal for those replacing a worn OEM harness, upgrading to a dedicated two-speed electric fan setup, or restoring proper fan control after engine or radiator work. If your vehicle’s radiator differs in width or the fan uses an integrated control module, verify fitment or seek an alternative harness tailored to your specific configuration.