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Description
973-407 Front HVAC Fan Blower Motor Resistor973 407 Front HVAC Fan Blower Motor Resistor Key Features Direct fit replacement for the original equipment blower motor resistor. Restores the function of variable fan speeds for your vehicle's front HVAC system. Kit includes a new resistor and a wiring harness pigtail to repair melted or corroded connectors. Engineered to match the performance and fit of the original component. Package contains: 1 resistor, 1 wiring harness, and butt connectors for
973-407 Front HVAC Fan Blower Motor Resistor
Key Features
- Direct-fit replacement for the original equipment blower motor resistor.
- Restores the function of variable fan speeds for your vehicle's front HVAC system.
- Kit includes a new resistor and a wiring harness pigtail to repair melted or corroded connectors.
- Engineered to match the performance and fit of the original component.
- Package contains: 1 resistor, 1 wiring harness, and butt connectors for splicing.
Replaces / Cross-Reference Part Numbers
- Dorman: 973-407
- OE: 89018778
- OE: 89019351
- OE: 1581638
- OE: 93803636
Compatibility & Fitment
- Fits select Chevrolet and GMC truck and van models.
- Chevrolet Express 1500, 2500, 3500
- Chevrolet C4500, C5500, C6500, C7500 Kodiak
- GMC Savana 1500, 2500, 3500
- GMC C4500, C5500, C6500, C7500 Topkick
When to Replace
- HVAC fan only operates on the highest speed setting.
- Fan speed is uncontrollable or stuck on one speed.
- No air blows from the vents at any fan speed.
- Visible burn marks, corrosion, or melting on the original resistor or its electrical connector.
Installation Tips
- Disconnect the vehicle's battery before beginning installation.
- The resistor is typically located in the HVAC ductwork behind the glove box or on the passenger side of the lower dashboard.
- Inspect the original wiring connector for heat damage or corrosion; use the included pigtail harness for repair if needed.
- Ensure a secure connection when splicing the new harness to prevent overheating and future failure.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 4
Fair product
Size: 30ft, Style: 6C-18AWG
nice product good price, the only issue I had was the sleeve was very loose on the wires so doesn't really hold the wires in place.
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Reviewed in the United States on December 8, 2025
★★★★★ 5
Fantastic to do 1 run and power multiple loads
Size: 30ft, Style: 6C-18AWG
Great for wiring up multiple loads. In my case multiple lighting with different switches so that I can turn them on independently from one another.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Durable, very nice wiring harness.
Size: 50ft, Style: 6C-18AWG
I am updating an emergency vehicle and am using this to run the equipment. It’s easy to work with and good thick wire. Came with nice little Velcro straps for keeping the roll together. The finish is nice on the outer casing. Nice gloss black. Excellent product. In fact I bought another 50 foot roll. And the prices for this is extremely good. Glad I found this wiring.
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Reviewed in the United States on January 31, 2024
★★★★★ 5
Good quality wire
Size: 100ft, Style: 6C-18AWG
Good wire. Nice heaven outer casing. Have used several hundred feet of this for industrial vehicles. It comes in several wire counts. We use the 4 wire and 6 wire mostly and have never found an issue.
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Reviewed in the United States on October 17, 2025
★★★★★ 5
Like the description
Size: 30ft, Style: 6C-18AWG
Good
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Reviewed in the United States on February 23, 2026