973-407 Front HVAC Fan Blower Motor Resistor
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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.
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Check your OE part
Please double-check both the number & picture of your OE Resistor and your vehicle model carefully before purchasing! -
Premium Materials
Made of robust & durable materials that prevent cracking and failing, ensuring excellent degradation resistance for long-lasting performance -
Saving Solution
Great feeling when your vehicle's AC system works efficiently - Enjoy worthy savings by replacing the superior yet affordable part yourself! -
Fixing AC Symptoms
Stuck on one speed | Does not work on specific/all settings | Does not blow air | Inconsistent fan speed | No air coming from vents
4 SIMPLE STEPS
1. Access to your resistor (usually behind/ under the glove box); 2. Release the 2 screws that secure the resistor. Unplug the resistor connector and the resistor plug; 3. Disconnect the vehicle’s negative battery cable. Replace the old wire harness by cutting the wires and matching them to the new wire harness (take note of where each wire goes); 4. Reinstall with the new resistor. You can put some dielectric grease on in the resistor connector housing to avoid water intrusion.
| Brand | Model Number |
|---|---|
| Replaces OE part number | #973-407, 1580560, 22941007, 3A1041, 8229410070, 8890187700, 89018770, DR780, RU1274, RU1508, RU51, RU581, RU819, RU869 |
| Isuzu | 2005-2008 Isuzu HTR || 2005-2008 Isuzu HVR || 2006 Isuzu HXR |
| Chevrolet Kodiak | 2003-2009 Chevy C4500 Kodiak || 2003-2009 Chevy C5500 Kodiak || 2003-2009 Chevy C6500 Kodiak || 2003-2009 Chevy C7500 Kodiak || 2003-2009 Chevy C8500 || 2003-2009 Chevy C8500 Kodiak |
| Chevrolet Express | 1996-2014 Chevy Express 1500 || 1996-2011 Chevy Express 2500 || 1996-2011 Chevy Express 3500 || 2009-2011 Chevy Express 4500 || 2009-2019 Chevy Express Cargo (Mexico) || 2009-2019 Chevy Express Pasajeros (Mexico) |
| GMC Topkick | 2003-2009 GMC C4500 Topkick || 2004-2009 GMC C5500 Topkick || 2004-2009 GMC C6500 Topkick || 2004-2009 GMC C7500 Topkick || 2004-2009 GMC C8500 || 2004-2009 GMC C8500 Topkick |
| GMC Savana | 1996-2014 GMC Savana 1500 || 1996-2019 GMC Savana 2500 || 1996-2019 GMC Savana 3500 || 2009-2019 GMC Savana 4500 |