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Four SeasonsPart #: 20679
Four Seasons 20679 HVAC Blower Motor Resistor - Front or Rear
68 vehicles fit this part
Select your vehicle to confirm fitment
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Resistor Block, Front
Fitment: Cadillac, Chevrolet, and GMC, Escalade, Escalade EXT, Avalanche 1500, Avalanche 2500, C1500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, and Silverado
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Not what you need? See all HVAC Blower Motor Resistor options
Overview of Four Seasons Resistor Block 20679
The Four Seasons Resistor Block 20679 is designed to regulate the blower motor speed in HVAC systems for select General Motors vehicles. This resistor block features a variable speed control and is engineered to ensure reliable performance in models such as the Chevrolet Silverado and GMC Sierra.
- Connector Gender: Female / male
- Connector Shape: Rectangular
- Number of Terminals: 3 / 2
- Speed Control: Variable
- Type: Switches
Detailed Product Description
This HVAC blower motor resistor block from Four Seasons is a critical component that controls the variable speed of the blower motor in your vehicle’s heating and cooling system. The part number 20679 is specifically designed with a rectangular connector shape and a combination of female and male connectors, accommodating 2 to 3 terminals. This configuration allows for precise speed regulation, ensuring optimal airflow inside the cabin.
The resistor block is compatible with a range of GM trucks and SUVs, including the Cadillac Escalade, Chevrolet Avalanche 1500 and 2500, GMC Sierra 1500 through 3500 HD, and the Chevrolet Suburban and Tahoe. Its design supports variable speed switching, which is essential for maintaining consistent HVAC performance across different fan settings.
About the Four Seasons Resistor Block Product Line
The Four Seasons Resistor Block product line focuses on delivering reliable HVAC components that meet OEM specifications. The Resistor Block 20679 is part of this line, providing a durable and precise blower motor resistor solution for various GM vehicles. This product line emphasizes compatibility and performance, ensuring that each resistor block integrates seamlessly with the vehicle’s existing HVAC system.
Common Applications and Issues Resolved
- Restores proper blower motor speed control in Cadillac Escalade and GMC Yukon models
- Fixes inconsistent or non-functioning fan speeds in Chevrolet Silverado and Sierra trucks
- Eliminates blower motor failure caused by faulty resistor blocks in Suburban and Tahoe vehicles
- Addresses HVAC blower motor issues related to connector or terminal wear
- Improves cabin comfort by ensuring variable speed operation of the blower motor
Installation Notes and Tips
- Ensure the vehicle is powered off before beginning installation
- Verify connector orientation matches the rectangular female/male design
- Check the number of terminals (2 or 3) to confirm compatibility with your vehicle’s wiring harness
- Inspect the blower motor and related components for wear or damage during replacement
- Consult the vehicle’s service manual for specific removal and installation procedures
Quality Assurance and Warranty
Four Seasons manufactures the Resistor Block 20679 to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. This ensures confidence in the part’s reliability when installed in compatible Cadillac, Chevrolet, and GMC models.
| Brand | Four Seasons |
|---|---|
| Part Number | 20679 |
| Position | Resistor Block, Front |
| Connector Gender | Female / Male |
| Connector Shape | Rectangular |
| Description | Resistor Block |
| Number of Terminals | 3 / 2 |
| Speed | Variable |
| Type | Switches |
This part fits 68 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2002 | Cadillac | Escalade | Front | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2002 | Cadillac | Escalade EXT | Front | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2002 | Chevrolet | Avalanche 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Avalanche 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | C1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Silverado 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Silverado 1500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Silverado 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Silverado 2500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Silverado 3500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Suburban 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Suburban 1500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Suburban 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Suburban 2500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | Chevrolet | Tahoe | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Sierra 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Sierra 1500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Sierra 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Sierra 2500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Sierra 3500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Yukon | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Yukon XL 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Yukon XL 1500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2002 | GMC | Yukon XL 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2002 | GMC | Yukon XL 2500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2001 | Chevrolet | Silverado 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Silverado 1500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Silverado 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Silverado 2500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Silverado 3500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Suburban 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Suburban 1500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Suburban 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Suburban 2500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | Chevrolet | Tahoe | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Sierra 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Sierra 1500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Sierra 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Sierra 2500 HD | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Sierra 3500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Yukon | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Yukon XL 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Yukon XL 1500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2001 | GMC | Yukon XL 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2001 | GMC | Yukon XL 2500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2000 | Chevrolet | Silverado 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Silverado 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Suburban 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Suburban 1500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Suburban 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Suburban 2500 | Rear | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | Chevrolet | Tahoe | 5.7L | V8 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |
| 2000 | Chevrolet | Tahoe | 4.8L | V8 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |
| 2000 | Chevrolet | Tahoe | 5.3L | V8 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |
| 2000 | GMC | Sierra 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | GMC | Sierra 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | GMC | Yukon | SLT | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | ||
| 2000 | GMC | Yukon | SLE | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | ||
| 2000 | GMC | Yukon | Denali | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | ||
| 2000 | GMC | Yukon XL 1500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | GMC | Yukon XL 1500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 2000 | GMC | Yukon XL 2500 | Front | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 2000 | GMC | Yukon XL 2500 | Rear | Compatible with HVAC systems featuring Automatic Temperature Control (ATC).; Resistor Block | |||
| 1999 | Chevrolet | Silverado | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 1999 | Chevrolet | Silverado 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 1999 | Chevrolet | Silverado 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 1999 | GMC | Sierra 1500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block | |||
| 1999 | GMC | Sierra 2500 | N/A | Only compatible with automatic A/C equipped vehicles.; Resistor Block |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
15879416250785206794P1596984253A07029JA1719MT1803SW11391C
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.