Four Seasons 20339 HVAC Blower Motor Resistor - Front

Reliable HVAC Blower Motor Resistor for GM Trucks and SUVs

The Four Seasons Resistor Block 20339 is designed to restore proper blower motor function in select Cadillac, Chevrolet, and GMC vehicles. This HVAC blower motor resistor ensures consistent fan speed control and meets or exceeds OEM specifications for dependable performance.

• Connector Gender: Female / male
• Rectangular connector shape for secure fit
• 6 / 2 terminal configuration with spade terminal type
• Fixed speed #4 resistor setting
• Meets or exceeds original equipment manufacturer standards

About the Four Seasons Resistor Block Product Line

The Four Seasons Resistor Block line focuses on providing high-quality HVAC blower motor resistors engineered to maintain or restore proper fan speed control in vehicle climate systems. The 20339 resistor block is part of this line, offering a precise fit and reliable electrical performance for various GM trucks and SUVs.

Detailed Product Description

This HVAC blower motor resistor (part number 20339) features a rectangular connector shape with a combination of female and male connectors, ensuring compatibility with the vehicle’s wiring harness. The resistor block includes 6 and 2 terminal points with spade-type terminals, designed for secure and stable electrical connections. The fixed speed #4 resistor setting controls the blower motor speed accurately, contributing to consistent HVAC system operation. This part is engineered to meet or exceed OEM standards, providing a direct replacement for factory-installed resistors in compatible vehicles.

Compatible Vehicles and Common Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe
• GMC Sierra 1500, Sierra 2500, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500
• C1500, Cheyenne, and other related GM truck models

Common Issues Resolved by This Resistor Block

• Inconsistent or non-functioning blower motor speeds
• HVAC fan stuck on one speed setting
• Intermittent blower motor operation
• Overheating or electrical resistance failure in blower motor circuit
• Loss of HVAC climate control responsiveness

Installation Notes and Tips

• Ensure vehicle ignition is off before installation
• Disconnect the battery to prevent electrical shorts
• Locate the blower motor resistor in the HVAC housing under the dashboard or glove box
• Match connector gender and terminal type for proper fit
• Verify secure spade terminal connections to avoid loose contacts

Quality Assurance and Warranty

The Four Seasons Resistor Block 20339 is manufactured to meet or exceed OEM quality standards, ensuring reliable operation and durability. This part undergoes rigorous testing to confirm electrical performance and fitment accuracy. Warranty coverage details are provided by Four Seasons and typically cover defects in materials and workmanship.