Four Seasons 20403 HVAC Blower Motor Resistor

Overview of Four Seasons Resistor Block 20403

The Four Seasons Resistor Block 20403 is a critical HVAC blower motor resistor designed for select Cadillac, Chevrolet, and Saab models. This component ensures proper control of blower motor speeds, maintaining optimal climate control performance in your vehicle.

• Connector Gender: Female
• Connector Shape: Other design / rectangle
• Number of Terminals: 6
• Type: Switches
• Part Number: 20403

About the Four Seasons Resistor Block Product Line

The Resistor Block line by Four Seasons focuses on reliable HVAC components that regulate blower motor speeds through precise electrical resistance. The 20403 resistor block is engineered to meet OEM specifications, providing consistent performance and compatibility with specific vehicle models. This product line supports efficient climate control system operation by managing current flow to the blower motor.

Detailed Product Description

The Four Seasons 20403 resistor block features a female connector with a rectangular design, accommodating six terminals for secure electrical connections. This configuration allows it to function effectively as a switch within the HVAC system, controlling blower motor speed settings. Its design ensures compatibility with the HVAC blower motor circuits in Cadillac, Chevrolet, and Saab vehicles, including models such as the Cadillac Catera, Chevrolet Astra, and Saab 9-3 and BLS.

Common Applications and Issues Addressed

• Restores proper blower motor speed control in HVAC systems
• Resolves blower motor stuck on one speed or no speed
• Fixes intermittent blower motor operation
• Eliminates overheating or burning smell from resistor block failure
• Improves overall HVAC system reliability in compatible vehicles

Installation Notes and Tips

• Ensure vehicle compatibility with Cadillac, Chevrolet, and Saab models listed
• Disconnect battery before installation to prevent electrical shorts
• Verify connector orientation matches the female rectangular design
• Inspect wiring harness and terminals for corrosion or damage before installation
• Follow vehicle-specific service manual instructions for resistor block replacement

Quality Assurance and Warranty

Four Seasons manufactures the 20403 resistor block to meet industry 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 dependable operation and peace of mind when replacing HVAC blower motor resistors in your Cadillac, Chevrolet, or Saab vehicle.