Four Seasons 35990 HVAC Blower Control Switch - Front

Overview of Four Seasons Selector Switch 35990

The Four Seasons Selector Switch 35990 is a reliable HVAC blower control switch designed for select Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. Engineered to meet or exceed OEM standards, this switch ensures consistent blower operation for your vehicle's heating and cooling system.

• Compatible with multiple GM makes including Buick, Chevrolet, GMC, Oldsmobile, and Pontiac
• Designed for models such as Astro, Blazer, Bonneville, C10 series, Caprice, Cavalier, and more
• Four-terminal rectangular male connector for secure electrical connection
• Meets or exceeds original equipment manufacturer specifications
• Part number 35990 for precise identification and fitment

Detailed Product Features and Specifications

This HVAC blower control switch from Four Seasons features a rectangular male connector with four terminals, providing a secure and reliable electrical interface. The switch functions as a selector for blower speeds, allowing precise control over the HVAC system's airflow. It is designed specifically for blower applications and is compatible with a wide range of GM vehicles, including popular models like the Chevrolet Blazer, GMC Jimmy, Pontiac Grand Prix, and Buick LeSabre. The part number 35990 ensures accurate replacement and fitment for vehicles requiring this specific blower control switch.

About the Four Seasons Selector Switch Product Line

The Selector Switch line by Four Seasons focuses on HVAC control components that provide dependable performance and durability. This product line includes switches engineered to match or exceed OEM quality, ensuring proper function within the vehicle’s heating and cooling system. The Selector Switch 35990 is part of this line, offering a direct replacement solution for blower control switches in various GM models.

Common Applications and Issues Addressed

• Restores blower motor speed control in HVAC systems
• Resolves intermittent or non-functioning blower switch problems
• Eliminates blower stuck on a single speed or no speed setting
• Fixes electrical connection issues due to worn or damaged terminals
• Improves overall HVAC system responsiveness and comfort

Installation Notes and Tips

When installing the Four Seasons Selector Switch 35990, ensure the vehicle’s battery is disconnected to prevent electrical shorts. Verify the connector’s rectangular male shape and four-terminal configuration match the vehicle’s wiring harness. Carefully align and secure the switch to avoid damage to terminals. Testing the blower operation before final assembly is recommended to confirm proper installation.

Quality Assurance and Warranty Information

Four Seasons manufactures the Selector Switch 35990 to meet or exceed OEM specifications, providing reliable performance and durability. This part undergoes quality control testing to ensure compatibility and function. Warranty coverage details should be confirmed with the distributor or retailer, as Four Seasons typically offers limited warranties on their HVAC components.