Four Seasons 20058 A/C Compressor Cut-Out Switch

Reliable A/C Compressor Cut-Off Switch for GM Vehicles

The Four Seasons Pressure Switch 20058 is designed to maintain optimal air conditioning system performance in select Cadillac, Chevrolet, and GMC models. This compressor-mounted pressure switch ensures your vehicle's A/C system operates within safe pressure limits, protecting components and enhancing system longevity.

• Pressure switch with closed compressor open/closed state
• Female connector and fitting with clip-in installation, no threads required
• Operates at 12 volts with two pin terminals
• High cut-out style with operate psi high on at 260 and off at 475 psi
• Durable plastic and metal construction with Weather Pack connector
• Meets or exceeds OEM specifications for reliable fit and function

Four Seasons Pressure Switch Product Line Overview

The Four Seasons Pressure Switch line focuses on precision-engineered pressure switches designed for HVAC systems in automotive applications. The 20058 part number is part of this line, offering a high cut-out pressure switch that mounts directly on the compressor. This ensures accurate pressure monitoring and cut-off to protect the A/C compressor from damage due to excessive pressure.

Detailed Product Description

The Four Seasons 20058 A/C Compressor Cut-Off Switch is a pressure-activated switch that mounts directly on the compressor, featuring a clip-in fitting with female gender connectors for easy installation. It operates at 12 volts and includes two pin-type terminals with a Weather Pack connector for secure electrical connections. The switch is designed to open at 475 psi to prevent overpressure and closes at 260 psi to maintain system operation. Constructed from a combination of plastic and metal materials, this switch is built to withstand the demanding conditions of automotive HVAC systems. Compatible with a wide range of Cadillac, Chevrolet, and GMC models including the Escalade, Silverado, Tahoe, and more, it meets or exceeds OEM standards for quality and reliability.

Common Applications and Issues Addressed

• Prevents compressor damage caused by excessive refrigerant pressure
• Stops A/C compressor operation during high-pressure conditions
• Helps maintain consistent air conditioning performance
• Protects HVAC system components from pressure-related failures
• Ensures proper cycling of the A/C compressor in GM vehicles

Installation Notes and Tips

Installation requires mounting the switch directly on the A/C compressor using the clip-in fitting—no threading necessary. Ensure the female connector is securely attached to the vehicle’s wiring harness. Verify the switch terminals are properly connected to avoid electrical issues. This part is compatible with many Cadillac, Chevrolet, and GMC models, so confirm fitment with your specific vehicle model and year before installation.

Quality Assurance and Warranty

The Four Seasons Pressure Switch 20058 is manufactured to meet or exceed OEM specifications, ensuring dependable performance and durability. The product includes one switch per package and features a Weather Pack connector for enhanced environmental protection. While specific warranty details vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.