Global Parts 1711425 HVAC Pressure Switch

HVAC Pressure Switch for GM A/C Protection

Global Parts 1711425 is an HVAC pressure switch used in GM air conditioning systems to send pressure feedback to the engine management system. On modern vehicles, the ECM uses this signal to manage A/C operation; on earlier applications, the switch can directly shut the compressor off to help prevent damage from excessive pressure.

This HVAC pressure switch features a 2 spade threaded design and is used on a wide range of Chevrolet, GMC, and Cadillac trucks and SUVs, including Silverado, Sierra, Tahoe, Yukon, and Escalade applications.

Key Features

• HVAC pressure switch for A/C pressure monitoring and compressor protection
• 2 spade threaded connection for the listed applications
• Used in high pressure cutout circuits on GM HVAC systems
• Direct-fit replacement for many Chevrolet, GMC, and Cadillac models
• Global Parts 1711425 cross-references Dorman OE Solutions 22-231 and Four Seasons 36655 for the same application

Detailed Description

Global Parts 1711425 is a pressure-sensitive HVAC switch that reports refrigerant system pressure to the vehicle control system. In GM trucks and SUVs, this function helps the ECM regulate A/C compressor operation and can interrupt compressor engagement when pressure rises beyond the safe range. That makes it an important service part for Chevrolet Silverado and Tahoe models, GMC Sierra and Yukon models, and Cadillac Escalade applications that use a high pressure cutout switch.

Compatible With 1994-2007 Chevrolet, GMC, and Cadillac vehicles listed in the fitment data, including 1999-2002 Chevrolet Silverado 1500, 1995-2002 Chevrolet Tahoe, 1994-2006 GMC Yukon, and 1999-2002 GMC Sierra 1500. Part number 1711425 is also referenced by Gates 22231 and UAC SW11164C.

What It Helps Solve

• A/C compressor cycling caused by a failed pressure switch
• No compressor shutoff during high-pressure conditions
• Incorrect pressure feedback to the ECM
• Intermittent HVAC operation on GM trucks and SUVs
• Faults related to the high pressure cutout circuit

Installation Notes and Tips

Verify the connector style before installation; this unit uses a 2 spade threaded configuration. Confirm the vehicle uses the listed high pressure cutout application and compare the original switch to the replacement part number 1711425 before service. Some listed vehicles note compatibility with pigtail part number 1711880.

For fitment, check the exact year, make, and model in the application list. This part is commonly used on Chevrolet Silverado, GMC Sierra, and Cadillac Escalade platforms, but the correct application depends on the vehicle’s HVAC system configuration.

Quality Assurance

Global Parts supplies replacement HVAC components for service applications across GM platforms. This part is built for the listed pressure-switch function and application-specific fitment requirements.