Four Seasons 39136 A/C Expansion Valve - Rear

Four Seasons 39136 Expansion Valve Overview

The Four Seasons 39136 A/C expansion valve is a TXV-style HVAC flow restrictor built for R134A systems and finished in brass. It regulates refrigerant flow into the evaporator to support stable rear air conditioning performance in the vehicles listed below.

Compatible With rear A/C service on 2000-2007 Chevrolet Suburban 1500, 2000-2007 Chevrolet Suburban 2500, 2000-2007 GMC Yukon XL 1500, 2000-2007 GMC Yukon XL 2500, and 2003-2006 Cadillac Escalade ESV. This part number is also referenced as Four Seasons 39136 for direct replacement matching.

Key Features

• TXV-style A/C expansion valve for refrigerant metering
• Brass construction
• Configured for R134A refrigerant systems
• Rear HVAC application
• Direct replacement for listed vehicle fitments

Detailed Product Description

The Four Seasons Expansion Valve line focuses on refrigerant control at the evaporator inlet, where accurate flow regulation is critical to rear cabin cooling performance. The Four Seasons 39136 is specified as a brass TXV for R134A systems and is used in rear HVAC layouts on select GM full-size SUVs, including Chevrolet Suburban, GMC Yukon XL, and Cadillac Escalade ESV applications. If you are replacing a worn or restricted rear A/C metering component, this valve provides the correct part type and refrigerant compatibility for the listed vehicles. Cross-reference part numbers include UAC EX5734C and Global Parts Distributors LLC 3411320 for the same application.

Common Issues This Part May Address

• Rear A/C outlet air that is warmer than expected
• Erratic evaporator refrigerant metering
• Restricted refrigerant flow at the expansion valve
• Loss of rear cabin cooling performance
• Service replacement for a leaking or sticking TXV

Installation Notes and Tips

Verify the vehicle uses an R134A rear HVAC system before ordering. Match the valve to the rear position shown in the fitment data and confirm the original part number or interchange reference during service. Proper evacuation, leak checking, and system recharge procedures should be followed after replacement to restore correct A/C operation.

Quality Assurance

Four Seasons is a recognized aftermarket brand for HVAC service parts, and this expansion valve is cataloged for direct-fit replacement on the listed applications. Part number 39136 is built to match the specified vehicle and refrigerant requirements for the confirmed fitments.