Global Parts 3411256 A/C Expansion Valve - Rear

A/C Expansion Valve for Rear HVAC Service

Global Parts 3411256 is an A/C expansion valve for rear HVAC systems. It meters refrigerant flow before the evaporator so the system can use cooling capacity efficiently in supported Chevrolet and GMC vans and full-size models.

• Metric fittings with a 16" capillary
• Rear A/C flow restrictor application
• Designed for refrigerant control before the evaporator
• Direct replacement style for service work on the A/C system

Fitment Details

• Fits 1996-1998 Chevrolet Express 1500, rear
• Fits 1996-1998 Chevrolet Express 2500, rear
• Fits 1996-1998 Chevrolet Express 3500, rear
• Fits 1993-1996 Chevrolet G30, rear
• Fits 1993-1995 Chevrolet G10, rear
• Fits 1993-1995 Chevrolet G20, rear
• Fits 1996-1998 GMC Savana 1500, rear
• Fits 1996-1998 GMC Savana 2500, rear
• Fits 1996-1998 GMC Savana 3500, rear
• Fits 1993-1996 GMC G3500, rear
• Fits 1993-1995 GMC G1500, rear
• Fits 1993-1995 GMC G2500, rear

How It Works

The expansion valve/orifice tube slows refrigerant before it enters the evaporator, helping the refrigerant absorb heat more effectively. Global Parts recommends replacing the expansion valve/orifice tube whenever the A/C system is serviced, especially on rear HVAC repairs for Chevrolet Express, GMC Savana, and earlier G-series applications. This part cross-references UAC EX7413PC and Dorman - HELP 38654 for the same application.

Common Repair Symptoms

• Weak rear A/C cooling
• Erratic evaporator performance
• Restricted refrigerant flow at the rear HVAC circuit
• Service-related contamination in the expansion valve/orifice tube
• Reduced cooling output after A/C system repair

Installation Notes

Verify metric fitting style and 16" capillary length before installation. Replace the component during A/C service after the system has been properly evacuated and inspected, and confirm the rear HVAC circuit is clean before reassembly. Use the vehicle-specific service procedure for Chevrolet and GMC rear A/C systems.

Quality Assurance

Global Parts supplies HVAC service components for OE-style replacement applications. Part number 3411256 is built for the listed rear-fitment vehicles and is intended for professional A/C service on compatible Chevrolet and GMC platforms.