Global Parts 3411318 A/C Expansion Valve - Rear

A/C Expansion Valve for Rear HVAC Service

Global Parts 3411318 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. This part is a direct-fit service item for select Chevrolet and GMC rear air conditioning applications.

Key Features

• Expansion valve/orifice tube design for refrigerant flow control
• Helps regulate refrigerant before the evaporator
• Built for rear A/C service on select GM vans and SUVs
• Global Parts 3411318 replacement for maintenance and repair work
• Cross-references UAC EX5668C for the same application

Detailed Description

Global Parts 3411318 is used in rear HVAC systems on 1992-1993 Chevrolet Astro, 1992-1993 GMC Safari, 1994-1995 Chevrolet C1500 Suburban, 1994-1995 Chevrolet C2500 Suburban, 1994-1995 Chevrolet K1500 Suburban, 1994-1995 Chevrolet K2500 Suburban, 1995 Chevrolet Suburban 1500, 1994-1995 GMC C1500 Suburban, 1994-1995 GMC C2500 Suburban, 1994-1995 GMC K1500 Suburban, 1994-1995 GMC K2500 Suburban, 1995-1996 Chevrolet Tahoe, and 1995-1996 GMC Yukon, rear. The valve slows refrigerant entering the evaporator so the system can absorb heat more effectively. Global Parts 3411318 is a practical replacement when servicing rear A/C on Chevrolet Tahoe, GMC Yukon, and related GM platforms.

Common Repair Symptoms

• Weak rear cabin cooling
• Uneven evaporator performance
• Restricted refrigerant flow at the rear A/C circuit
• Service-related loss of cooling efficiency
• Need for a replacement during A/C system service

Installation Notes and Tips

Replace the expansion valve/orifice tube during A/C service, and verify the system is properly evacuated and recharged after installation. Inspect related seals, lines, and the evaporator circuit for contamination or restriction before returning the vehicle to service. Confirm rear-position fitment for the specific Chevrolet or GMC application before ordering.

Quality Assurance

Global Parts recommends replacing the expansion valve/orifice tube each time the A/C system is serviced. This part cross-references UAC EX5668C for the same application.