Global Parts 3411522 A/C Expansion Valve - Rear

Global Parts 3411522 A/C Expansion Valve

Global Parts 3411522 is an A/C expansion valve for rear HVAC systems. It meters refrigerant flow before the evaporator so the system can use refrigerant more effectively for cooling. This part is a direct-fit service item for select Chevrolet, Pontiac, Buick, and Saturn rear air conditioning applications.

Key Features

• Rear A/C expansion valve for HVAC refrigerant control
• Helps regulate refrigerant flow into the evaporator
• Fits 2006-2009 Chevrolet Uplander, rear
• Fits 2006-2009 Pontiac Montana, rear
• Fits 2005-2007 Buick Terraza, rear
• Fits 2006-2007 Saturn Relay, rear
• Part number 3411522 for service and replacement matching

Product Details

The expansion valve is a key metering component in the rear A/C circuit. By reducing refrigerant pressure and controlling flow before the evaporator, it helps the system deliver the cooling performance expected from the HVAC design. Global Parts 3411522 cross-references Dorman - HELP 93448 for the same application. It also cross-references 15-50299 for related replacement coverage.

Common Repair Reasons

• Rear A/C vents are not cooling properly
• Refrigerant flow is restricted or inconsistent
• HVAC service requires replacement of the metering valve
• System performance drops after A/C component service
• Expansion valve wear is affecting evaporator operation

Installation Notes

Verify the rear HVAC configuration before ordering. Replace the valve during A/C service when the system is opened, and follow proper refrigerant recovery, evacuation, and recharge procedures. Inspect related seals, lines, and the evaporator circuit for contamination or damage before reassembly. Confirm fitment for your Chevrolet Uplander, Pontiac Montana, Buick Terraza, or Saturn Relay using the vehicle year and rear position listed above.

Quality Assurance

Global Parts recommends replacing the expansion valve/orifice tube each time the A/C system is serviced to help maintain proper refrigerant control and cooling performance.