Dorman 911-674 Vapor Canister Purge Valve

Overview of Dorman Vapor Canister Purge Valve 911-674

The Dorman Vapor Canister Purge Valve 911-674 is designed for emission control systems in Chevrolet and GMC trucks. Specifically engineered for models like the Sierra 1500, Sierra 1500 Classic, Silverado 1500, and Silverado 1500 Classic, this valve helps regulate fuel vapor flow efficiently.

• Connector hose inside diameter: 0.62 inches
• Single elliptical connector for secure fit
• Durable housing made from both metal and plastic materials
• Two male terminals for reliable electrical connection
• One vacuum port and one inlet port with 0.62 inch inside diameter
• Compact length of 3.38 inches for easy installation
• Includes one vent control valve and mounting bracket
• One mounting hole with 0.35 inch diameter (mounting hardware not included)

Detailed Product Description

The Dorman 911-674 vapor canister purge valve is a critical component in the evaporative emission control system of select Chevrolet and GMC trucks. Its elliptical connector shape and 0.62 inch inside diameter hose connection ensure a precise fit with the vehicle’s vapor lines. The valve housing combines metal and plastic materials to balance durability and corrosion resistance. Featuring two male terminals, it provides a secure electrical interface for proper valve operation. The single vacuum port and inlet port facilitate controlled vapor flow, helping to reduce harmful emissions. Measuring 3.38 inches in length, this valve fits neatly within the engine compartment without interfering with other components. The included mounting bracket allows for stable installation using the single 0.35 inch diameter mount hole.

Compatible Vehicles and Applications

This vapor canister purge valve is compatible with the following vehicles:

• Chevrolet Sierra 1500 and Sierra 1500 Classic
• Chevrolet Silverado 1500 and Silverado 1500 Classic
• GMC Sierra 1500 and Sierra 1500 Classic

It is designed to replace the original equipment part and maintain proper evaporative system function, ensuring compliance with emission standards.

Common Issues Addressed by This Purge Valve

• Check engine light triggered by faulty purge valve operation
• Rough engine idle or stalling due to improper vapor flow
• Failed emissions tests related to evaporative system leaks
• Fuel odor caused by vapor canister leaks
• Reduced fuel efficiency linked to emission control malfunctions

Installation Notes and Tips

Installation requires removal of the old purge valve and replacement with the Dorman 911-674 unit. The elliptical connector and vacuum port should be securely attached to the corresponding hoses. Ensure the two male terminals are properly connected to the vehicle’s wiring harness. Use the included mounting bracket to secure the valve using the existing mount hole. Note that mounting hardware is not included, so retain original fasteners or source appropriate replacements. Verify all connections are tight to prevent vapor leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications. The 911-674 vapor canister purge valve undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to official Dorman documentation for exact warranty terms.