Dorman 47077 Vacuum Reservoir

Reliable Vacuum Reservoir for GM Vehicles

The Dorman 47077 vacuum reservoir is designed to support the emission control vacuum system in select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models. Constructed from durable black plastic, this vacuum storage canister ensures consistent vacuum supply for proper system operation.

• Durable black plastic construction for long-lasting use
• Includes one vacuum port and one hose connector
• Compatible with a wide range of GM vehicles including Chevrolet Blazer, GMC Sierra, Cadillac Allante, and Pontiac Firebird
• Package contains one vacuum storage canister
• Mounting hardware not included for flexible installation options

Product Details and Specifications

The Dorman 47077 vacuum reservoir is engineered to maintain vacuum pressure within the emission control system, helping to regulate components such as the EGR valve and HVAC controls. Its single vacuum port and hose connector simplify integration into existing vacuum lines. The black plastic material offers resistance to corrosion and heat, suitable for under-hood environments. This vacuum storage canister is compatible with numerous GM models, including the Chevrolet Camaro, GMC Sierra 1500, Buick LeSabre, and Pontiac Grand Prix, among others.

Compatible Vehicles and Applications

This vacuum reservoir is compatible with various GM makes and models, including:

• Buick LeSabre, Century, and Regal
• Cadillac Allante and DeVille
• Chevrolet Blazer, Camaro, Caprice, and Impala
• GMC Sierra 1500, Jimmy, and Suburban
• Oldsmobile Cutlass and Delta 88
• Pontiac Firebird, Grand Am, and Sunbird

Common Issues Addressed by the Vacuum Reservoir

• Inconsistent vacuum pressure causing emission control malfunctions
• HVAC system vacuum leaks affecting climate control performance
• Faulty EGR valve operation due to insufficient vacuum supply
• Engine performance issues related to vacuum system failures
• Check engine light triggered by vacuum system faults

Installation Notes and Tips

Installation of the Dorman 47077 vacuum reservoir requires routing the vacuum hose to the single vacuum port and securing the canister in a suitable location within the engine bay. Since mounting hardware is not included, ensure you have appropriate brackets or clamps for a secure fit. Verify vacuum line connections are tight to prevent leaks. Refer to the vehicle’s service manual for specific vacuum routing diagrams and torque specifications.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 47077 vacuum reservoir undergoes quality checks to ensure durability and reliable performance in emission control systems. While mounting hardware is not included, the part is backed by Dorman’s limited warranty against defects in material and workmanship, providing confidence in its long-term use.