Dorman 977-017 Fuel Injection Throttle Body

Overview of the Dorman 977-017 Electronic Throttle Body

The Dorman 977-017 electronic throttle body is designed to provide precise throttle control for a range of GM and related vehicles. Engineered with a durable aluminum housing and integrated throttle position sensor, this component supports efficient fuel delivery and engine performance.

• Compatible with Buick, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and Saab models
• Inlet and outlet diameter of 3.031 inches for consistent airflow
• Electronic throttle body with integrated throttle position sensor
• Non-flanged inlet and flanged outlet design
• Blade-type electrical connector with 8 terminals
• Constructed from lightweight aluminum for durability

Technical Details and Features

The Dorman 977-017 throttle body features a 3.031-inch bore diameter, matching the inlet and outlet diameters to ensure smooth air intake and fuel injection. Its electronic design includes a built-in throttle position sensor, which provides accurate feedback to the engine control unit for optimal throttle response. The throttle body uses a blade-type electrical connector with eight terminals, facilitating reliable electrical connections. The housing is made from aluminum, offering strength while minimizing weight. This throttle body is designed with a non-flanged inlet and a flanged outlet, supporting secure attachment within the fuel injection system.

Compatible Vehicles and Applications

This fuel injection throttle body is compatible with a variety of vehicles, including:

• Buick models such as the Rainier and Rendezvous
• Chevrolet models including the Impala, Monte Carlo, Colorado, and Trailblazer
• GMC models like the Canyon, Envoy, Envoy XL, Envoy XUV, and Trailblazer EXT
• Hummer H3
• Isuzu Ascender and i-350/i-370
• Oldsmobile and Pontiac Grand Prix
• Saab 9-7x

Use of the Dorman 977-017 throttle body ensures compatibility with gas fuel systems requiring precise electronic throttle control.

Common Issues Addressed by This Throttle Body

• Erratic or unresponsive throttle behavior
• Check engine light triggered by throttle position sensor faults
• Reduced engine performance or stalling at idle
• Poor fuel efficiency due to improper air-fuel mixture
• Throttle body mechanical wear or electronic failure

Installation Notes and Tips

Installation of the Dorman 977-017 throttle body requires removal of the existing throttle body and careful connection of the blade-type electrical connector. Note that this product does not include a gasket or seal, so ensure the use of appropriate sealing components during installation. The throttle body is not adjustable and does not come with a throttle body spacer or idle air control motor. Proper torque specifications should be followed to avoid damage to the aluminum housing.

Quality Assurance and Warranty

Dorman manufactures this throttle body to meet or exceed OEM specifications, using durable materials such as aluminum for the housing and reliable electronic components. The product includes a throttle position sensor to maintain accurate engine management. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts to ensure customer confidence and product reliability.