Dorman 977-909 Fuel Injection Throttle Body

OE FIX Throttle Body for GM Applications

Dorman 977-909 is an electronic fuel injection throttle body built for select Buick, Cadillac, Chevrolet, and GMC vehicles. It addresses a common OE failure point by using Sensor Shield technology and a proprietary butterfly shaft seal to help keep moisture and oil intrusion away from the internal electronics.

Compatible With 2012-2020 Buick Enclave, LaCrosse, and Regal Sportback; 2012-2019 Cadillac CTS, SRX, XTS, and ATS; 2012-2019 Chevrolet Impala and Traverse; and additional GM applications listed below.

• Electronic throttle body construction for gas fuel systems
• Aluminum housing with natural finish
• Throttle position sensor included
• Blade-style connector with 6 terminals
• Gasket included
• Non-flanged inlet design
• Flanged outlet design
• 2.87 in. bore diameter and 2.87 in. inlet diameter
• OE FIX design focused on reducing repeat failures from contamination

This Dorman throttle body, part number 977-909, is engineered as a direct replacement for electronic throttle control systems where the original unit has failed from contamination-related wear. It cross-references Standard Ignition S20219 for the same application. The design supports precise throttle response and restores proper airflow control for GM vehicles such as the Chevrolet Equinox, GMC Terrain, and Cadillac SRX. Part number 977-909 is also referenced by Cardone New 6E-3037 and Cardone Reman 67-3037.

Common Problems This Part Can Address

• Throttle response issues caused by internal electronic contamination
• Check engine lights related to throttle body performance
• Rough idle from a worn or sticking throttle plate
• Acceleration hesitation tied to throttle control faults
• Airflow irregularities in electronic throttle systems

Installation Notes and Tips

Verify connector style, inlet and outlet dimensions, and vehicle calibration before installation. This throttle body includes a gasket, but mounting hardware is not included. After installation, follow the vehicle manufacturer’s relearn or throttle adaptation procedure if required.

Quality Assurance

Dorman OE FIX components are built to address known failure patterns in original equipment parts. This throttle body uses Sensor Shield technology and a shaft seal design intended to reduce contamination-related repeat failures.