Dorman 977-376 Fuel Injection Throttle Body

OE FIX Electronic Throttle Body

Dorman 977-376 is an electronic fuel injection throttle body built as a standard replacement for select GM applications. It includes the throttle position sensor and a gasket, and it uses Dorman Sensor Shield technology with a proprietary butterfly shaft seal to help reduce future contamination-related failures from moisture and oil intrusion.

Compatible with applications such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, this throttle body is a direct-fit service part for gas-powered vehicles that use an electronic throttle body design.

Key Features

• Electronic throttle body for gas fuel systems
• Dorman Sensor Shield technology helps protect internal electronics from moisture and oil intrusion
• Proprietary butterfly shaft seal adds contamination resistance
• Throttle position sensor included
• Aluminum housing with natural finish
• Flanged inlet design with a single outlet
• Gasket included for installation
• Standard replacement grade

Detailed Description

This Dorman 977-376 throttle body is engineered for vehicles that rely on electronic throttle control and need a replacement for a failed OE unit. The aluminum body and integrated sensor support accurate throttle response, while the Sensor Shield sealing strategy addresses a common failure point caused by contamination inside the throttle assembly. It is a practical replacement for drivers searching for a Chevrolet Silverado 1500 throttle body, GMC Sierra 1500 throttle body, or Cadillac Escalade electronic throttle body with OE-style fitment.

This part cross-references Hitachi Automotive ETB0067 for the same application.

What It Helps Address

• Throttle response issues caused by a worn or contaminated throttle body
• Check engine lights related to throttle position or electronic throttle control faults
• Rough idle from internal throttle body contamination
• Driveability problems tied to moisture or oil intrusion in the throttle assembly
• Replacement needs for stamped OE numbers 12620263, 12678223, or 12713774

Installation Notes and Tips

Verify the OE stamping on the original throttle body before ordering. This part is listed for vehicles stamped 12620263, 12678223, or 12713774 in several applications, including 2015-2021 Cadillac Escalade, 2019-2021 Chevrolet Silverado 1500, and 2019-2021 GMC Sierra 1500. Confirm connector style, terminal count, and intake configuration before installation. A gasket is included; mounting hardware is not included.

Quality Assurance

Dorman OE FIX parts are built to address known failure points in original equipment designs. Part number 977-376 uses a contamination-resistant sealing approach intended to improve service life in demanding throttle body applications.