Standard Ignition ETS312 Exhaust Gas Temperature (EGT) Sensor - Front

Exhaust Gas Temperature Sensor for GM HD Diesel Applications

Standard Ignition ETS312 is an exhaust gas temperature (EGT) sensor with a plug-in attachment method and a female rectangular/oval connector. It uses a 2-blade male terminal layout for direct electrical connection in the exhaust temperature monitoring circuit. This front-position sensor is listed for Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications.

For buyers searching for a front EGT sensor for 2017-2023 Chevrolet Silverado 2500 HD or GMC Sierra 3500 HD diesel trucks, ETS312 provides the correct connector style and mounting interface for the listed vehicles. Standard Ignition ETS312 is also referenced by OE and aftermarket part numbers for the same application.

Key Features

• Exhaust gas temperature (EGT) sensor for emission control systems
• Plug-in attachment method for straightforward electrical connection
• Female rectangular/oval connector with 1 connector interface
• 2 male blade terminals for the specified harness connection
• Front position fitment for listed Chevrolet and GMC HD trucks
• Standard Ignition ETS312 part number for catalog matching and search accuracy

Detailed Description

Standard Ignition ETS312 is an EGT sensor used to monitor exhaust temperature in diesel emission control systems. Accurate exhaust temperature feedback supports the vehicle’s control strategy for protecting exhaust aftertreatment components and maintaining proper system operation. This sensor is cataloged for front installation on 2017-2021 and 2023 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2017-2021 and 2023 GMC Sierra 2500 HD and Sierra 3500 HD models. The part number ETS312 is useful when cross-checking service records, OE references, and replacement catalogs for these GM heavy-duty trucks.

This part cross-references OE and aftermarket numbers such as 12672665 and EGTB10036 for the same application.

What It Helps Address

• Fault codes related to exhaust gas temperature sensor performance
• Incorrect exhaust temperature readings in the emission control system
• Driveability issues caused by inaccurate exhaust monitoring data
• Aftertreatment system concerns tied to sensor signal loss or drift
• Service replacement needs on front-position GM HD diesel applications

Installation Notes and Tips

Verify the front sensor location before installation and match the connector shape, terminal style, and attachment method to the original unit. Inspect the harness connector for heat damage, corrosion, or bent terminals before plugging in the new sensor. Confirm the application by year, make, model, and position for Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD.

Quality Assurance

Standard Ignition supplies replacement electrical and emission control components for service applications, and ETS312 is cataloged to match the listed GM heavy-duty truck fitments and connector specifications.