Delphi AS10273 Ignition Knock (Detonation) Sensor

Delphi Knock Sensor for GM Applications

Delphi AS10273 is an ignition knock sensor built for accurate engine feedback in a wide range of GM vehicles. It is a direct-fit emission control sensor for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, and Chevrolet Camaro.

Key Features

• Ignition knock (detonation) sensor for engine timing control
• OE-calibrated and tested to support accurate signal output
• Pin terminal design with 1 oval male connector
• 2 male terminals with screw mounting
• Direct replacement part number AS10273
• Cross-references Standard Ignition KS437 for the same application

Detailed Description

Delphi AS10273 is engineered to monitor engine knock and send precise data to the vehicle control system, helping maintain proper ignition timing under changing load and fuel conditions. Delphi validates its sensors to OE standards, with calibration and testing focused on consistent readings and reduced comeback risk. This part number AS10273 is used across many GM platforms, including Chevrolet Malibu, GMC Terrain, Buick Envision, and Cadillac CTS models.

Compatible With 2014-2022 Chevrolet Silverado 1500, 2014-2022 Chevrolet Corvette, 2015-2022 GMC Yukon, and other listed Cadillac, Chevrolet, Buick, and GMC applications. Fits 2013-2019 Cadillac ATS, 2014-2019 Chevrolet Impala, and 2018-2020 Chevrolet Equinox where the OE sensor specification matches this connector and mounting style.

What It Helps Address

• Knock sensor fault codes
• Audible spark knock or detonation concerns
• Rough engine operation caused by inaccurate knock feedback
• Reduced ignition timing control from a failing sensor
• Check engine light conditions related to knock sensor performance

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style before installation. This sensor uses a screw mount and includes a single oval male connector with pin terminals; mounting hardware is not included. Confirm the vehicle’s OE part number and engine application before replacing the sensor, especially on GM trucks, SUVs, and performance models such as Chevrolet Camaro and Cadillac CT6.

Quality Assurance

Delphi sensors are developed and validated to OE standards, with calibration checks intended to deliver accurate readings across the listed vehicle applications. This focus on OE-level testing supports dependable sensor output in GM emission control systems.