Delphi AS10261 Ignition Knock (Detonation) Sensor

Delphi AS10261 Knock Sensor Overview

Delphi AS10261 is an ignition knock (detonation) sensor built for vehicles that rely on accurate knock detection to manage spark timing and engine performance. With Delphi’s OE heritage and more than 100 years of supplier experience, this sensor brings factory-style engineering to a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Saturn, Hummer, and related applications.

Compatible With 2004-2020 Chevrolet Silverado, Express, Tahoe, Suburban, Camaro, Corvette, and more, this Delphi AS10261 sensor is a direct-fit emission control sensor replacement for many GM platforms.

Key Features

• Ignition knock (detonation) sensor for engine knock detection
• Delphi part number AS10261
• Pin terminal type with 2 male terminals
• Female oval connector with 1 connector interface
• Bolt-on mounting type for a secure installation
• Includes the sensor and instruction sheet
• OE-focused design backed by Delphi’s supplier experience

Detailed Description

The Delphi AS10261 knock sensor monitors engine vibration patterns and sends signal data to the vehicle’s control system so timing adjustments can be made when detonation is detected. That function is important on GM trucks, SUVs, and performance cars such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac CTS, and Chevrolet Corvette, where precise knock control supports smooth operation and consistent drivability. Delphi builds this replacement part using OE knowledge developed through decades of original-equipment supply.

This part cross-references Standard Ignition KS211 for the same application.

What It Helps Address

• Knock sensor fault codes
• Audible pinging or spark knock under load
• Reduced engine performance from incorrect timing control
• Check engine light related to detonation sensor signals
• Rough running caused by inaccurate knock detection

Installation Notes and Tips

Verify connector shape, terminal style, and mounting type before installation. The Delphi AS10261 uses a bolt-on design with a female oval connector and pin terminals, so matching the original sensor connection is important for proper fitment. Follow the included instruction sheet and inspect the mounting surface and wiring connector for corrosion or damage before installing the replacement sensor.

Fits 2007-2013 Chevrolet Silverado 1500, N/A; fits 2007-2019 Chevrolet Silverado 2500 HD, N/A; fits 2007-2019 Chevrolet Silverado 3500 HD, N/A; fits 2008-2020 Chevrolet Express 2500, N/A; fits 2008-2020 Chevrolet Express 3500, N/A; fits 2007-2014 Chevrolet Tahoe, N/A; fits 2007-2014 GMC Sierra 1500, N/A; fits 2007-2019 GMC Sierra 2500 HD, N/A; fits 2007-2019 GMC Sierra 3500 HD, N/A; fits 2009-2015 Cadillac CTS, N/A.

Quality Assurance

Delphi draws on OE heritage and supplier experience built over more than a century, and that engineering background is reflected in the AS10261 replacement sensor. The result is a service part developed with factory-style fitment and signal performance in mind for a broad range of GM vehicles.