The Walker Products Ignition Knock (Detonation) Sensor (part number 242-91039) is a direct-fit replacement for 1998-2007 Buick, Cadillac, Chevrolet, and GMC vehicles with 5.3L, 5.7L, and 6.0L engines. Walker Products Knock Sensors are OE Replacement components that detect engine detonation to help the ECU adjust timing and prevent internal engine damage.
Features:
- Built for Harsh Environments:Â Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
- Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
- OE Replacement Sensitivity:Â Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
- Detects Engine Knock:Â Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
- Restores Ignition Timing Accuracy:Â Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
Specifications:
| Number of Terminals | 1 |
| Connector Type | Bullet |
| Connector Shape | Circle |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 1998-2007 Buick, Cadillac, Chevrolet, GMC, and Hummer models including Rainier, CTS, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Camaro, Corvette and more — 5.3L, 5.7L, and 6.0L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: Forecast KS36, Duralast SU1282DG, NTK ID0116, Delphi AS10017, General Motors 10456603, General Motors 12589867, Advan-Tech 7Q3, KEM 144-431 and 12 more
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
