HomeEmission Control > SensorsGlobal Parts 1811798 Ignition Knock (Detonation) Sensor
Part #: 1811798

Global Parts 1811798 Ignition Knock (Detonation) Sensor

⚙️ 5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, and Oldsmobile, Trailblazer, Trailblazer EXT, Envoy, Envoy XL, and Bravada
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Reliable Ignition Knock Sensor for Chevrolet, GMC, and Oldsmobile

The Global Parts 1811798 Ignition Knock (Detonation) Sensor is designed to accurately detect engine knocking in select Chevrolet, GMC, and Oldsmobile models. This sensor helps maintain optimal engine performance by providing precise feedback to the engine control unit.

  • Length: 1.65 inches for compact and secure installation
  • Blade terminal type with 2 terminals for reliable electrical connection
  • Includes mounting hardware for straightforward replacement
  • Single female oblong connector for easy plug-in compatibility
  • Compatible with Chevrolet Bravada, GMC Envoy, Envoy XL, Trailblazer, and Trailblazer EXT

Product Details and Specifications

The Global Parts 1811798 ignition knock sensor features a 1.65-inch length, making it suitable for tight engine compartments. It uses a blade terminal type with two terminals, ensuring a stable and secure electrical connection. The sensor includes mounting hardware, simplifying installation and reducing the need for additional parts. Its single female oblong connector is designed to match factory wiring harnesses on compatible vehicles, providing a direct fit without modification.

Compatible Vehicles and Applications

This ignition knock sensor is compatible with specific models from Chevrolet, GMC, and Oldsmobile, including the Chevrolet Bravada, GMC Envoy and Envoy XL, as well as the Trailblazer and Trailblazer EXT. Using the correct sensor ensures accurate knock detection and helps maintain engine efficiency and longevity.

  • Detects engine knocking and detonation for improved combustion control
  • Helps prevent engine damage caused by pre-ignition or knock
  • Supports optimal fuel efficiency and engine performance
  • Reduces emissions by enabling precise ignition timing adjustments

Installation Notes and Tips

When installing the Global Parts 1811798 ignition knock sensor, ensure the mounting surface is clean and free of debris for proper sensor function. Use the included mounting hardware to secure the sensor firmly in place. Verify the connector is fully seated and locked to prevent electrical issues. It is recommended to disconnect the battery before installation to avoid electrical shorts.

Quality Assurance and Warranty

Global Parts manufactures this ignition knock sensor to meet or exceed OEM specifications. The part number 1811798 undergoes quality checks to ensure durability and reliable performance. Installation of this sensor supports maintaining factory-level engine control system accuracy. Warranty details are available through the manufacturer and typically cover defects in materials and workmanship.

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002ChevroletTrailblazer4.2LL6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2002ChevroletTrailblazer EXT4.2LL6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2002GMCEnvoy4.2LL6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2002GMCEnvoy XL4.2LL6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2002OldsmobileBravada4.2LL6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.