GM GENUINE PARTS Knock Sensor 213-96 (10456126) — OE Fit for 1994–1995 GM Models, Female Connector

GM Genuine Parts 213-96 (10456126) is an original-equipment knock (detonation) sensor that monitors engine vibration and delivers the signal your ECM needs to adjust ignition timing. This genuine GM replacement sensor is built to the same specifications as the factory part and is recommended for restoring proper engine control response when a knock sensor fails. It converts mechanical vibrations from abnormal combustion into an electrical voltage the engine control module uses to fine-tune ignition and air/fuel management. Installing a correctly matched OE sensor helps maintain engine performance, drivability, and the vehicle’s designed responsiveness.

How does this knock sensor interact with my vehicle’s engine management?

The sensor senses low-frequency vibration caused by pre-ignition or detonation and sends a voltage signal to the engine control module (ECM). The ECM interprets that signal and adjusts ignition timing or other parameters to reduce engine knock and protect components from harsh combustion events.

• Generates a vibration-based voltage signal the ECM reads.
• Works with the vehicle’s ignition and fuel control strategies to reduce detonation.
• Connector gender: female for direct mating with factory harnesses.
• Manufactured to GM OE fit, form, and function for consistent communication with the ECM.

Will this fit my GM vehicle and replace the original sensor?

This GM Genuine Parts sensor is produced to match OE specifications for fitment and performance on listed GM models. It’s the recommended replacement for the original knock sensor on many Buick, Cadillac, Chevrolet, and Pontiac vehicles from the early-to-mid 1990s.

• Designed for direct replacement — no modification required.
• Applicable models include Buick Roadmaster (1994–1995) and select Commercial Chassis iterations.
• Fits Cadillac Fleetwood and select 1994–1995 chassis applications.
• Fits Chevrolet Camaro, Caprice, Corvette, Impala and Pontiac Firebird model years noted in fitment list.

What are the construction and quality characteristics of this OE sensor?

Built to GM’s quality and durability expectations, the sensor uses components and assembly methods consistent with the original factory unit. That ensures reliable electrical output, connector compatibility, and service life comparable to the part your vehicle shipped with.

• Manufactured to GM OE specifications for consistent performance.
• Female electrical connector for proper mating with factory wiring harnesses.
• Durable materials and assembly for repeatable signal fidelity under engine conditions.
• Tested for the vibration and temperature ranges typical of its intended applications.

What should I expect during installation and vehicle operation afterward?

Installation typically involves removing the old sensor, mounting the GM Genuine Parts sensor in the original location, and reconnecting the harness. After replacement, the ECM will once again receive accurate knock data, allowing it to optimize ignition timing as designed.

• Simple swap with original mounting and wiring — follow factory torque and routing specs.
• May clear knock-related diagnostic codes once the ECM verifies normal signal behavior.
• Helps restore the intended ignition control strategy and drivability when functioning correctly.
• If persistent codes appear, further diagnosis of wiring or ECM inputs is recommended.

Who is this for This GM Genuine Parts 213-96 (10456126) knock sensor is for technicians, DIY enthusiasts, and owners of compatible Buick, Cadillac, Chevrolet, and Pontiac vehicles who need an exact OE replacement. Choose this sensor when you want factory-fit performance, connector compatibility, and the peace of mind that comes from using a part manufactured to GM specifications.

FAQ

Q: Does this sensor fit my 1994 Buick Roadmaster?

A: Yes, the GM Genuine Parts 213-96 is a listed recommended replacement for the 1994–1995 Buick Roadmaster.

Q: Will installing this sensor clear a knock-related trouble code?

A: Replacing a faulty sensor can clear related codes once the ECM sees a valid signal, but additional diagnostics may be needed if codes persist.