ACDelco 20890542 Driver Side Active Suspension Body Front Vertical Accelerometer

The ACDelco 20890542 is a Genuine OEM Driver Side Active Suspension Body Front Vertical Accelerometer designed as a factory-direct replacement for GM vehicles equipped with active suspension systems. This sensor plays a critical role in your vehicle's electronic stability and ride control by continuously monitoring vertical body acceleration at the front driver-side position.

These acceleration sensors measure the vibration and acceleration of motion of your vehicle. Readings are calculated from varied force placed upon a spring within the sensor, and that data is transmitted directly to the vehicle's Electronic Control Unit (ECU). The electronic stability control system relies on this sensor to detect excessive lean or body movement and signal the braking and suspension systems to make real-time corrective adjustments, keeping the vehicle stable and composed under dynamic driving conditions.

Key Features:

• Genuine ACDelco OEM replacement part — exact fit and function as original equipment
• Monitors vertical body acceleration at the front driver-side location
• Communicates with the ECU to support active suspension and electronic stability control
• Engineered and tested to rigorous GM quality and federal safety standards
• Backed by GM's Replacement Parts Limited Warranty
• Sold individually

Over time, exposure to heat and moisture can cause the original sensor to degrade or fail, resulting in stability control warnings or compromised ride performance. The ACDelco 20890542 restores proper suspension system communication and ensures your active suspension operates as designed. Also referenced as: Accelerometer A (SLP-1).