ACDelco 25188099 GM Original Equipment Automatic Transmission Output Shaft Speed Sensor

The ACDelco 25188099 is a GM Original Equipment automatic transmission output shaft speed sensor designed to monitor and report output shaft speed to your vehicle's transmission control module. This critical sensor provides real-time data that the TCM uses to regulate line pressure, optimize transmission shift timing, calculate vehicle speed, and determine the current gear ratio.

Key Features:

• Direct replacement for factory original equipment on compatible GM vehicles
• Reports output shaft speed data to transmission control module
• Enables proper line pressure regulation and shift timing
• Provides vehicle speed calculation and gear ratio determination
• Manufactured to OE specifications for precise fit and function
• Built to deliver the same performance and durability as your original sensor

When your transmission output shaft speed sensor fails, you may experience erratic shifting, transmission slipping, speedometer malfunction, or illuminated check engine lights. This genuine ACDelco sensor restores proper transmission control module communication and ensures your GM vehicle's transmission operates as designed.