Dorman 917-637 Automatic Transmission Speed Sensor - Input

Reliable Automatic Transmission Speed Sensor for Chevrolet and GMC

The Dorman 917-637 Automatic Transmission Speed Sensor is designed to provide accurate vehicle speed data for select Chevrolet and GMC trucks. Engineered with a durable plastic housing and blade terminal type, this sensor ensures consistent performance without the need for a wiring harness.

• Compatible with Chevrolet Avalanche 2500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and GMC Sierra 2500 HD, Sierra 3500, Yukon XL 2500 models
• Durable plastic housing for corrosion resistance and long service life
• Blade terminal type for secure electrical connection
• Does not include wiring harness, allowing for direct replacement
• Includes vehicle speed sensor in package contents

Durable Design and Precise Fitment

The Dorman 917-637 sensor is manufactured to meet OEM specifications for automatic transmission speed sensing. Its plastic housing offers resistance to environmental factors such as moisture and heat, which are common in transmission areas. The blade terminal type ensures a reliable electrical connection, minimizing the risk of signal loss or intermittent faults. This sensor is compatible with a range of Chevrolet and GMC heavy-duty trucks, including the Avalanche 2500, Silverado 2500 HD Classic, Sierra 3500 Classic, and Yukon XL 2500, making it a suitable replacement part for maintaining accurate speed readings.

Common Applications and Problem Resolution

• Restores accurate vehicle speed readings for transmission control modules
• Resolves erratic speedometer behavior or failure
• Eliminates transmission shifting issues caused by faulty speed sensor data
• Prevents transmission limp mode triggered by sensor faults
• Addresses diagnostic trouble codes related to speed sensor malfunction

Installation Notes and Tips

Installation of the Dorman 917-637 sensor requires no wiring harness, simplifying the replacement process. Ensure the vehicle is safely lifted and supported before accessing the transmission sensor location. Disconnect the battery prior to sensor removal to avoid electrical shorts. Carefully remove the old sensor and clean the mounting area before installing the new sensor to ensure proper seating and signal accuracy. Verify all electrical connections are secure before reassembling and testing the vehicle.

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM standards, providing reliable performance for your Chevrolet and GMC trucks. The 917-637 Automatic Transmission Speed Sensor undergoes rigorous quality control to ensure durability and functionality. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use conditions.