Dorman 609-003 Transmission Control Module

Reliable Transmission Control Module for Select GM Vehicles

The Dorman 609-003 Transmission Control Module is a remanufactured electro-hydraulic control unit designed for precise transmission management. Engineered to meet standard replacement specifications, this module supports a range of Cadillac, Chevrolet, GMC, Hummer, and Pontiac models.

• Standard replacement grade for dependable performance
• 16-pin connector/terminal configuration for secure electrical connections
• Compact dimensions: 12 inches length, 6 inches width, and 5 inches height
• Includes one remanufactured transmission electro-hydraulic control module

Product Details and Specifications

The Dorman 609-003 Transmission Control Module features a 16-pin connector configuration, ensuring compatibility with the vehicle’s wiring harness. Measuring 12 inches in length, 6 inches in width, and 5 inches in height, this module fits securely within the transmission control system. As a remanufactured unit, it undergoes rigorous testing to restore functionality and reliability, making it a practical replacement for original equipment in vehicles such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Pontiac G8.

Compatible Vehicles and Applications

This transmission control module is compatible with a variety of General Motors vehicles, including:

• Cadillac Escalade, Escalade ESV, Escalade EXT, CTS, STS, SRX, XLR
• Chevrolet Avalanche, Camaro, Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, Suburban 1500, Suburban 2500, Tahoe
• GMC Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H2
• Pontiac G8

Common Issues Addressed by This Module

• Erratic or delayed shifting in automatic transmissions
• Transmission slipping or failure to engage gears properly
• Check engine or transmission warning lights related to control module faults
• Loss of communication between transmission and vehicle control systems
• Intermittent transmission performance problems

Installation Notes and Tips

Installation of the Dorman 609-003 Transmission Control Module should be performed by a qualified technician. Ensure the vehicle’s battery is disconnected before removal to prevent electrical damage. Verify the 16-pin connector aligns correctly with the vehicle’s wiring harness. After installation, a diagnostic scan may be necessary to reset transmission control parameters and clear any fault codes.

Quality Assurance and Warranty

This remanufactured transmission control module is tested to meet standard replacement criteria, ensuring reliable operation. Dorman provides a limited warranty on this part, covering defects in materials and workmanship. Refer to the warranty documentation for specific terms and conditions.