Dorman 609-202 Transmission Control Module

Transmission Control Module Overview

This Dorman transmission control module is fully tested and validated to match the function and performance of the original TCM on specified applications. It is a standard replacement for vehicles that need a programmed control module with the correct connector layout and terminal configuration.

Fits 2001-2005 Chevrolet Silverado 2500 HD, N/A. Fits 2001-2005 Chevrolet Silverado 3500, N/A. Fits 2001-2005 GMC Sierra 2500 HD, N/A. Fits 2001-2005 GMC Sierra 3500, N/A. Fits 2001-2003 Chevrolet Silverado 2500, N/A, Allison Transmission. Fits 2001-2003 GMC Sierra 2500, N/A, Allison Transmission.

Key Features

• Standard replacement transmission control module for specified applications
• Fully tested and validated to match original module function and performance
• Requires programming after installation
• Two rectangular female connectors with blade-pin terminals
• 35-terminal configuration for the listed applications
• Remanufactured module with no mounting hardware or wiring harness included

Detailed Description

Dorman 609-202 is a remanufactured transmission control module built for direct service on the listed Chevrolet Silverado and GMC Sierra applications. The module is engineered around the original connector and terminal arrangement, including two connectors, a rectangular housing, and a 35-terminal blade-pin design. Because programming is required, the replacement must be configured to the vehicle after installation to restore proper transmission control. Part number 609-202 also cross-references 15071240 for the same application.

Common Issues This Part May Solve

• Transmission shifting concerns caused by a failed control module
• Communication faults related to the original TCM
• Loss of proper transmission management after module failure
• Electrical connector mismatch when replacing the original unit

Installation Notes and Tips

Verify the connector count, terminal style, and module dimensions before installation. This unit requires programming, so plan for vehicle-specific setup after the module is installed. Confirm the application against the listed Chevrolet Silverado and GMC Sierra fitments, including Allison Transmission notes where shown.

Quality Assurance

This Dorman transmission control module is fully tested and validated to match original equipment function and performance on the specified applications. It is supplied as a standard replacement remanufactured module.