2014 GMC Sierra 6.6L TCM Transmission Control Module Programmed Plug&Play

Description

2014 GMC Sierra 6.6L TCM Transmission Control Module – Programmed Plug & Play

This Transmission Control Module (TCM / TCU) is a genuine OEM replacement for all 2014 GMC Sierra 6.6L models. Each unit is pre-programmed to your vehicle’s VIN and updated to the latest manufacturer calibration for a true plug-and-play installation with no dealer visit required.

Built to OEM standards for reliability, shift quality, and long-term performance.

Strict Testing & Quality Assurance

Each TCM is fully refurbished, bench-tested, and inspected by our certified in-house technicians.
We use professional off-board testing equipment to verify:

Proper CAN-bus communication

Shift-solenoid activation

Input/Output sensor signal validation

Temperature and load simulation

Live-data performance under simulated driving conditions

No module leaves our facility without passing a full quality control inspection. This ensures you receive a unit that performs better than new at an unbeatable value.

Common Symptoms of a Faulty TCM

Hard shifting / delayed shifting

Gear slipping

Stuck in Limp Mode

Transmission overheating

Erratic gear changes

Poor fuel economy

Trouble codes related to shift solenoids or communication

Important Note

This TCM is fully programmed and updated and does not require additional programming after installation.
Simply install the unit and the vehicle will recognize it automatically.

If your original TCM has unique calibration or custom parameters, we also offer a TCM Cloning Service, which transfers all data-including VIN, shift adaptations, and configuration settings-into the replacement unit.

Contact Us

Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566