OEM Used Allison 3000HS Transmission Control Module (TCM).

This genuine OEM Allison Transmission Control Module (TCM) was removed from a Chevrolet Isuzu medium-duty truck equipped with an Allison 3000HS automatic transmission.

The TCM manages transmission operation, gear selection, shift timing, torque converter control, and communication with the engine control module (ECM) for smooth transmission performance.

The module is in used condition and shows noticeable cosmetic corrosion and oxidation on the exterior aluminum housing, as shown in the photos. The corrosion is cosmetic and does not necessarily indicate internal damage. Please review all pictures carefully before purchasing.

Verify your OEM part number and transmission model before ordering.

Part Numbers

• Transmission: Allison 3000HS

• Component: Transmission Control Module (TCM)

• Manufacturer: Allison Transmission

Compatible With

May fit medium-duty trucks equipped with Allison 3000HS transmissions, including:

• Chevrolet Kodiak C6500

• Chevrolet Kodiak C7500

• GMC TopKick

• Isuzu FTR

• Isuzu FVR

• Isuzu FXR

Approximate years:

2003–2010

Always match your OEM part number before purchasing.

Features

• Genuine Allison OEM Part

• Transmission Control Module (TCM)

• Controls transmission shifting

• OEM direct replacement

• Heavy-duty commercial truck application

• Factory aluminum housing

Condition

• OEM Used

• Heavy cosmetic oxidation/corrosion on the exterior housing

• Housing remains complete

• Mounting points appear intact

• Connectors are undamaged

• No visible cracks in the case

• Sold exactly as pictured

Notes

• Exterior corrosion is present and clearly shown in the photos.

• Programming or calibration may be required after installation.

• Professional installation is recommended.

• Verify compatibility using your transmission model and OEM part number.