Chevrolet Silverado & GMC Sierra 6.6L Duramax TCM 15117030

Remanufactured Transmission Control Module

This listing is for a professionally remanufactured Transmission Control Module (TCM) for select Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks equipped with a 6.6L Duramax diesel engine.

Each module is inspected, remanufactured, and tested before shipping to ensure proper operation.

Vehicle Fitment

• Chevrolet Silverado 2500HD

• Chevrolet Silverado 3500HD

• GMC Sierra 2500HD

• GMC Sierra 3500HD

• 6.6L Duramax diesel engine

• Select LLY, LBZ, and LMM applications

• Automatic transmission

Compatible Part Number

• 15117030

Your original module’s part number must match 15117030. Compatibility cannot be confirmed using only the vehicle’s year, make, model, or engine size.

Contact us before ordering if your original part number is missing or does not match.

Plug-and-Play Installation

This module is supplied ready for installation. No additional programming is normally required when replacing a compatible module with the same part number.

Vehicle-specific diagnostic, setup, or relearning procedures may still be required after installation. Professional installation is recommended.

Core Exchange Required

This product requires the return of your original TCM.

After receiving and installing the replacement module, return the original module according to the supplied core-return instructions. The returned core must:

• Match part number 15117030

• Be complete with no missing components

• Retain its original identification label

• Have no severe fire, water, impact, or physical damage

• Remain in rebuildable condition

Contact us before ordering if the original module has been opened, altered, previously repaired, or physically damaged.

What You Will Receive

• One remanufactured Transmission Control Module

• Part number 15117030

• Module testing before shipment

• Installation-ready replacement

• Core-return instructions

Important Diagnostic Information

The customer or installing technician is responsible for confirming that the TCM is the source of the vehicle’s problem.

Before installing the replacement module, inspect:

• Transmission wiring and connectors

• Power and ground circuits

• Battery and charging-system voltage

• Transmission solenoids

• Communication circuits

• Related transmission components

Installing a replacement module without correcting an existing electrical or transmission problem may damage the replacement TCM.

Verify Before Ordering

Please confirm all of the following:

• Your original part number is 15117030

• Your vehicle is equipped with the correct transmission

• Your original core is complete and rebuildable

• The electrical and transmission systems have been properly diagnosed

Contact us before purchasing if you need assistance confirming compatibility.