Get Your Duramax Back on the Road & Running Strong
When your Silverado, Sierra, or Express van is down, every minute counts. A faulty Engine Control Module (ECM) can bring your work to a grinding halt, causing frustrating issues like a no-start condition, poor fuel economy, erratic shifting, or a dashboard full of warning lights. This isn’t just an inconvenience—it’s a threat to your bottom line. This replacement 12653319 ECM is the reliable, straightforward solution to restore your truck’s brain and get you back to work without delay.
Common Symptoms & Your Solution
If your 6.6L Duramax is experiencing any of the following, a failing ECM is a likely culprit. This module is the definitive fix for:
- Complete no-start or intermittent starting problems
- Check Engine Light (CEL) with communication-related Diagnostic Trouble Codes (DTCs) like U0100
- Internal processor failure codes, such as P0606
- Unexplained loss of power or poor engine performance
- Communication issues with diagnostic scan tools
- Problems with the fuel injection or transmission control systems
We take the guesswork out of the repair. Simply provide your vehicle’s VIN during checkout, and we will program this 12653319 ECM with the latest GM-certified software for your specific truck or van. It arrives ready for installation, programmed to get your vehicle’s systems communicating correctly once again.
Features & Tangible Benefits
- ✔ VIN-Specific Programming: Arrives flashed with the correct software for your vehicle, ensuring all factory systems operate as intended.
- ✔ Minimize Downtime: This is a direct-fit solution designed to get your heavy-duty truck or van back in service quickly and efficiently.
- ✔ Cost-Effective Repair: A dependable, tested used module offers a smart alternative to the high cost of a new dealership part.
- ✔ Restored Performance: Corrects engine management issues to bring back the power, reliability, and efficiency you depend on.
- ✔ This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Post-Installation Steps
As a veteran tech, I can’t stress this enough: on these 2013-2014 GM platforms, simply swapping the ECM isn’t the final step. The most critical procedure is the Vehicle Theft Deterrent (VTD) relearn. Your truck’s immobilizer system is designed to prevent theft by ensuring the ECM, ignition, and other modules recognize each other. When you install a new ECM, this security link is broken. You, or your mechanic, will need a professional tool with access to GM’s TIS2Web service to perform this relearn. Skipping this step will result in a no-start condition. Taking the time to properly complete the VTD and any other necessary relearns (like for crankshaft position) is the key to a successful, one-time repair.
Frequently Asked Questions
Do I need to send my old ECM to you?
No, a core return is not required. We program this replacement 12653319 ECM using the VIN you provide at checkout, so you can keep your old part.
What information do you need from me?
We only need your vehicle’s 17-digit Vehicle Identification Number (VIN). Please provide it in the notes section during checkout or send it to us in a message after your purchase to avoid shipping delays.
What is a ‘theft relearn’ and is it difficult?
A theft relearn (VTD relearn) is a security procedure that syncs the new ECM to your vehicle’s anti-theft system. On these specific models, it cannot be done with a simple key cycle. It requires a professional-grade scan tool with access to GM’s online programming system. Most professional repair shops can perform this service for you.
Is this a new part?
No, this is a fully functional, tested computer that was sourced from a salvaged vehicle. It offers excellent performance and reliability at a fraction of the cost of a new unit from a dealer.
Will this ECM fit other service numbers?
Yes, this computer is a direct replacement for service numbers 12654088 and 12653319. As long as your vehicle is listed in the compatibility chart, this module will function correctly once programmed and installed.