Restore Peak Performance to Your GM Diesel Truck
Is your 2006-2007 Sierra, Silverado, or Express/Savana van experiencing frustrating engine problems? Issues like a no-start condition, erratic idling, stalling, or a persistent Check Engine Light can often be traced back to a failing Engine Control Module (ECM). This critical component is the brain of your Duramax diesel engine, controlling everything from fuel injection timing and turbo boost to transmission shifting and emissions systems. When it fails, your truck’s reliability and performance suffer dramatically.
This is a direct replacement, VIN-programmed ECM that solves these common issues. We take the guesswork out of the repair by flashing the module with the latest, most stable software updates directly from GM, tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures seamless integration and optimal performance, getting your workhorse back on the road where it belongs.
From the Diagnostic Bay
We had a 2006 Silverado 2500 HD with the LLY Duramax towed in. The owner had spent a fortune replacing injectors, the fuel pressure regulator, and even the FICM, but the truck still had a dead miss on cylinder 3 and would barely run. Diagnostic scanners showed a U0107 (Lost Communication with Throttle Actuator Control Module) and a P0203 (Injector Circuit/Open – Cylinder 3). After confirming the wiring harness was intact, we suspected the ECM. The injector driver for cylinder 3 inside the original module had failed. We installed one of our VIN-programmed ECMs, performed the security relearn, and the truck fired up instantly, running as smoothly as the day it left the factory. It’s a classic case where chasing parts costs more than correctly diagnosing a faulty engine computer.
Is Your Truck Showing Signs of a Bad ECM?
A failing engine computer can manifest in numerous ways, often mimicking other component failures. Before you start replacing expensive sensors or fuel system parts, check if your vehicle is exhibiting any of these classic symptoms of a faulty 2006-2007 Sierra 3500 ECM:
- ✔ Check Engine Light: The light is on with communication-related trouble codes (U-codes) or specific sensor circuit codes that don’t resolve after replacing the sensor.
- ✔ No-Start or Hard-Start: The engine cranks but refuses to start, or takes an excessively long time to fire up, especially when cold or hot.
- ✔ Poor Engine Performance: You may experience a noticeable loss of power, poor acceleration, hesitation, or sputtering under load.
- ✔ Rough or Unstable Idle: The engine idles erratically, surging up and down or stalling unexpectedly at a stop.
- ✔ Reduced Fuel Economy: A sudden and unexplained drop in MPG can be a sign the ECM is not managing the fuel delivery correctly.
- ✔ Transmission Issues: The ECM works with the TCM (Transmission Control Module), so a failing ECM can cause harsh shifting, delayed engagement, or incorrect gear selection.
- ✔ Intermittent Problems: Issues that come and go with changes in temperature or vibration often point to failing internal connections within the ECM.
The Solution: A VIN-Programmed Replacement Module
Don’t settle for a generic, unprogrammed module that will require expensive dealer tools and labor to configure. Our process is designed for the professional technician and the skilled DIYer. When you order, simply provide us with your vehicle’s VIN. Our technicians will use that information to load the correct GM-certified software and calibrations onto the module. This ensures that all systems, from the anti-theft system (VATS) to the specific emissions equipment on your truck, function exactly as intended. This is the most reliable and efficient way to replace a faulty 2006-2007 Sierra 3500 ECM.
Guaranteed Fitment for Your Vehicle
This ECM is a direct replacement for a wide range of GM diesel trucks and vans from 2006 and 2007. It is compatible with multiple original equipment part numbers, ensuring a perfect match. Please verify your vehicle is on the list below.
This module replaces the following part numbers: 19260753, 12588335, 12606126, 12606127, 12603623, 12604137, YNAY
Compatible Models:
- 2006-2007 Chevrolet Silverado 2500/3500 HD Pickup (with diesel engine)
- 2006-2007 GMC Sierra 2500/3500 HD Pickup (with diesel engine)
- 2006-2007 Chevrolet Express 2500/3500 Van (with diesel engine)
- 2006-2007 GMC Savana 2500/3500 Van (with diesel engine)
Note: For 2007 models, this fits the ‘Classic’ body style (with a creased door skin).
Installation is straightforward. The ECM is typically located in the engine bay, on the driver’s side, under or near the battery. After disconnecting the battery, you can unbolt the old module, disconnect the wiring harnesses, and install the new one. Once installed, you will need to perform a simple security relearn procedure (also known as a VATS relearn), which can be done without any special tools and typically takes about 30 minutes. Instructions for this procedure are widely available online or in service manuals.
Frequently Asked Questions
Do I need to do anything after installing this ECM?
Yes. While we program the module to your VIN, you will need to perform a security relearn procedure (VATS relearn) once it’s installed. This syncs the new ECM with your vehicle’s anti-theft system. It’s a simple procedure that involves turning the key on and off in a specific sequence and does not require any special scan tools.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a plug-and-play part?
It is as close as you can get. Because it arrives programmed to your VIN, it eliminates the need for expensive dealer-level programming tools. The only step required after physical installation is the security relearn procedure mentioned above.
Will this fix my specific problem?
This ECM will fix problems directly caused by a faulty engine computer. While we cannot diagnose your vehicle remotely, the symptoms listed on this page are strong indicators of ECM failure. We always recommend proper diagnostics to confirm the ECM is the root cause before ordering.
What is the warranty on this part?
This part comes with a standard warranty covering defects in materials and workmanship. Please refer to our website’s warranty policy page for complete details and duration.