Restore Peak Performance to Your GM Diesel Truck or Van
Is your 2006-2007 Silverado, Sierra, Express, or Savana van suffering from perplexing engine issues? A faulty Engine Control Module (ECM) is often the culprit behind problems that can sideline your workhorse vehicle. This direct-fit ECM, part number 12588335, is the definitive solution to restore the power, reliability, and efficiency you depend on. As the central computer for your 6.6L LLY Duramax engine, the ECM governs everything from fuel injection and ignition timing to emissions controls and transmission communication. When it fails, the symptoms can be widespread and frustrating.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. Upon purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then program the module with the latest official GM software updates specific to your truck or van. This critical step ensures seamless integration and communication with all other vehicle systems, eliminating the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay
We recently had a 2006 Silverado 2500 towed in that was a classic case of ‘chasing ghosts.’ The owner had replaced the fuel filter, the fuel pressure regulator, and two injectors trying to solve an intermittent stalling and hard-start issue. No specific injector codes were present, just a general communication fault code (U0100) that would come and go. After confirming power and ground to the ECM were solid, we connected our diagnostic tool and noticed the data stream would occasionally freeze just before the engine stalled. This pointed directly to an internal ECM failure. We installed one of our VIN-programmed modules, and the truck fired up instantly and ran perfectly. The customer had spent over a thousand dollars on parts he didn’t need before correctly identifying the vehicle’s computer as the root cause.
Common Symptoms of a Failing GM Diesel ECM
If you’re experiencing any of the following issues, a failing engine computer could be the reason. Replacing your module can resolve these problems and get you back on the road with confidence.
- ✔ Check Engine Light is illuminated with various fault codes
- ✔ Engine cranks but will not start
- ✔ Intermittent stalling or shutting off while driving
- ✔ Noticeable decrease in fuel economy
- ✔ Poor engine performance, hesitation, or rough idling
- ✔ Communication issues with diagnostic scan tools
- ✔ Incorrect transmission shifting patterns
Your Solution: A Programmed 2006-2007 Express 3500 ECM
Choosing the right replacement part is crucial for a lasting repair. Our modules are meticulously inspected to ensure they meet stringent quality standards. The key benefit is our VIN-programming service. By flashing the module with your vehicle’s unique data and the newest GM calibrations, we ensure it works precisely as intended from the moment you install it. This is a true plug-and-play component designed to make your repair as simple and effective as possible. This module is a direct replacement for a wide range of original part numbers, ensuring broad compatibility.
This computer is a direct fit for the following part numbers: 19260753, 12588335, 12606126, 12606127, 19260753, 12603623, 12604137, YNAY
Guaranteed Fitment
This Electronic Control Module is guaranteed to fit the following vehicles equipped with the 6.6L LLY Duramax Diesel Engine (8th digit of VIN is ‘2’):
- 2006-2007 Chevrolet Silverado 2500/3500 Pickup
- 2006-2007 GMC Sierra 2500/3500 Pickup
- 2006-2007 Chevrolet Express 2500/3500 Van
- 2006-2007 GMC Savana 2500/3500 Van
Frequently Asked Questions
Is this ECM ready to install when I receive it?
Yes! This ECM comes fully programmed to your vehicle’s specific VIN. Once you receive it, you can install it directly into your vehicle without any need for additional programming from a dealer.
What information do you need from me?
After you complete your purchase, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to load the correct software and calibration files for your exact model and options.
Will this fix my check engine light?
This module will resolve the check engine light if the light is caused by a faulty ECM. If the codes are related to other failing sensors or components, those parts will still need to be addressed. This module fixes the ‘brain,’ not the ‘sensors’.
Do I need to perform a security relearn procedure?
In most cases for this specific GM platform, a security relearn is not required as the programming handles the integration. However, easy-to-follow instructions are available should the vehicle’s anti-theft system require it, a process that typically takes about 10-15 minutes and requires only the vehicle key.
How do I find the part number on my old ECM?
Your original part number is printed on a large sticker on the case of the module. On trucks, it’s located under the battery on the driver’s side. On vans, it’s typically in the left rear of the engine compartment. Matching one of the listed part numbers confirms compatibility.