Get Your Duramax Back on the Job, Fast.
A truck that won’t start or runs poorly isn’t just an inconvenience—it’s a hit to your productivity and your bottom line. When the Engine Control Module (ECM) in your 2006-2007 GM heavy-duty truck or van fails, you need a solution that’s reliable, straightforward, and gets you back to work without delay. This is the definitive answer. We provide a professionally programmed 12606126 ECM, flashed with the latest GM software updates specifically for your vehicle’s VIN. This isn’t just a part; it’s a complete, ready-to-install solution designed to restore the dependable performance your workhorse is known for.
Common Symptoms & Your Solution
If your truck is experiencing any of the following issues, a failing ECM is the likely culprit. This module is the solution for:
- Complete no-start or intermittent starting problems
- Poor fuel economy or reduced engine power
- Erratic transmission shifting or behavior
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0606, or U0100
- Stalling or rough idling for no apparent reason
Features & Real-World Benefits
- ✔ VIN-Programmed for Your Truck: We flash the module with your vehicle’s specific VIN before shipping. This eliminates the need for expensive dealership programming, saving you time and money.
- ✔ Plug-and-Play Installation: Once you receive it, the installation is straightforward. In most cases, after a simple security relearn procedure, you’ll be ready to turn the key and go.
- ✔ Loaded with Latest GM Updates: Your ECM comes with the most current factory software, ensuring optimal engine performance, fuel efficiency, and emissions control as intended by the manufacturer.
- ✔ Direct-Fit Replacement: This unit is a direct replacement for multiple part numbers, including 19260753, 12588335, 12606127, and more, guaranteeing a perfect fit in your 2006-2007 Sierra, Silverado, Express, or Savana.
- ✔ Tested for Reliability: Every module is meticulously inspected to ensure it functions correctly, giving you confidence that you’re installing a solid, dependable part. This is the reliable fix you need for your work truck.
- ✔ This unit is backed by our one-year replacement warranty.
From a Veteran Tech: Get it Done Right the First Time
“I’ve seen it a hundred times. A contractor’s Silverado 2500 is dead in a customer’s driveway. He’s losing a day’s pay and his reputation is on the line. The issue? A fried ECM. Instead of towing it to a dealer and waiting days, he ordered a pre-flashed unit. He had the new module in hand the next day, installed it in under an hour, and was back on the job. That’s the difference between a minor hiccup and a major financial headache. This programmed 12606126 ECM is that exact solution—it minimizes downtime so you can keep your promises and your profits.”
Frequently Asked Questions
What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). We use this to load the correct, updated software for your truck’s specific configuration.
Will I need to do any additional programming?
No dealership programming is required. The module is delivered ready for installation. You will, however, need to perform a simple security relearn procedure, which can typically be done without special tools and takes about 30 minutes. Instructions are widely available online for your specific model.
How can I confirm this fits my truck?
This ECM fits 2006-2007 Silverado, Sierra, Express, and Savana 2500/3500 models with the 6.6L LLY Duramax diesel engine. Please check the detailed fitment list on this page and match your original part number to one of the compatible numbers listed, such as 12606126, 19260753, or 12588335.
What if my original part number isn’t listed?
The provided list of compatible part numbers is extensive. If your number is not on the list, please contact us with your VIN before ordering. We can verify compatibility to ensure you receive the correct part for your vehicle.
Is this a simple DIY job?
For someone with basic mechanical skills, this is a very manageable job. The ECM is typically located under the battery on the driver’s side in the pickups. The most important steps are disconnecting the battery first and carefully handling the electrical connectors. The final security relearn is the last step before you’re back on the road.