2006-2007 Duramax LLY ECM Engine Computer 12606126 Programmed

Restore Your Duramax’s Performance!

Get your 2006-2007 GM truck or van running right with this pre-programmed Engine Control Module (ECM). Flashed to your VIN with the newest GM software, it’s a direct-fit solution for stalling and no-start issues. Order today for a simple, reliable repair!

$1295.95

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Is Your Duramax Diesel Running Rough?

If your 2006-2007 Silverado, Sierra, Savana, or Express van with the LLY Duramax diesel engine is experiencing perplexing issues like stalling, no-start conditions, or an illuminated Check Engine Light, the root cause is often a failing Engine Control Module (ECM). The ECM is the electronic brain of your truck’s engine, managing everything from fuel injection timing and turbo boost to emissions controls and transmission shifting. When it falters, the symptoms can be widespread and frustrating, often leading to incorrect diagnoses and costly, unnecessary repairs.

This is a direct-fit replacement ECM, part number 12606126, for your GM diesel vehicle. We take the guesswork out of the repair by pre-programming the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This crucial step ensures that the computer has the correct software and calibrations for your truck’s specific options and emissions equipment, loaded with the latest updates available from GM. This process makes installation as straightforward as possible, getting your reliable workhorse back on the road quickly.

From the Diagnostic Bay

We had a 2006 Silverado 2500 towed in with a classic intermittent no-start complaint. The owner had already replaced the fuel filter, checked the FICM (Fuel Injection Control Module) voltages, and was about to order a high-pressure fuel pump. The truck would crank but not fire, and then, an hour later, it would start up as if nothing was wrong. There were no fuel pressure codes, just a generic network communication error. After checking all the wiring and grounds, we connected our diagnostic tool and monitored the ECM’s live data during a crank-no-start event. We saw the ECM was failing to command the injectors to fire, despite receiving all the correct signals from the crank and cam sensors. A quick swap with a known-good, programmed ECM confirmed our suspicion. The original module had an internal fault that would only appear when it reached a certain temperature. This replacement Duramax LLY ECM solved the problem permanently, saving the customer from spending over a thousand dollars on a fuel system he didn’t need.

Signs of a Failing Duramax LLY ECM

A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your ECM may need replacement:

  • ✔ Intermittent or complete no-start condition where the engine cranks but won’t fire.
  • ✔ Check Engine Light (CEL) is on with communication-related trouble codes (U-codes) or internal processor fault codes.
  • ✔ Poor engine performance, including reduced power, hesitation, or rough idling.
  • ✔ Unexplained stalling, especially after the engine has warmed up.
  • ✔ Decreased fuel economy and excessive black smoke from the exhaust.
  • ✔ Issues with the transmission shifting erratically, as the ECM communicates directly with the TCM.
  • ✔ The cooling fans run constantly, even when the engine is cold.

The Importance of VIN Programming

You cannot simply take an ECM from another truck and install it in yours. Modern vehicles use complex software that is tailored to the specific VIN. Our professional programming service ensures this module is a true plug-and-play solution. By providing us with your VIN at checkout, you guarantee that the computer will work seamlessly with your truck’s existing systems, including the anti-theft system (VATS), instrument cluster, and transmission controller. This eliminates the need for an expensive trip to the dealership for programming.

This module is a direct replacement for a wide range of part numbers, ensuring broad compatibility across the GM HD truck and van lineup for 2006 and 2007 (classic body style). Compatible part numbers include: 19260753, 12588335, 12606126, 12606127, 19260753, 12603623, 12604137, and YNAY. Restore the reliability and performance of your vehicle with a dependable, correctly prepared Duramax LLY ECM.

Frequently Asked Questions

Do I need to do anything after installing this ECM?

In most cases, this is a plug-and-play installation. However, some vehicles may require a security relearn procedure, which can typically be done without special tools. The procedure usually involves cycling the key in the ignition and waiting for a set period. We include general instructions to guide you through this simple process if it’s needed.

How do I provide my VIN for programming?

After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot ship the module until we receive your VIN, as the programming is the most critical step.

Will this fix my specific problem?

This ECM will resolve issues directly caused by a faulty engine computer. While the symptoms listed are common for ECM failure, we always recommend a proper diagnosis by a qualified mechanic to rule out other potential causes like wiring, sensors, or fuel system components.

Is this a new or used part?

This is a high-quality, inspected, and tested used OEM part. Each module is verified to be fully functional before being programmed with the latest GM software for your specific VIN, ensuring OEM-level performance and reliability.

Where is the ECM located on my truck?

On 2006-2007 classic body style Silverado and Sierra pickups, the ECM is located on the driver’s side, in the engine bay, under the battery tray. On Express and Savana vans, it is located in the left-hand rear of the engine compartment. Always disconnect the battery before attempting to remove or install the module.

Genuine OEM

Yes

Year
Condition

Refurbished

MPN

YNAY

Interchange part number

PartNumber

590

Model

savana-3500

Year

2007

Brand

GM

Manufacturer Part Number

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