Is Your GM Diesel Truck or Van Running Rough?
If your 2006-2007 Silverado, Sierra, Savana, or Express van is suffering from inconsistent performance, a persistent check engine light, stalling, or a no-start condition, a failing Engine Control Module (ECM) is a very likely culprit. The ECM is the central computer of your vehicle’s powertrain, managing everything from fuel injection timing and turbo boost to transmission signals and emissions controls. When it begins to fail, it can cause a wide range of frustrating and difficult-to-diagnose issues, leaving your reliable workhorse dead in the water.
From the Diagnostic Bay
We once had a 2006 Silverado 2500 with the LLY Duramax come in on a tow truck. The owner had spent a fortune replacing injectors, the fuel pressure regulator, and even the FICM, chasing an intermittent no-start and a rough idle. The codes were all over the place. After hooking up our diagnostic tools, we noticed the data stream from the ECM was erratic. On a hunch, we checked the main ECM connector and found no issues. We connected a known-good ECM, and the truck fired up instantly and idled perfectly. The original ECM had internal circuit board damage that was causing intermittent signal loss to the injectors. It’s a classic case where throwing parts at a problem costs more than correctly diagnosing the root cause—the brain itself.
Why Choose Our Programmed 2006-2007 Savana 3500 ECM?
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and hassle out of ECM replacement. This module, compatible with part number 19260753 and many others, arrives at your door pre-programmed with the latest official GM software updates, specifically matched to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures seamless integration and optimal performance, eliminating the need for an expensive trip to the dealership for programming. Get your truck or van back to factory-spec operation without the dealership price tag.
Common Symptoms of a Failing ECM:
- ✔ Persistent Check Engine Light (CEL) with communication-related trouble codes (e.g., U-codes).
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ A complete no-start condition where the engine cranks but will not fire.
- ✔ Noticeable decrease in fuel economy and engine power.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Issues with other modules, as the ECM is a central communication hub.
- ✔ Failure to pass state emissions testing.
Guaranteed Fitment and Compatibility
This ECM is a direct-fit replacement for a wide range of 2006 and 2007 GM heavy-duty trucks and vans equipped with the LLY Duramax diesel engine (VIN 2, 8th digit). It is a verified replacement for the following part numbers: 19260753, 12588335, 12606126, 12606127, 12603623, 12604137, and YNAY. Simply confirm your vehicle is on the list below, provide your VIN upon purchase, and we’ll handle the rest. Your 2006-2007 Savana 3500 ECM will arrive ready to install, restoring the precise engine management your vehicle needs.
This part is a confirmed fit for the following vehicles:
- 2006-2007 Chevrolet Express 2500/3500 Vans (Diesel)
- 2006-2007 GMC Savana 2500/3500 Vans (Diesel)
- 2006-2007 Chevrolet Silverado 2500/3500 Pickups (Diesel)
- 2006-2007 GMC Sierra 2500/3500 Pickups (Diesel)
Note: For 2007 pickups, this fits the ‘Classic’ body style with the creased door skin.
Don’t let a faulty engine computer keep you off the road. This pre-programmed module is the most efficient and reliable way to restore your vehicle’s performance and dependability. Order today and experience the difference a correctly functioning ECM makes.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. The main benefit of our service is that we program the ECM with the latest GM calibration for your specific VIN before we ship it to you. This makes the installation process much simpler and saves you a costly trip to the dealership.
What is a CASE relearn and will I need to do one?
A CASE (Crankshaft Position System Variation) relearn procedure synchronizes the new ECM with your engine’s crankshaft position sensor. While not always required, it is highly recommended to prevent a P1336 trouble code. This procedure can often be performed with a capable bi-directional scan tool and does not necessarily require a dealership visit.
Where is the ECM located on my vehicle?
For Chevrolet Silverado and GMC Sierra pickups, the ECM is typically located in the engine bay on the driver’s side, under the battery tray. For Chevrolet Express and GMC Savana vans, it is located in the engine compartment, usually on the left-hand side.
How do I provide my VIN for programming?
After you complete your purchase, you can add your 17-digit VIN to the order notes or send it to us in a message. We cannot program and ship your module without the correct VIN, so please ensure it is accurate.
Will this fix my transmission shifting problems?
In many cases, yes. The ECM works directly with the Transmission Control Module (TCM) to ensure smooth shifting. If the ECM is sending faulty data, it can cause erratic shifting, and replacing it can resolve these issues.