Restore Peak Performance to Your GM Truck or Van
Is your 2009-2010 GMC Sierra 2500, Silverado, or other compatible GM vehicle suffering from frustrating engine problems? Issues like a persistent check engine light, poor fuel economy, erratic shifting, or even a no-start condition can often be traced back to a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, responsible for managing everything from fuel mixture and ignition timing to transmission control and emissions systems. When it fails, the entire vehicle’s performance and reliability are compromised.
This replacement Engine Control Module, part number 12625455 (also compatible with 12629009), is the definitive solution to get your vehicle back on the road and running smoothly. We take the guesswork and high cost out of the repair process. Unlike a generic part from a local store, each module we ship is professionally programmed with the latest official GM software updates specifically for your vehicle. All we need is your Vehicle Identification Number (VIN) at the time of purchase. This ensures that when the part arrives, it’s a true plug-and-play solution, restoring your vehicle to its original factory specifications without requiring an expensive trip to the dealership for programming.
Expert Pro Tip
Expert Pro Tip
Before replacing your ECM, it’s crucial to perform a few basic checks. Ensure your vehicle’s battery is fully charged and passes a load test. Then, carefully inspect the main engine and chassis ground connections. A loose or corroded ground wire can cause a wide range of electrical problems that perfectly mimic the symptoms of a failed ECM. Cleaning and tightening these connections can sometimes resolve the issue without needing a new part.
Diagnosing a Faulty 2009-2010 Sierra 2500 ECM
A failing engine computer can manifest in numerous ways, often starting as intermittent issues that worsen over time. If you’re experiencing any of the following symptoms, a faulty ECM is a likely culprit. Proper diagnosis is key, but these signs are strong indicators that your vehicle’s main computer needs attention.
- ✔ Check Engine Light: The check engine light is illuminated, and you may have codes related to module communication, sensor circuits, or processor faults.
- ✔ Engine Performance Issues: Noticeable loss of power, engine stumbling, misfires, or rough idling.
- ✔ Poor Fuel Economy: A sudden and unexplained drop in your vehicle’s gas mileage.
- ✔ Transmission Problems: Harsh or erratic shifting, or the transmission getting stuck in one gear (limp mode).
- ✔ Starting Problems: The engine cranks but refuses to start, or it fails to crank at all despite a good battery.
- ✔ Stalling: The engine stalls unexpectedly while driving or when coming to a stop.
A Simple, Reliable Solution
Don’t let a faulty ECM keep your truck off the road. Our VIN-programmed modules provide a straightforward and dependable repair. By matching the software to your exact vehicle, we ensure all systems communicate correctly, from the engine and transmission to the anti-lock brakes and instrument cluster. This unit is a direct replacement for a wide range of popular 2009-2010 GM trucks, vans, and SUVs, including the Silverado 2500/3500, Express/Savana vans, Suburban, Tahoe, Yukon, and Escalade. Please verify the part number and check the detailed fitment list to confirm compatibility with your specific model and engine option.
Frequently Asked Questions
Expert Pro Tip
Before replacing your ECM, it’s crucial to perform a few basic checks. Ensure your vehicle’s battery is fully charged and passes a load test. Then, carefully inspect the main engine and chassis ground connections. A loose or corroded ground wire can cause a wide range of electrical problems that perfectly mimic the symptoms of a failed ECM. Cleaning and tightening these connections can sometimes resolve the issue without needing a new part.