Restore Peak Performance to Your GM Truck or SUV
Is your 2009-2010 GMC Yukon, Chevy Silverado, or other GM vehicle suffering from perplexing electrical issues, poor engine performance, or a persistent Check Engine Light? The Engine Control Module (ECM), the central computer of your vehicle, is often the root cause. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, it can cause a cascade of problems that can be difficult to diagnose. This replacement Engine Computer, part number 12629009, is the definitive solution to get your vehicle running reliably again.
The Plug-and-Play Solution for Your Vehicle
Forget expensive trips to the dealership for programming and diagnostics. We offer a simple, direct solution. When you order this ECM, we program it specifically to your vehicle’s Vehicle Identification Number (VIN) before it ever leaves our facility. This ensures that the module is a perfect match for your vehicle’s specific options and systems. It arrives loaded with the latest official GM software updates, addressing common issues and ensuring optimal efficiency and performance. The process is straightforward: you provide your VIN, we handle the programming, and you receive a part that is ready for installation right out of the box.
From the Diagnostic Bay
We once had a 2009 Sierra 2500 with the 6.0L engine come into the shop. The owner had spent a fortune replacing O2 sensors, the mass airflow sensor, and even the throttle body chasing an intermittent stalling issue and a P0606 (ECM Processor Fault) code. The truck would run fine for days, then suddenly die at a stoplight. After confirming power and grounds to the ECM were solid, we knew the internal processor was failing intermittently. We installed one of our VIN-programmed modules, and the truck has been running flawlessly for the owner ever since. It’s a classic case where chasing symptoms costs more than addressing the core problem: a failing engine computer.
Symptoms of a Failing Engine Computer
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer may need replacement:
- ✔ Persistent Check Engine Light (CEL) with communication-related codes (U-codes) or internal processor fault codes (P06xx codes).
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ A complete no-start condition where the engine cranks but will not fire up.
- ✔ Noticeable decrease in fuel economy.
- ✔ Erratic or harsh transmission shifting.
- ✔ Issues with other electronic systems, as the ECM communicates with multiple modules.
- ✔ Failure to pass an emissions test.
Why Choose Our Pre-Programmed 2009-2010 Yukon Engine Computer?
Choosing this replacement module is the most efficient and cost-effective way to resolve your vehicle’s issues. By replacing the faulty original unit with our precisely configured 2009-2010 Yukon Engine Computer, you are restoring the vehicle’s central nervous system. Our service eliminates the need for specialized scan tools or costly dealership labor for programming. It’s a direct-fit, reliable repair that you or your trusted mechanic can perform with confidence.
This module is a direct replacement for part numbers 12629009 and 12625455 and fits a wide range of GM vehicles beyond the Yukon, including the Chevrolet Silverado, Suburban, Tahoe, Avalanche, Express van, and the GMC Sierra, Savana van, as well as Cadillac Escalade models and even some cars like the Pontiac G6 and Chevrolet Impala. Please verify the part number and check the comprehensive fitment list to ensure compatibility with your exact model and engine configuration.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to function in your vehicle.
Is any additional programming required after installation?
No. This engine computer comes fully programmed to your VIN with the latest GM software. In most cases, it is a simple plug-and-play installation. Some vehicles may require a security relearn procedure (like a CASE relearn), which is a simple process that can often be done without special tools. Instructions can be provided if necessary.
Where is the ECM located on my vehicle?
On most trucks and SUVs like the Yukon, Sierra, and Silverado, the ECM is located in the engine compartment, typically on the driver’s side front fender area. On vans like the Express and Savana, it is often in the LH rear of the engine compartment. Always disconnect the battery before attempting to remove or install the module.
Will this fix my specific problem?
This part is a direct solution for a failed ECM. While the symptoms listed are common indicators of ECM failure, we always recommend a proper diagnosis by a qualified technician to confirm the ECM is the point of failure before ordering. This ensures you are purchasing the correct part for your repair.
Is this compatible with part number 12625455?
Yes. This module, 12629009, is a fully compatible and often updated replacement for the original part number 12625455. It will function identically once programmed for your vehicle.