Restore Peak Performance to Your GM Vehicle
Is your 2009-2010 Cadillac Escalade ESV, or another compatible GM vehicle, suffering from perplexing engine issues? An illuminated Check Engine Light, rough idling, stalling, or a sudden drop in fuel efficiency are all classic signs that the brain of your engine—the Engine Control Module (ECM)—may be failing. This vital component orchestrates everything from fuel injection to ignition timing. When it falters, the entire vehicle’s performance and reliability are compromised. This replacement Engine Control Module, part number 12625455, is the definitive solution to restore your vehicle’s factory operation and get you back on the road with confidence.
From the Diagnostic Bay
We had a 2009 Silverado 2500 in the shop that was a real head-scratcher. The owner complained of random stalling at stoplights and an occasional hard start, but there were no consistent trouble codes. We checked the fuel pump, sensors, and wiring, but everything seemed fine. On a hunch, we monitored the ECM’s data stream and noticed erratic sensor readings that didn’t match what was happening with the engine. The internal processor of the original ECM was failing intermittently. We installed one of these VIN-programmed modules, and the truck has run flawlessly ever since. It’s a great reminder that sometimes the most confusing problems lead back to the vehicle’s central computer.
Why Choose Our Programmed 2009-2010 Escalade ESV ECM?
Replacing an ECM isn’t just about swapping a part. Modern vehicles require precise software that matches their specific configuration. Our service eliminates the guesswork and costly trips to the dealership. When you purchase this module, we flash it with the latest official GM software updates using the Vehicle Identification Number (VIN) you provide. This ensures that the ECM is perfectly calibrated for your vehicle’s engine, transmission, and options, making for a seamless installation process. This isn’t just a replacement part; it’s a fully integrated solution for your vehicle.
Common Symptoms of a Failing Engine Computer
- ✔ Persistent Check Engine Light (CEL) that won’t clear
- ✔ Engine stalling or misfiring unexpectedly
- ✔ Noticeable decrease in fuel economy
- ✔ Difficulty starting the vehicle or a no-start condition
- ✔ Rough or erratic engine idling
- ✔ Poor acceleration and loss of power
- ✔ Transmission shifting problems or harsh shifts
- ✔ Communication errors with diagnostic scan tools
This module is a direct replacement for part numbers 12625455 and 12629009 and fits a wide range of popular 2009 and 2010 GM trucks, vans, and SUVs, including the Chevrolet Silverado, Suburban, Tahoe, Express, GMC Sierra, Yukon, Savana, Cadillac Escalade, Hummer H2, and more. Please verify the extensive fitment list to confirm compatibility with your specific vehicle.
Frequently Asked Questions
Why is providing my VIN so important?
Your Vehicle Identification Number (VIN) allows us to load the exact, correct GM factory software for your vehicle’s specific engine, transmission, and options. This step is critical for ensuring the engine runs correctly, the transmission shifts properly, and all systems communicate as intended. It makes the part ready to install right out of the box.
Is any additional programming required after installation?
Because we program the module to your VIN before shipping, no further programming is typically needed. However, depending on your vehicle’s security system, you may need to perform a simple security relearn procedure, also known as a key relearn. This can usually be done without special tools and instructions are widely available online.
Will this ECM fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. However, it’s crucial to properly diagnose the vehicle first. A check engine light can be triggered by many other components, such as a bad sensor or a vacuum leak. This module will only fix codes directly related to the engine computer itself.
Where is the ECM located on my vehicle?
The location varies by model. On most GM trucks and SUVs from this era (like the Silverado, Sierra, and Escalade), the ECM is located in the engine bay, typically on the driver’s side front fender. On vans like the Express and Savana, it’s often in the LH rear of the engine compartment. Always consult a repair manual for your specific vehicle to confirm the location before beginning work.
What part numbers does this module replace?
This Engine Control Module is a direct replacement for original equipment part numbers 12625455 and 12629009. If your old module has one of these numbers, this is the correct part for you.