End Your Engine Troubles and Get Back on the Road Fast
Is your GMC Acadia, Buick Enclave, or Cadillac CTS running rough, stalling unexpectedly, or showing a persistent Check Engine Light? A failing Engine Control Module (ECM) is often the culprit behind these frustrating and concerning issues. Don’t let a faulty computer keep you sidelined. This direct-fit Engine Control Module is the definitive solution, arriving at your door fully programmed to your vehicle’s specific VIN. This means no expensive trips to the dealership for programming—it’s ready for installation right out of the box, restoring your vehicle’s performance, reliability, and drivability.
Common Symptoms & Your Direct-Fit Solution
A failing ECM can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, this module is your solution:
- Persistent Check Engine Light (CEL) with codes like P0601, P0602, or P0606
- Engine stalling or shutting off while driving
- Rough or erratic idling
- Noticeable decrease in fuel economy
- Difficulty starting the engine or a complete no-start condition
- Hesitation or stumbling during acceleration
- Apparent transmission shifting problems linked to engine performance
This isn’t just a replacement part; it’s a complete, ready-to-install solution. By purchasing this 2009 GMC Acadia ECM, you’re bypassing the most complicated part of the repair process. We handle the complex programming so you can focus on the straightforward installation.
Features & Benefits You Can Count On
- âś” Plug & Drive Installation: This module arrives pre-programmed to your vehicle’s unique VIN. No additional flashing or dealer visits are required, saving you hundreds of dollars and significant time.
- âś” Latest GM Software: We flash your ECM with the newest, most stable software updates from General Motors, ensuring optimal engine performance, fuel efficiency, and emissions compliance.
- âś” Guaranteed Compatibility: This unit is a direct replacement for multiple part numbers, including 12623325, 12628387, 12605672, 12630594, and 19300016, ensuring a perfect match for your vehicle.
- âś” Restored Performance: Eliminate rough idle, poor acceleration, and stalling. Your vehicle will run smoothly and reliably, just as it was designed to.
- âś” Peace of Mind Included: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
“In my 20 years of diagnostics, I’ve seen countless vehicle owners buy a used computer online, only to find it won’t work because it’s not programmed for their car. The ECM is the ‘brain’ of your engine; it controls everything from fuel mixture to spark timing. It’s not a one-size-fits-all part. It must be specifically matched to your car’s VIN, which contains information about its engine, transmission, and factory options. Our programming service isn’t just a convenience—it’s the critical step that ensures the part will actually function correctly and safely in your vehicle. We take the guesswork and dealer-level complexity out of the equation for you.”
This 2009 GMC Acadia ECM is also a perfect fit for a range of other GM vehicles, including the 2009 Buick Enclave, Chevrolet Traverse, Saturn Outlook, and the 2008-2009 Cadillac CTS and STS models with the 3.6L engine. Verify your fitment using the list provided and get the right part, the first time. Take control of your repair and restore your vehicle’s health with this reliable, pre-programmed 2009 GMC Acadia ECM.
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. We handle 100% of the programming before the module is shipped to you. It will arrive ready to be installed. In some cases, a simple, tool-free “key relearn” procedure may be required, which typically involves turning the key in the ignition for 10-15 minutes. Instructions are readily available and easy to follow.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically find this on your vehicle’s registration, insurance card, or on a small plate on the driver’s side of the dashboard, visible through the windshield.
What if my original part number isn’t 12628387?
No problem. This module is a compatible replacement for several part numbers, including 12623325, 12605672, 12630594, and 19300016. As long as your original module’s part number is on this list, this unit will work perfectly for your vehicle.
How can I be sure the ECM is the actual problem?
While the symptoms listed are strong indicators of a failing ECM, we always recommend a proper diagnosis by a qualified mechanic. Common diagnostic trouble codes (DTCs) pointing to a bad ECM include P0601 (Internal Control Module Memory Check Sum Error) and P0606 (ECM/PCM Processor Fault). A professional diagnosis can confirm the ECM is the root cause before you purchase a replacement.
Will this fit vehicles other than the 2009 Acadia?
Yes. This ECM fits a range of 2008-2009 GM vehicles with the 3.6L engine, including the Buick Enclave, Chevy Traverse, Saturn Outlook, Cadillac CTS, and Cadillac STS. Please refer to the detailed fitment list on this page to confirm compatibility with your specific model and year.