Is Your GM Vehicle Running Rough? It Could Be The ECM.
If your 2009 Buick Enclave, GMC Acadia, or other compatible GM vehicle is suffering from mysterious and frustrating issues like stalling, poor fuel economy, or a persistent Check Engine Light, the root cause is often a failing Engine Control Module (ECM). The ECM is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting and emissions. When it starts to fail, it can create a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs. This is your direct-fit, reliable solution.
The Simple Solution: A VIN-Programmed 2009 Enclave ECM Replacement
Stop the guesswork and replace the core of your engine’s management system. We offer a high-quality Engine Control Module, part number 12623325, that arrives at your doorstep programmed specifically for your vehicle. Using the VIN you provide, we load the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance, effectively restoring your vehicle’s brain to factory-fresh condition. This process eliminates the need for an expensive trip to the dealership for programming, saving you both time and money.
From the Diagnostic Bay
A customer brought in a 2009 Acadia with a complaint of random misfires and harsh shifting. They had already spent hundreds replacing spark plugs, ignition coils, and even a throttle body based on advice from forums and another shop. The problems persisted. After hooking up our professional scan tool, we noticed the injector pulse width commands were erratic on two cylinders, but the injectors themselves tested fine. This pointed us directly to the ECM’s driver circuit. We installed one of our VIN-programmed modules, performed a quick security relearn, and the engine immediately smoothed out. The transmission shifted perfectly on the test drive. It’s a classic case of treating the cause, not just the symptoms, and a failing ECM is often the hidden culprit.
Common Symptoms of a Failing ECM
If you’re experiencing any of the following issues, a faulty ECM is a likely suspect. This 2009 Enclave ECM Replacement is designed to resolve these common problems:
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Engine misfires, hesitation, or stumbling during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start or intermittent starting issues.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass emissions testing.
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for a range of original equipment part numbers, ensuring a perfect match for your vehicle. The installation is straightforward for a DIY mechanic or any professional technician. While the module is programmed for your engine and options, a simple ‘Security Relearn’ procedure is typically required after installation to sync the new ECM with your vehicle’s anti-theft system. This can often be done without special tools and we can provide instructions to guide you.
This module is a direct replacement for the following part numbers:
- 12623325
- 12628387
- 12605672
- 12630594
- 19300016
Verified Fitment For These Vehicles:
- 2009 Buick Enclave: Electronic Control Module (behind fan shroud)
- 2009 GMC Acadia: Electronic Control Module (behind fan shroud)
- 2009 Chevrolet Traverse: Electronic Control Module (behind fan shroud)
- 2009 Saturn Outlook: Electronic Control Module (behind fan shroud)
- 2008-2009 Cadillac CTS: Electronic Control Module (RH front engine compartment), 3.6L, VIN V (8th digit)
- 2008-2009 Cadillac STS: Electronic Control Module (RH engine), 3.6L
Ordering your 2009 Enclave ECM Replacement is the most effective way to restore your vehicle’s performance and reliability. Simply provide your VIN during or after checkout, and we’ll handle the complex programming. Get your vehicle back on the road and running like new.
Frequently Asked Questions
Is this module difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The most critical step after installation is performing the security relearn procedure, which pairs the new ECM to your vehicle’s anti-theft system. We can provide guidance for this step.
How do I provide my vehicle’s VIN?
You can add your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout. If you forget, we will contact you via email after your purchase to request it. We cannot ship the module until we have programmed it with your specific VIN.
What happens if I don’t do the security relearn?
If the security relearn procedure is not completed successfully, your vehicle’s anti-theft system will activate, and the engine will not start. This is a standard security feature on all modern GM vehicles.
Is this part new or used?
This is a quality, tested component that has been verified for full functionality. It is programmed with the latest GM software for your vehicle, ensuring reliable performance and longevity.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty ECM, this replacement will resolve the issue. However, it’s crucial to ensure your vehicle has been properly diagnosed, as other failing sensors or components can also trigger a check engine light.