If your 2010-2011 Buick Enclave is suffering from frustrating issues like intermittent stalling, a persistent Check Engine Light, or a complete no-start condition, the Engine Control Module (ECM) is a very likely culprit. As the brain of your vehicle’s engine, a failing ECM can cause a cascade of problems that are often misdiagnosed. I’ve spent two decades under the hood, and I’ve seen firsthand how a faulty module can mimic everything from a bad fuel pump to a faulty transmission. This isn’t just a replacement part; it’s a direct solution to restore your vehicle’s performance and reliability.
We take the guesswork and high dealership costs out of the equation. When you purchase this ECM, we flash it with the latest official GM software updates specifically for your vehicle. All we need is your Vehicle Identification Number (VIN) at checkout. This ensures that when the module arrives, it’s ready to integrate seamlessly with your Enclave’s systems, restoring factory communication and operational parameters. For you, this means a simpler, more straightforward repair process without the need for expensive, specialized programming tools.
Common Signs of a Failing ECM
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ The vehicle stalls unexpectedly while driving or at idle.
- ✔ Rough idling, misfires, or hesitation during acceleration.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Automatic transmission shifting issues or harsh engagement.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Traverse with a maddening intermittent stalling problem. They had already replaced the fuel pump and a few sensors based on another shop’s advice, but the issue persisted. No consistent codes were stored, just a history of random communication faults. In my experience, when you see a wide array of unrelated electrical gremlins, the central computer is often the source. We connected our professional diagnostic tool and monitored the live data streams from the ECM. We noticed the 5-volt reference signal would momentarily drop out right before a stall—a classic sign of an internal ECM failure. We installed a VIN-programmed ECM just like this one, and the Traverse ran perfectly. It saved the customer from throwing more money at parts they didn’t need.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow capacitors to discharge before starting work.
- ✔ Locate the ECM: On the Enclave, Acadia, and Traverse, the ECM is typically located behind the fan shroud in the engine bay. It’s a silver metal box with several large electrical connectors.
- ✔ Disconnect Connectors: Carefully release the locking tabs on each electrical harness connector and pull them straight out from the module. Avoid pulling on the wires themselves.
- ✔ Remove the Old Module: Unbolt the mounting hardware that secures the old ECM to its bracket. Note the orientation before removing it completely.
- ✔ Install the New Module: Mount your new, pre-programmed ECM in the same position. Secure it with the original hardware.
- ✔ Reconnect and Secure: Firmly plug the electrical connectors back into the new module until they click into place. Reconnect the negative battery terminal.
- ✔ Final Step: Some vehicles may require a security relearn procedure, which can often be done without special tools by cycling the key. Consult your vehicle’s service information for specific steps if needed.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles equipped with the 3.6L V6 engine. It is compatible with part numbers 19300015, 19300014, 12617230, 12636355, and 12635019.
- ✔ 2010-2011 Buick Enclave (Located behind fan shroud)
- ✔ 2010-2011 Buick LaCrosse (Located in LH engine compartment) *
- ✔ 2010 Buick Allure (Located in LH engine compartment) *
- ✔ 2010-2011 Cadillac CTS (Located in RH front engine compartment)
- ✔ 2010-2011 Cadillac STS (Located in RH engine compartment)
- ✔ 2010-2011 Chevrolet Camaro (3.6L) *
- ✔ 2010-2011 Chevrolet Traverse (Located behind fan shroud)
- ✔ 2010-2011 GMC Acadia (Located behind fan shroud)
- ✔ 2010 Saturn Outlook (Located behind fan shroud)
*Important Note for Camaro & LaCrosse/Allure Owners: For these specific models, a truly plug-and-play experience requires us to transfer immobilizer data from your original ECM. After your purchase, we will contact you with simple instructions for sending your old module to us for this service.
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to load the exact, correct GM software for your vehicle’s specific configuration, including engine, transmission, and emissions options. This ensures proper function and avoids compatibility issues.
Is this a simple plug-and-play part?
For most listed vehicles, yes! Because we program it to your VIN, it’s ready for installation. For the Camaro and LaCrosse/Allure, we require your old module to transfer security data, which makes the new one plug-and-play once you receive it.
Will this fix my Check Engine Light?
If the Check Engine Light is caused by an internal ECM failure (like codes P0601, P0602, P0606), then yes, this part is the correct fix. It’s crucial to have your vehicle properly diagnosed to ensure the ECM is the root cause.
Do I need to take my car to the dealer after installation?
No. Our VIN programming service is designed to eliminate the need for a trip to the dealership for software flashing, saving you significant time and money.
What is the process for my Camaro/LaCrosse?
After you place your order, we will email you with a prepaid shipping label and instructions. You’ll send us your original ECM, we’ll read the immobilizer data, program your new ECM with it, and ship both modules back to you.