Restore Your Enclave’s Performance and Reliability
Is your 2010-2011 Buick Enclave experiencing frustrating issues like stalling, erratic shifting, a persistent check engine light, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, fuel economy, and emissions. Driving with a faulty ECM can lead to poor fuel mileage, unpredictable behavior, and even leave you stranded. This isn’t just an inconvenience; it’s a critical component for your vehicle’s health and your peace of mind.
We offer a dependable and straightforward solution. This ECM, part number 12635019, is meticulously tested and prepared for your specific vehicle. The biggest hurdle in replacing an ECM is the programming—a step that typically requires an expensive trip to the dealership. We eliminate that hassle. Upon purchase, simply provide us with your vehicle’s VIN, and our experts will flash the module with the latest GM-certified software updates. This ensures that your new ECM communicates flawlessly with your Enclave’s other systems right out of the box, restoring its original performance and efficiency.
From the Diagnostic Bay
I remember a 2011 Acadia (which shares this exact ECM with the Enclave) that came into my shop with a baffling issue. The customer complained of intermittent stalling at stoplights and a weird, delayed throttle response. There were no consistent trouble codes, just a generic U0100 ‘Lost Communication with ECM’ that would pop up now and then. We checked grounds, wiring, and power feeds for hours. Finally, we decided to monitor the ECM’s internal temperature data. We found that as the module heated up in the engine bay, its processor would start to fail, causing the communication drops. Swapping in a properly programmed ECM like this one solved the problem instantly. It’s a perfect example of how an ECM can fail electronically without throwing a clear-cut code, making diagnosis tricky for many.
Is Your Vehicle Showing These Signs of ECM Failure?
- ✔ Unexplained Check Engine Light illumination.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle will not start, even with a good battery and starter.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or U0100.
A Straightforward Guide to Installation
Installing your pre-programmed 2010-2011 Enclave ECM is a manageable task for a confident DIYer. On these GM SUVs, the ECM is conveniently located behind the fan shroud.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to discharge.
- Locate the Module: Find the ECM, which is typically mounted behind the engine’s cooling fan shroud. You may need to remove a plastic cover for access.
- Disconnect Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the old ECM. Never force them. Inspect the connectors for any corrosion or damage.
- Remove the Old ECM: Unbolt the old module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed ECM in place and tighten the bolts securely.
- Reconnect Everything: Plug the electrical harnesses back into the new module until they click firmly into place. Reconnect your vehicle’s negative battery terminal.
- Final Steps: Depending on your vehicle, a security relearn procedure may be required. This can often be done without special tools by cycling the key. Your vehicle is now ready to start.
Important Note for Camaro & LaCrosse Owners: For these specific models, the immobilizer (anti-theft) data is stored differently. To ensure a true plug-and-play installation, we require you to send us your original ECM. We will extract the immobilizer information and program it into your new module before shipping. We will contact you with instructions after your purchase.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles equipped with the 3.6L engine. It is compatible with part numbers 19300015, 19300014, 12617230, 12636355, and 12635019.
- 2010-2011 Buick Enclave – Electronic Control Module; (behind fan shroud)
- 2010-2011 Buick LaCrosse – Electronic Control Module; (LH engine compartment), 3.6L
- 2010 Buick Allure – Electronic Control Module; (LH engine compartment), 3.6L
- 2010-2011 Cadillac CTS – Electronic Control Module; (RH front engine compartment), 3.6L
- 2010-2011 Cadillac STS – Electronic Control Module; (RH engine), (3.6L)
- 2010-2011 Chevrolet Camaro – Electronic Control Module; 3.6L
- 2010-2011 Chevrolet Traverse – Electronic Control Module; (behind fan shroud)
- 2010-2011 GMC Acadia – Electronic Control Module; (behind fan shroud)
- 2010 Saturn Outlook – Electronic Control Module; (behind fan shroud)
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the latest official software from GM and program the ECM specifically for your vehicle’s configuration, including engine, transmission, and emissions options. This ensures perfect compatibility and performance.
Is this a plug-and-play part?
Yes, for most listed vehicles, this ECM is plug-and-play. Once you install it, your vehicle will start and run correctly. For the 2010-2011 Camaro and LaCrosse, we must transfer immobilizer data from your old unit to make the new one plug-and-play, which requires you to send your old module to us first.
What does the ECM actually do?
The ECM is the ‘brain’ of your engine. It takes data from sensors all over the vehicle (like oxygen sensors, throttle position, and engine speed) and uses it to control fuel injection, ignition timing, and transmission shifts to provide the best balance of power, efficiency, and low emissions.
Do I need a mechanic to install this?
While professional installation is always an option, a knowledgeable DIYer with basic hand tools can typically replace this module in about an hour. Our installation guide provides the key steps to follow.
Will this fix my check engine light?
If the check engine light is on due to an internal failure of the original ECM (e.g., codes P0601, P0606), then replacing it with this correctly programmed module will resolve the issue. If the light is on for another reason, like a bad sensor, that part will still need to be addressed.