Restore Your Vehicle’s Performance and Reliability
Is your Buick, Cadillac, or Chevy plagued by a persistent check engine light, erratic engine behavior, or a frustrating no-start condition? The Engine Control Module (ECM) is the brain of your vehicle’s powertrain, and when it fails, it can cause a cascade of confusing and costly problems. As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can sideline an otherwise perfectly good vehicle. This isn’t just a replacement part; it’s a complete, ready-to-install solution for your 2010-2011 GM vehicle with the 3.6L engine.
We take the guesswork and dealership hassle out of the equation. When you order this ECM, we professionally program it with the latest GM software updates using the unique Vehicle Identification Number (VIN) from your car. This ensures seamless communication between the module and your vehicle’s other systems, restoring the original performance and efficiency you expect. Simply provide your VIN after purchase, and we’ll handle the complex programming before it even ships.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the Old ECM: The location varies by model (e.g., LH engine compartment on a LaCrosse/Allure, behind the fan shroud on a Traverse). Consult a repair manual for your specific vehicle if you’re unsure.
- ✔ Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that may need to be pressed or lifted. Once disconnected, unbolt the old module from its mounting bracket.
- ✔ Install the New Module: Bolt your new, pre-programmed ECM into place. Ensure it is secure.
- ✔ Reconnect and Secure: Firmly plug the wiring harnesses into the new module. You should hear or feel a click as they lock into place. Give them a gentle tug to ensure they are secure.
- ✔ Final Step: Reconnect the negative battery terminal. Your vehicle is now ready to start. In some cases, a security relearn procedure may be required, which typically involves cycling the key.
From the Diagnostic Bay: The Intermittent Gremlin
A customer brought in a 2011 Cadillac CTS 3.6L with an issue that was driving them crazy. The car would randomly fail to start, but only after it was warm. There were no consistent trouble codes, just a generic U0100 ‘Lost Communication with ECM’ that would pop up occasionally. We checked grounds, wiring, and power feeds for hours. Everything seemed fine. On a hunch, I used a heat gun to gently warm the ECM, and sure enough, the car wouldn’t start. The internal processor was failing under thermal stress. We replaced it with a VIN-programmed module like this one, and the problem was solved instantly. This is a classic example of how a failing 2010 Allure ECM or its equivalent can create phantom issues that are a nightmare to diagnose.
Is Your GM Showing These Symptoms?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, your engine computer could be the culprit:
- ✔ Check Engine Light is illuminated with codes like P0601, P0606 (Internal Module Failure) or communication codes.
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable drop in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Transmission shifting issues or harsh engagement.
- ✔ Failure to pass state emissions testing.
Verified Vehicle Compatibility
This module is a direct-fit, programmed solution for the following vehicles equipped with the 3.6L engine. It is a reliable replacement for part numbers 19300015, 19300014, 12617230, 12636355, and 12635019.
- 2010-2011 Buick LaCrosse (LH engine compartment)
- 2010 Buick Allure (LH engine compartment)
- 2010-2011 Cadillac CTS (RH front engine compartment)
- 2010-2011 Cadillac STS (RH engine)
- 2010-2011 Chevrolet Camaro (3.6L)
- 2010-2011 Chevrolet Traverse (behind fan shroud)
- 2010-2011 GMC Acadia (behind fan shroud)
- 2010-2011 Buick Enclave (behind fan shroud)
- 2010 Saturn Outlook (behind fan shroud)
Important Note for Camaro & LaCrosse 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
Do I need to do any programming or flashing myself?
No. We handle all the programming before we ship the module. It will arrive at your door loaded with the latest GM software and coded to your vehicle’s VIN, ready for installation.
What is a VIN and where do I find it?
The VIN is your vehicle’s 17-digit identification number. You can typically find it on the driver’s side of the dashboard (viewable through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.
Why do I need to send my old ECM for a Camaro or LaCrosse?
These models have specific anti-theft (immobilizer) information stored in the ECM that cannot be programmed by VIN alone. To ensure your keys work correctly without a trip to the dealer, we must read this data from your old module and write it to the new one. We provide instructions to make this process easy.
What if my original part number isn’t 19300014?
This module is a fully compatible replacement for several part numbers, including 19300015, 12617230, 12636355, and 12635019. As long as your vehicle is on the compatibility list, this module will function correctly.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (common codes P0601-P0606) or related communication faults, this part is the correct fix. However, a check engine light can be caused by many other components, so proper diagnosis is always recommended.