Restore Peak Performance to Your Buick LaCrosse
Is your 2010 or 2011 Buick LaCrosse suffering from perplexing issues like a persistent check engine light, rough idling, stalling, or a sudden drop in fuel efficiency? These are classic signs of a failing Engine Control Module (ECM), the central computer that governs your vehicle’s engine performance, fuel system, and emissions. A faulty ECM can disrupt communication between critical sensors and systems, leading to a frustrating and unreliable driving experience. This replacement Engine Control Module, part number 12642665, is the definitive solution to restore your vehicle’s factory performance and reliability.
Expert Pro Tip
Expert Pro Tip
Before replacing your ECM, always perform a thorough diagnostic check of the basics. Ensure your battery is fully charged and the terminals are clean and tight. Inspect the main engine ground straps for corrosion or looseness. A poor ground connection can mimic many ECM failure symptoms and is a much simpler fix. A quick check can save you time and money.
Is Your Buick LaCrosse Showing Signs of ECM Failure?
A failing ECM can manifest in various ways, often starting subtly and worsening over time. If you’re experiencing any of the following, it’s a strong indication that your engine’s computer may be the culprit. Replacing it with our pre-programmed unit can resolve these problems.
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately after reset.
- ✔ Unexplained stalling or engine cutting out while driving.
- ✔ Rough or erratic idling, making the car shake at a stop.
- ✔ Noticeable decrease in fuel economy.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Transmission shifting issues or harsh shifts.
- ✔ Error codes related to module communication or sensor circuits (e.g., P0606).
The Superior Solution: A VIN-Programmed 2010-2011 LaCrosse ECM
Don’t settle for a generic, unprogrammed module that requires expensive dealership visits for flashing and key relearns. Our service simplifies the repair process entirely. When you purchase this 2010-2011 LaCrosse ECM, we handle the complex programming for you. Simply provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN) during or after checkout. Our technicians will flash the module with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your vehicle’s specific configuration, including engine size, transmission type, and factory options. This VIN-specific programming makes installation a straightforward, plug-and-play process, getting you back on the road faster.
Guaranteed Compatibility
This ECM is a direct replacement for a wide range of GM vehicles and is compatible with multiple part numbers. Please verify your part number or match your vehicle from the list below to ensure proper fitment.
Replaces Part Numbers: 12616889, 12630908, 12637106, 12642665, 12650256, 12651993
Fitment Includes:
- 2010-2011 Buick LaCrosse (2.4L, 3.0L)
- 2010 Buick Allure (2.4L, 3.0L)
- 2012 Chevrolet Camaro (3.6L)
- 2012 Chevrolet Captiva Sport
- 2012 Chevrolet Impala
- 2012-2013 Chevrolet Orlando
- 2010-2012 Cadillac CTS (3.0L, 3.6L)
- 2010-2011 Cadillac SRX (3.0L)
- 2010-2011 GMC Terrain
- 2010-2011 Chevrolet Equinox
- 2011 Buick Regal
- 2010-2011 Saab 9-5 (2.0L)
Note: This is not an exhaustive list. Please confirm your part number or contact us with your VIN to verify compatibility.
Frequently Asked Questions
Expert Pro Tip
Before replacing your ECM, always perform a thorough diagnostic check of the basics. Ensure your battery is fully charged and the terminals are clean and tight. Inspect the main engine ground straps for corrosion or looseness. A poor ground connection can mimic many ECM failure symptoms and is a much simpler fix. A quick check can save you time and money.