Is Your Buick LaCrosse Experiencing Frustrating Engine Problems?
A faulty Engine Control Module (ECM) can be the hidden cause of persistent issues that disrupt your car’s smooth, reliable performance. If you’re dealing with a check engine light that won’t go away, poor fuel economy, stalling, or a complete no-start condition, your vehicle’s central computer may be to blame. This isn’t just an inconvenience; it’s a critical failure that compromises your car’s safety and drivability. We offer a straightforward, reliable solution to get you back on the road with confidence.
Common Symptoms & Your Solution
A failing ECM can manifest in numerous ways. You might be experiencing one or more of the following:
- Persistent Check Engine Light (CEL) with various Diagnostic Trouble Codes (DTCs).
- Engine misfires, stumbling, or rough idling.
- Reduced engine power and poor acceleration.
- Noticeable decrease in fuel efficiency.
- Intermittent stalling or difficulty starting the engine.
- Communication errors with diagnostic scan tools.
This pre-programmed Engine Control Module is the definitive solution. It serves as a direct 2010-2011 Buick LaCrosse ECM replacement, arriving at your door flashed with the latest official GM software tailored specifically to your vehicle’s Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming or specialized tools, turning a complex repair into a manageable installation.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the unit with your car’s exact VIN, ensuring perfect compatibility with its engine, transmission, and options.
- ✔ Plug-and-Drive Installation: No additional programming is required. Once installed, you may only need to perform a simple security relearn procedure, which can be done without special tools.
- ✔ Latest GM Software: Your module is loaded with the most current GM updates, which can solve factory bugs and improve overall performance and efficiency.
- ✔ Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership service department with this direct, ready-to-install part.
- ✔ Restored Performance: Get your LaCrosse’s engine running as the manufacturer intended, restoring its power, smoothness, and fuel economy.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight from a 20-Year Technician: Before you install your new ECM, take a moment to inspect the battery terminals, main engine grounds, and the ECM connector pins. A poor ground connection or corrosion on a terminal can mimic ECM failure and can damage a new unit. Ensuring you have clean, tight connections is the number one thing you can do to guarantee a successful 2010-2011 Buick LaCrosse ECM replacement and prevent future issues. A few minutes of prevention can save you hours of frustration.
ALLURE 10 Electronic Control Module; (LH engine compartment), 2.4L
CTS 12 Electronic Control Module; (RH front engine compartment), 3.6L, ID 12637106
CTS 12 Electronic Control Module; (RH front engine compartment), 3.6L, ID 12650256
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12630908
IMPALA 12 Electronic Control Module; (air cleaner bracket), ID 12616889
IMPALA 12 Electronic Control Module; (air cleaner bracket), ID 12650256
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12616889
IMPALA 12 Electronic Control Module; (air cleaner bracket), ID 12637106
LACROSSE 10 Electronic Control Module; (LH engine compartment), 3.0L
SAAB 9-5 10 Electronic Control Module; VIN G (4th digit), 2.0L (VIN R, 8th digit, opt LHU), ID 12642665
CAPTIVA SPORT 12 Electronic Control Module; (LH engine compartment), ID 12630908
CAPTIVA SPORT 12 Electronic Control Module; (LH engine compartment), ID 12650256
REGAL 11 Electronic Control Module; (LH engine compartment)
CAMARO 12 Electronic Control Module; 3.6L, ID 12642665
CTS 12 Electronic Control Module; (RH front engine compartment), 3.6L, ID 12642665
CAPTIVA SPORT 12 Electronic Control Module; (LH engine compartment), ID 12642665
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12650256
CAMARO 12 Electronic Control Module; 3.6L, ID 12637106
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12637106
TERRAIN 10-11 Electronic Control Module; (LH engine compartment)
CAPTIVA SPORT 12 Electronic Control Module; (LH engine compartment), ID 12637106
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12651993
EQUINOX 10-11 Electronic Control Module; (LH engine compartment)
IMPALA 12 Electronic Control Module; (air cleaner bracket), ID 12630908
IMPALA 12 Electronic Control Module; (air cleaner bracket), ID 12642665
CTS 10-12 Electronic Control Module; (RH front engine compartment), 3.0L
CTS 12 Electronic Control Module; (RH front engine compartment), 3.6L, ID 12616889
CAPTIVA SPORT 12 Electronic Control Module; (LH engine compartment), ID 12616889
CAMARO 12 Electronic Control Module; 3.6L, ID 12650256
SRX 10-11 Electronic Control Module; (LH engine compartment), 3.0L
CTS 12 Electronic Control Module; (RH front engine compartment), 3.6L, ID 12630908
LACROSSE 10-11 Electronic Control Module; (LH engine compartment), 2.4L
ORLANDO 12-13 Electronic Control Module; (LH engine compartment), ID 12642665
SAAB 9-5 11 Electronic Control Module; 2.0L (VIN R, 8th digit, opt LHU), ID 12642665
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. You can typically find this on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this part difficult to install?
For someone with basic mechanical skills, the physical installation is straightforward. It typically involves disconnecting the battery, unplugging the electrical connectors from the old ECM, unbolting it, and then installing the new one in reverse order. Since it’s pre-programmed, no special computer tools are needed.
Will I need to do anything after installation?
In many cases, you may need to perform a simple security relearn procedure (also known as a VATS relearn). This process syncs the new ECM with your vehicle’s anti-theft system and typically involves a sequence of turning the key in the ignition. Instructions are readily available online for your specific model.
Does this part fit other vehicles besides the Buick LaCrosse?
Yes. This ECM, part number 12651993, is compatible with a wide range of General Motors vehicles. Please carefully review the detailed fitment list on this page to confirm it matches your specific make, model, year, and engine options.
Is this the correct part if my original part number is different?
This unit replaces multiple original part numbers, including 12616889, 12630908, and others listed. As long as your vehicle is on the compatibility list, this is the correct, updated part for your car and the best 2010-2011 Buick LaCrosse ECM replacement available.