Restore Your Vehicle’s Brain and Get Back on the Road
Is a persistent Check Engine Light dimming your driving experience? Are you dealing with frustrating issues like rough idling, stalling, poor fuel economy, or a vehicle that simply won’t start? These are classic signs of a failing Engine Control Module (ECM). This vital component is the central computer of your vehicle, and when it falters, everything is affected. This listing offers the definitive solution: a professionally programmed Engine Control Module, ready for installation in your vehicle.
Common Symptoms & Your Solution
A faulty ECM can manifest in numerous ways, often triggering Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault). You might also experience erratic transmission shifting, engine misfires, or a complete no-start condition. Instead of facing expensive diagnostic fees and programming charges at a dealership, this unit provides a direct, reliable fix. We take your vehicle’s unique Vehicle Identification Number (VIN) and flash this module with the latest, most stable software updates from GM, ensuring it communicates perfectly with your vehicle’s systems right out of the box. This is the professional-grade solution to restore your vehicle’s performance and reliability.
- ✔ VIN-Programmed for Your Vehicle: This isn’t a generic, one-size-fits-all part. We program the module specifically to your VIN, ensuring a seamless, plug-and-play installation experience.
- ✔ Loaded with Latest GM Updates: Your ECM will arrive with the most current factory software, correcting common drivability issues and optimizing engine performance and fuel efficiency.
- ✔ Broad Compatibility: A direct replacement for multiple part numbers including 12668866, 12668994, 12643636, and 12670335, this 2014-2016 Cadillac ELR engine control module also fits a wide range of other GM vehicles.
- ✔ Eliminate Drivability Problems: Resolve issues like harsh shifting, poor acceleration, and inconsistent engine performance by replacing the core component responsible for engine management.
- ✔ Cost-Effective Dealership Alternative: Get a fully programmed module delivered to your door, saving you the time, hassle, and high costs associated with dealership programming and service.
- ✔ Assured Quality: This unit is backed by our one-year replacement warranty.
Expert Diagnostic Tip
Before condemning your ECM, it’s crucial to verify that all power and ground circuits to the module are clean, tight, and functioning correctly. A poor ground connection is a common culprit that can mimic the symptoms of a failed ECM. A quick check with a multimeter can save you time and confirm that you’re replacing the right part. When you do need a replacement, choosing a professionally programmed 2014-2016 Cadillac ELR engine control module like this one is the key to a lasting repair.
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. This module arrives fully programmed to your vehicle’s VIN. However, depending on your specific model, you may need to perform a simple security relearn procedure (often called a key relearn or anti-theft relearn), which typically involves a series of key cycles and can be done without any special tools. Instructions are readily available online for most vehicles.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is specific to your car or truck.
Is this a guaranteed fix for my check engine light?
This ECM will resolve any issues and diagnostic trouble codes directly caused by a faulty module. If your vehicle has other underlying mechanical or electrical problems (e.g., a bad sensor, wiring issue), those will need to be addressed separately. This part is a crucial step for any codes related to internal processor failure, like P0601 or P0606.
Does this part fit models other than the Cadillac ELR?
Yes, absolutely. While this is the correct 2014-2016 Cadillac ELR engine control module, it also fits a very wide range of GM vehicles, including the Chevy Cruze, Sonic, Trax, Volt, Express vans, and GMC/Chevy work trucks like the Silverado and Sierra. Please check the detailed fitment list on this page to confirm compatibility with your exact year, make, and model.
What is a core charge?
There is no core charge for this item. You are not required to send your old, faulty module back to us.