Is Your Chevrolet Cruze Experiencing Engine Problems?
If your 2011-2012 Chevrolet Cruze, Sonic, or other compatible GM vehicle is suffering from erratic behavior like stalling, no-start conditions, a persistent Check Engine Light, or poor fuel economy, a failing Engine Control Module (ECM) is a very likely culprit. The ECM is the central computer of your vehicle’s powertrain, responsible for managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can cause a wide range of frustrating and difficult-to-diagnose issues. This replacement ECM, part number 12630789, is the definitive solution to restore your vehicle’s performance and reliability.
Why Choose a VIN-Programmed 2011-2012 Cruze ECM?
Replacing an ECM isn’t as simple as swapping out a battery. Modern vehicle computers are coded specifically to the Vehicle Identification Number (VIN) of the car they belong to. They communicate with other modules like the transmission controller, body control module, and anti-theft system. A non-programmed module from a salvage yard simply will not work and will likely prevent the vehicle from starting. Our service eliminates this complexity. We take your vehicle’s VIN and flash this ECM with the correct, factory-specified software and calibrations directly from GM. This ensures that when you receive the part, it is ready for a straightforward installation, saving you a costly trip to the dealership for programming.
Common Symptoms of a Failing Cruze ECM
- ✔ Check Engine Light: The light may be on constantly or flash intermittently with codes related to processor faults (e.g., P0601, P0606) or communication errors.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly while driving or at idle, and you might experience rough running or misfires.
- ✔ No-Start Condition: The engine may crank but refuse to start because the ECM is not commanding the fuel injectors or ignition coils to fire.
- ✔ Poor Performance & Fuel Economy: A failing module can lead to incorrect fuel and air mixtures, resulting in a noticeable drop in power and an increase in fuel consumption.
- ✔ Transmission Shifting Issues: The ECM works with the Transmission Control Module (TCM) to ensure smooth shifts. A faulty ECM can cause harsh shifting, delayed engagement, or the transmission getting stuck in one gear.
- ✔ Intermittent Electrical Problems: Seemingly unrelated issues with cooling fans, gauges, or other systems can sometimes be traced back to a failing ECM.
Installation and Compatibility
This module is a direct-fit replacement for original part number 12630789 and is also compatible with part numbers 12679199, 12642927, 12636386, and 12621466. It fits a wide range of GM vehicles, including:
- 2011-2012 Chevrolet Cruze (1.8L)
- 2009-2011 Chevrolet Aveo
- 2013 Chevrolet Spark
- 2009-2010 Pontiac Wave
- 2013-2014 Chevrolet Trax (1.8L)
- 2012 Chevrolet Sonic (1.8L)
- 2009-2010 Pontiac G3
While installation is straightforward for a qualified technician, it is critical to disconnect the vehicle’s battery before beginning. After installing the new module, you may need to perform a simple security relearn procedure (often called a “key cycle relearn”), which can typically be done without special tools. Instructions are readily available online for this process. By ordering this pre-programmed module, you are bypassing the most difficult part of the job and getting your vehicle back on the road quickly.
Frequently Asked Questions
Do I need to send my old ECM to you?
No, there is no core charge or need to send in your old part. This is a direct purchase. You simply provide your vehicle’s VIN during the checkout process.
Is this ECM truly plug-and-play?
Yes, for the vast majority of vehicles. We program it with your VIN so it communicates correctly with your car’s other systems. In some cases, a simple security relearn procedure may be required after installation, which typically involves a series of key cycles.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
What if my original part number is not 12630789 but is on the compatible list?
That is perfectly fine. This module is the latest hardware version and is a direct replacement for all the part numbers listed (12679199, 12642927, 12636386, 12621466). We will program it to function identically to your original part, but with the newest available software.
Will this fix my specific problem?
This part is a solution for a failed ECM. While the symptoms listed are very common for ECM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the source of your issue before ordering.