Restore Peak Performance to Your Vehicle
Is your 2012-2013 Chevrolet Captiva Sport, or another compatible GM vehicle, suffering from perplexing issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition? The problem often lies with a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, emissions, and communication between various systems. This replacement ECM, bearing part number 12651994, is the definitive solution to restore your vehicle’s factory operation and reliability.
This isn’t just a replacement part; it’s a fully prepared component, programmed with the latest official GM software updates specifically for your vehicle’s Vehicle Identification Number (VIN). This critical programming step ensures seamless integration, correct engine parameters, and fixes for any known software bugs from the manufacturer. By providing your VIN during checkout, you receive a module that is ready for installation, eliminating the need for expensive dealership programming.
Diagnosing Your 2012-2013 Captiva Sport ECM
A faulty ECM can manifest in ways that mimic other component failures, leading to costly and frustrating diagnostic dead ends. Before replacing sensors, coils, or fuel system parts, consider if the root cause is the computer itself. Common indicators point directly to the ECM. If your vehicle is experiencing a combination of the symptoms listed below, there is a high probability that the engine computer is the culprit. This unit serves as a direct replacement for part numbers 12651994, 12643248, and 12652814, ensuring broad compatibility across numerous GM models.
From the Diagnostic Bay
We recently serviced a 2012 Chevrolet Equinox that arrived with an intermittent stalling issue and no specific trouble codes. The owner had already spent a significant amount on replacing the crankshaft and camshaft position sensors to no avail. Our technician connected a scope and monitored the 5-volt reference signal from the ECM to the sensors. We discovered the voltage would erratically drop, causing the engine to shut down. This was an internal ECM fault, not a sensor issue. Installing a VIN-programmed ECM like this one resolved the problem immediately, highlighting the importance of diagnosing the core electrical system before replacing peripheral parts.
Common Symptoms of a Failing Engine Computer
- ✔ Check Engine Light: The light is illuminated, often with communication-related (U-codes) or internal processor fault codes.
- ✔ Engine Performance Issues: You may experience random misfires, rough idling, hesitation during acceleration, or a noticeable loss of power.
- ✔ Poor Fuel Economy: A failing ECM can’t properly manage the air-fuel mixture, leading to a sudden and significant drop in MPG.
- ✔ No-Start Condition: The engine may crank but refuse to start because the ECM is not commanding fuel or spark.
- ✔ Intermittent Stalling: The vehicle may shut off unexpectedly while driving or when coming to a stop.
- ✔ Transmission Problems: The ECM works with the Transmission Control Module (TCM), and a fault can cause harsh shifting or incorrect gear selection.
Guaranteed Compatibility and Simple Installation
This module is guaranteed to be compatible with a wide array of GM vehicles from 2012-2016. Please verify your original part number against our list (12651994, 12643248, 12652814) and review the fitment list below to ensure this is the correct component for your car or SUV. Once programmed to your VIN, installation is straightforward. While it is a direct replacement, some vehicles may require a security relearn or CASE relearn procedure, which can often be performed without specialized tools. We recommend consulting a service manual for your specific model’s post-installation requirements.
This part fits the following vehicles: ACADIA 12, CAMARO 12, CAPRICE 12-13, CAPTIVA SPORT 12-13, CTS 12-14, ENCLAVE 12, EQUINOX 12, IMPALA 12-16, LACROSSE 12, MALIBU 13, ORLANDO 12-13, REGAL 12, SRX 12, TERRAIN 12, TRAVERSE 12, VERANO 12-13. Please match the ID number from your original module for a perfect fit.
Frequently Asked Questions
What is the programming process?
After you place your order, you must provide us with your vehicle’s 17-digit VIN. Our technicians will use this number to flash the module with the most current GM-certified software for your exact vehicle configuration. This ensures all systems operate as intended upon installation.
Is this module difficult to install?
The physical installation is typically simple, involving disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. However, some vehicles may require a security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This procedure is often detailed in your owner’s manual or can be found online.
How can I be sure this ECM will fix my vehicle?
This replacement ECM is guaranteed to fix any issues directly caused by a faulty engine computer. It is crucial that your vehicle has been properly diagnosed. If your problems are caused by faulty wiring, sensors, or other mechanical parts, replacing the ECM will not resolve them.
How do I find the part number on my current ECM?
The part number is printed on a sticker affixed to the case of your original ECM. You will need to locate the module in your engine bay (locations vary by model) and read the number directly from the label to confirm a match.
Does this part come with a warranty?
Yes, all our programmed modules come with a warranty against defects. Please refer to the warranty information section on our website for complete details on coverage and duration.