Restore Peak Performance to Your GM Vehicle
Is your Buick Enclave, Chevy Traverse, or GMC Acadia suffering from perplexing issues like a persistent check engine light, rough idling, poor fuel economy, or even a no-start condition? These are common indicators of a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, emissions, and efficiency. A faulty ECM can disrupt countless systems, leading to frustrating and potentially damaging driving experiences. This genuine GM ECM, part number 12644446, is the definitive solution to restore your vehicle’s factory-specified operation and reliability.
The Brain of Your Engine: Why the ECM is Crucial
Think of the ECM as the command center for your engine. It constantly processes information from a network of sensors—monitoring everything from oxygen levels in the exhaust to the position of the crankshaft. Based on this data, it makes instantaneous adjustments to the fuel injection timing, spark advance, and transmission shift points. When this vital component begins to fail, the signals become corrupted or lost, causing a cascade of performance problems. Replacing it isn’t just about fixing a single issue; it’s about restoring the entire nervous system of your vehicle’s powertrain.
From the Diagnostic Bay
We had a 2014 Acadia come into the shop with an intermittent stalling problem that no one could figure out. The owner had already replaced the throttle body and a couple of sensors. The codes were all over the place, pointing to communication errors (U-codes). After checking the wiring harness for continuity, we suspected the ECM. We swapped in one of our pre-programmed modules, and the vehicle immediately ran perfectly. It’s a classic case where the root cause wasn’t a mechanical part, but the computer making the decisions. A faulty ECM can send you on a wild goose chase, replacing perfectly good parts.
Diagnosing Your 2013-2016 Enclave ECM
A failing engine computer can manifest in various ways, often mimicking other component failures. If you’re experiencing several of the symptoms below, it’s highly probable that your ECM is the culprit. This module is the key to resolving those issues and getting your vehicle back on the road with confidence.
Common Symptoms of a Failing ECM
- ✔ Persistent and unexplained Check Engine Light (CEL).
- ✔ Engine misfires, stumbling, or hesitation during acceleration.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Stalling for no apparent reason, either at idle or while driving.
- ✔ Communication error codes stored in the vehicle’s diagnostic system.
A True Plug-and-Play Solution
The biggest hurdle in replacing a modern ECM is the complex programming required to sync it with your specific vehicle. We eliminate that problem entirely. Upon purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash this module with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your vehicle’s factory settings and options. When the part arrives, it is ready for installation without any need for expensive dealership programming or specialized tools. This saves you time, money, and the hassle of towing your vehicle to a service center.
This Module is a Direct Replacement for the Following Part Numbers:
- 12653998
- 12633555
- 12655007
- 12644446
Guaranteed Fitment for a Wide Range of GM Vehicles:
This ECM is compatible with an extensive list of cars, trucks, and SUVs. Please verify your model and options below:
- ACADIA 13-16 Electronic Control Module; (behind fan shroud)
- ATS 13 Electronic Control Module; (LH engine compartment)
- ATS 14 Electronic Control Module; (LH engine compartment), ID 12653998
- ATS 15 Electronic Control Module; (LH engine compartment), 2.0L or 2.5L
- CAMARO 13-15 Electronic Control Module; 3.6L
- CAPRICE 14-16 Electronic Control Module; 3.6L
- CAPTIVA SPORT 13 Electronic Control Module; (LH engine compartment), ID 12653998
- CAPTIVA SPORT 14-15 Electronic Control Module; (LH engine compartment)
- CTS 14-15 Electronic Control Module; Sdn, 2.0L
- ENCLAVE 13-16 Electronic Control Module; (behind fan shroud)
- EQUINOX 13-16 Electronic Control Module; (LH engine compartment)
- IMPALA 14 Electronic Control Module; VIN 1 (4th digit, New Style)
- IMPALA 15-16 Electronic Control Module; VIN 1 (4th digit, New Style), 2.5L or 3.6L (LFX)
- IMPALA 17 Electronic Control Module
- LACROSSE 13-16 Electronic Control Module; (LH engine compartment)
- MALIBU 13 Electronic Control Module; (LH engine compartment), 2.0L, 2.4L (ID 12653998), or 2.5L
- MALIBU 14-15 Electronic Control Module; (LH engine compartment)
- MALIBU 16 Electronic Control Module; (LH engine compartment), VIN 1 (4th digit, Limited)
- ORLANDO 14 Electronic Control Module; (LH engine compartment)
- REGAL 13-15 Electronic Control Module; (LH engine compartment), 2.0L or 2.4L
- REGAL 16 Electronic Control Module; (LH engine compartment)
- SRX 13-16 Electronic Control Module; (LH engine compartment)
- TERRAIN 13-16 Electronic Control Module; (LH engine compartment)
- TRAVERSE 13-16 Electronic Control Module; (behind fan shroud)
- VERANO 13 Electronic Control Module; 2.0L
- VERANO 14-16 Electronic Control Module
- XTS 13 Electronic Control Module; (3.6L)
- XTS 14-16 Electronic Control Module; (3.6L), VIN 3 (8th digit, opt LFX)
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. This is the primary benefit of our service. We program the module to your vehicle’s specific VIN before shipping it to you. It will arrive ready to install, requiring no additional programming or flashing.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. You can typically find your VIN on your vehicle’s dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your insurance and registration documents.
Is this a new part?
This is a high-quality, used OEM part sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure it is fully functional before being programmed and shipped. This provides OEM reliability at a fraction of the cost of a new part from a dealership.
Is this part difficult to install?
For most vehicles listed, the ECM is located in an accessible area, often in the engine compartment or behind the fan shroud. Installation typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. While many DIY mechanics can perform the replacement, we always recommend consulting a service manual or a professional technician if you are unsure.
Will this fix my check engine light?
If the check engine light and other symptoms are being caused by a faulty ECM, then yes, this part will resolve the issue. However, it is essential to ensure the problem has been correctly diagnosed. A check engine light can be caused by many other failing components, such as sensors or wiring issues.