Restore Peak Performance to Your General Motors Vehicle
Is your Cadillac, Chevrolet, or GMC suffering from perplexing issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer responsible for managing your vehicle’s engine performance, fuel economy, and emissions. This replacement Engine Control Module, part number 12669318, is the definitive solution to get your vehicle running smoothly and reliably once again.
This isn’t just a part in a box. We provide a comprehensive service that eliminates the need for expensive dealership visits and complex programming tools. When you order, simply provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our expert technicians will then flash the module with the latest, most stable software updates directly from General Motors, ensuring it is perfectly matched to your vehicle’s specific configuration. This makes installation a straightforward process, often referred to as ‘plug-and-play’, although a security or key relearn procedure may be necessary depending on your specific model.
From the Diagnostic Bay
We had a 2015 Silverado 1500 come into the shop with a bizarre issue. The owner complained of intermittent stalling at stoplights and a transmission that seemed to shift erratically. There were no specific transmission codes, just a generic U-code for lost communication. After hours of chasing wires and checking grounds, we finally focused on the ECM. On the surface, it seemed fine, but under load, it would momentarily drop communication with the TCM (Transmission Control Module). We swapped in one of our pre-programmed ECMs, and the truck immediately ran perfectly. It was a textbook case of how a failing engine computer can create ghost problems elsewhere in the vehicle, making a reliable, correctly programmed replacement absolutely critical.
Is This the Right 2014-2016 CTS Engine Module for You?
A faulty ECM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, a failing engine computer is a likely culprit. This module is the correct component to resolve these problems and restore your vehicle’s factory-intended operation.
- ✔ Check Engine Light: The most common indicator, often with codes related to module communication, sensor circuits, or processor faults.
- ✔ Engine Stalling or Misfiring: Inconsistent fuel and spark control can lead to rough running, misfires, or stalling for no apparent reason.
- ✔ Poor Fuel Economy: An inefficiently running engine, managed by a faulty ECM, will almost certainly consume more fuel.
- ✔ No-Start Condition: The ECM controls the fuel pump and ignition coils. If it fails completely, the engine may crank but will not start.
- ✔ Transmission Shifting Problems: The ECM communicates directly with the transmission control module (TCM) to ensure smooth shifting. Faulty signals can cause harsh shifts or erratic gear changes.
- ✔ Failure to Pass Emissions Tests: Proper emissions control is a primary function of the ECM. A bad module will prevent the vehicle from passing state-mandated tests.
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for a wide range of popular GM cars, trucks, and SUVs. We’ve taken the guesswork out of the equation. By programming the unit to your VIN, we ensure it has the correct software for your engine, transmission, and factory options. This unit is compatible with multiple original part numbers, making it a versatile solution.
Replaces Part Numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318
Vehicle Fitment:
This 2014-2016 CTS Engine Module is also confirmed to fit the following vehicles. Please verify your original part number or consult your mechanic to ensure proper fitment.
- ATS 2014-2016
- CAMARO 2016 (6.2L)
- CANYON 2015-2016 (3.6L)
- COLORADO 2015-2016 (3.6L)
- CORVETTE 2014-2016
- CTS 2014-2016 (3.6L, 6.2L)
- ESCALADE & ESCALADE ESV 2015-2016
- SIERRA 1500 & SIERRA DENALI 1500 2014-2016
- SILVERADO 1500 PICKUP 2014-2016
- SUBURBAN 1500 2015-2016
- TAHOE 2015-2016
- XTS 2014-2016 (3.6L)
- YUKON & YUKON XL 1500 2015-2016
Frequently Asked Questions
Do I need to do any programming after I receive this ECM?
No. We flash the module with your vehicle’s specific VIN and the latest GM software before it ships. In most cases, this makes it ready for installation. However, some vehicles may require a simple security relearn procedure (often called a ‘key relearn’ or ‘anti-theft relearn’), which can typically be done without special tools. Instructions are widely available online for this procedure.
How do I provide my VIN number?
After you complete your purchase, you can send us a message with your 17-digit VIN. You can find your VIN on your vehicle’s dashboard (visible through the windshield on the driver’s side), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this a brand new part?
This is a high-quality, serviced original equipment (OE) part. Each unit undergoes a rigorous inspection and testing process to ensure it meets or exceeds factory specifications. We then load it with fresh, vehicle-specific software, providing a reliable and cost-effective alternative to a new dealership part.
What if I have an aftermarket performance device?
This module is programmed with standard factory software. It is not designed to work with aftermarket performance modifications that alter the engine’s computer settings. You should return your vehicle to its stock configuration before installing this module.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. However, it is crucial to ensure a proper diagnosis has been performed. The check engine light can be triggered by hundreds of potential issues, from a loose gas cap to a bad sensor. This module will only fix problems directly related to the computer itself.