Is your Cadillac, Chevrolet, or GMC vehicle suffering from erratic engine behavior, a persistent Check Engine Light, or a frustrating no-start condition? The Engine Control Module (ECM), the master computer of your vehicle’s powertrain, is often the source of these complex issues. This genuine GM Engine Control Module, part number 12672963, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency. We take the guesswork and hassle out of the repair by programming the module specifically to your vehicle’s VIN before it ships, ensuring a seamless installation process.
Common Symptoms of a Failing GM ECM
A faulty ECM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, it’s time to consider your engine computer as the potential culprit. This 2014-2016 CTS Engine Control Module is designed to resolve these very problems.
- ✔ Persistent and unexplained Check Engine Light (CEL) illumination.
- ✔ Noticeable decrease in fuel economy.
- ✔ Engine stalling, stumbling, or misfiring, especially under load.
- ✔ Rough or inconsistent idling.
- ✔ Difficulty starting the engine or a complete no-start situation.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Failure to pass state emissions testing.
From the Diagnostic Bay
We had a 2015 Silverado 1500 come into the shop with a list of complaints that had other mechanics stumped. The owner reported random stalling, poor acceleration, and a transmission that seemed to have a mind of its own. He had already replaced the throttle body and a few sensors with no luck. After hooking up our professional diagnostic tool, we found multiple communication error codes pointing to the ECM. Instead of a costly and time-consuming diagnostic rabbit hole, we recommended a VIN-programmed replacement module. Once the new ECM arrived and was installed, it was like driving a different truck. All the issues vanished instantly. This highlights how a single failing computer can cause a cascade of seemingly unrelated problems, and why a pre-programmed module is the most efficient fix.
The Plug-and-Play Advantage: VIN Programming Included
Why choose our module? We eliminate the most complicated step of the repair process. Ordinarily, replacing an ECM requires towing your vehicle to a dealership for expensive programming with specialized equipment. We handle that for you. Simply provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This ensures that the ECM is perfectly matched to your vehicle’s specific configuration, including its engine, transmission, and factory options.
Broad Compatibility Across the GM Lineup
While this is a key component for the 2014-2016 CTS Engine Control Module, its versatile architecture allows it to be the brain for a wide range of popular GM cars, trucks, and SUVs. This module is a direct replacement for numerous part numbers, including 12692067, 12676230, 12656993, 12662034, and more. It’s the correct fit for models such as:
- Chevrolet Silverado 1500 & Corvette & Camaro
- GMC Sierra 1500 & Canyon
- Cadillac ATS, XTS, & Escalade
- Chevrolet Tahoe, Suburban, & Colorado
- GMC Yukon & Yukon XL
By ordering this pre-programmed module, you are getting a component that is ready for installation right out of the box, saving you significant time, money, and frustration. Restore your vehicle’s factory performance and peace of mind today.
Frequently Asked Questions
Do I need to have this module programmed?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This saves you a trip to the dealership and expensive programming fees.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number. We cannot ship the module until we have this information to program it correctly.
Is any additional procedure needed after installation?
In many cases, the module is plug-and-play. However, some GM vehicles may require a simple security relearn procedure (also known as a CASE relearn or anti-theft relearn) which can typically be done without special tools. Instructions are widely available online for this process.
How can I be sure this part will fit my vehicle?
This module replaces a wide range of original part numbers. The best way to ensure compatibility is by providing us with your VIN. Our programming process matches the module’s software to your exact vehicle build, guaranteeing proper function.
What does an ECM actually do?
The Engine Control Module is your vehicle’s main computer. It controls critical functions like fuel injection timing, spark timing, transmission shifting, and emissions systems to ensure optimal performance, fuel economy, and low emissions.