Is Your Cadillac Experiencing Engine Problems?
If your 2014-2016 Cadillac XTS is suffering from erratic engine behavior, a persistent check engine light, or a no-start condition, a failing Engine Control Module (ECM) could be the culprit. The ECM is the central computer of your vehicle’s powertrain, responsible for managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it falters, the entire driving experience is compromised. This direct-fit Engine Control Module, part number 12672963, is the definitive solution to restore your vehicle’s performance, reliability, and efficiency.
From the Diagnostic Bay
We had a 2015 Cadillac CTS come in with a random misfire on cylinder 3 that just wouldn’t go away. The owner had already replaced the spark plug, ignition coil, and even the fuel injector. The misfire would disappear for a while and then come back, especially under load. After hours of chasing wires, we finally scoped the injector driver circuit directly at the ECM. We found the signal from the module was weak and inconsistent. A new, properly programmed ECM fixed the issue instantly. It’s a classic case of how a faulty module can mimic a mechanical or component failure, leading to wasted time and money on unnecessary parts.
Common Symptoms of a Failing ECM
A faulty engine computer can manifest in numerous ways. If you’re noticing any of the following issues, it’s time to consider an inspection of your ECM. Proper diagnosis is key, but these symptoms are strong indicators of a module-related problem.
- ✔ Persistent Check Engine Light (CEL) with codes related to module communication, sensor circuits, or processor faults.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel economy for no apparent reason.
- ✔ Intermittent or complete no-start conditions where the engine cranks but won’t fire.
- ✔ Rough idling or engine misfires that aren’t resolved by new plugs or coils.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Communication issues with diagnostic scan tools.
Why Choose Our 2014-2016 XTS ECM Replacement?
This isn’t just a part; it’s a complete, ready-to-install solution. The biggest hurdle in replacing a modern ECM is the complex programming required to sync it with your vehicle’s specific systems, including the anti-theft and ignition keys. We eliminate this expensive and time-consuming step. When you order from us, you get a high-quality module that is professionally programmed to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that once installed, the module will communicate flawlessly with the rest of your car’s electronics.
This 2014-2016 XTS ECM Replacement is loaded with the latest GM-certified software updates available for your vehicle. These updates often correct factory-discovered issues, improving engine performance, fuel efficiency, and overall drivability beyond the original specifications. Simply provide your VIN during checkout, and we handle the rest. The module arrives at your door, ready for a straightforward physical installation.
Broad GM Compatibility
While this is a perfect fit for the 2014-2016 Cadillac XTS, this versatile module (part number 12672963) is also the correct component for a wide array of other GM cars and trucks. Please verify your original part number or consult the fitment list below. This module is a direct replacement for the following part numbers:
Compatible Part Numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12669318.
Fitment Includes: Cadillac ATS, CTS, Escalade; Chevrolet Silverado 1500, Corvette, Camaro, Colorado, Suburban, Tahoe; GMC Sierra 1500, Canyon, Yukon, and more. Always confirm fitment for your specific year, model, and engine option.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. The main benefit of our service is that we program the module for you before it ships. Simply provide us with your vehicle’s 17-digit VIN when you place your order, and we will flash the unit with the correct software and calibration files for your specific car. This saves you a trip to the dealership and additional programming fees.
What happens after I install the module?
In most cases, the installation is plug-and-play. However, on many GM vehicles, you may need to perform a simple security relearn procedure. This process syncs the new ECM with your vehicle’s anti-theft system and can typically be done without special tools. It often involves a sequence of turning the key in the ignition. We can provide general instructions for this procedure.
Where do I find my vehicle’s VIN?
Your Vehicle Identification Number (VIN) can be found in several places: on a metal plate on the driver’s side dashboard visible through the windshield, on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
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. It is crucial to have your vehicle properly diagnosed to confirm the ECM is the root cause before ordering. This part will not fix problems related to other faulty sensors or mechanical issues.
Is this a genuine GM part?
This is a genuine, OEM-quality part that meets or exceeds all original equipment specifications. It is programmed with official GM software to ensure perfect operation and compatibility with your vehicle.