Restore Peak Performance to Your Cadillac
Is your 2014-2016 Cadillac CTS running rough, stalling unexpectedly, or displaying a persistent Check Engine Light? These are classic signs that the brain of your engine, the Engine Control Module (ECM), might be failing. As a technician with over two decades of experience under the hood, I’ve seen how a faulty ECM can cause a cascade of frustrating issues, from poor fuel mileage to a no-start condition. This isn’t just an inconvenience; it’s a critical component failure that compromises your vehicle’s reliability and performance.
We offer a dependable and straightforward solution: a replacement Engine Control Module, part number 12672963, that arrives at your door fully programmed for your specific vehicle. Simply provide us with your VIN during checkout, and our experts will flash the module with the latest, most stable software updates directly from GM. This vital step ensures perfect communication between the ECM and all other systems in your vehicle, eliminating the need for an expensive trip to the dealership for programming.
Case Study: A Tricky Diagnosis
I remember a 2015 CTS that came into my shop with a baffling intermittent no-start condition. The owner had already replaced the battery and starter to no avail. The scan tool showed a U0100 code—Lost Communication with ECM. After checking the wiring harness and power/ground circuits to the module, everything seemed fine. On a hunch, I gently tapped on the original ECM, and the engine immediately stalled. This confirmed my suspicion: an internal failure within the module. We installed one of our pre-programmed units, and the car fired up instantly and has run flawlessly ever since. This is a common failure mode I’ve seen dozens of times.
Is Your Cadillac Showing These Symptoms?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, this module is the likely solution.
- âś” Unexplained Check Engine Light (CEL) illumination.
- âś” Stalling, hesitation, or rough idling.
- âś” The engine cranks but refuses to start.
- âś” Noticeable decrease in fuel economy.
- âś” Harsh or erratic automatic transmission shifting.
- âś” Communication error codes, such as P0601, P0606, or U0100.
- âś” Failure to pass an emissions inspection.
A Straightforward Guide to Installation
Installing your new 2014-2016 CTS Engine Control Module is a manageable job for a DIYer with basic tools. This pre-programmed unit saves you the most difficult step.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the Module: On the Cadillac CTS, the ECM is typically found in the engine compartment. Consult your vehicle’s service manual for the exact location.
- Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Do not force them.
- Remove the Old ECM: Unbolt the mounting hardware holding the old module in place and remove it from the vehicle.
- Install the New ECM: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click securely in place. Reconnect the negative battery terminal.
- Final Steps: Some vehicles may require a security or crankshaft position sensor relearn procedure after installation, which can often be done with a capable bi-directional scan tool or by following a specific vehicle procedure.
Verified Vehicle Compatibility
This module, identified by part number 12672963, is a direct-fit replacement for a wide range of GM vehicles. While this listing is focused on the 2014-2016 CTS Engine Control Module, it is also compatible with the following models and part numbers. Please verify your original part number matches one of these for guaranteed compatibility: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12669318.
Chevrolet: Camaro (2016), Colorado (2015-16), Corvette (2014-16), Silverado 1500 (2014-16), Suburban (2015-16), Tahoe (2015-16)
GMC: Canyon (2015-16), Sierra 1500 / Denali 1500 (2014-16), Yukon / XL 1500 (2015-16)
Note: Specific engine and option codes may apply. Verifying your VIN is the best way to ensure a perfect match.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before we ship the module. We use your vehicle’s VIN to load the correct GM-certified software and updates, making it ready for installation right out of the box.
Is this a simple plug-and-play part?
For most vehicles, yes. Once programmed to your VIN, it’s a direct physical replacement. However, some models may require a simple security relearn or crankshaft position relearn procedure, which can be done with a common scan tool or by following a specific key cycle sequence.
Will this fix my Check Engine Light?
If the Check Engine Light is caused by a faulty ECM (with codes like P0601, P0606, etc.), then yes, this module will resolve the issue. It’s crucial to properly diagnose the problem first, as the light can be triggered by many other components.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly for your specific car.
Where is the ECM located on my 2015 Cadillac CTS?
On the 2014-2016 Cadillac CTS, the Engine Control Module is generally located in the engine bay. For models with the 3.6L engine, you’ll typically find it on the driver’s side. Always confirm the location with a service manual for your specific vehicle configuration.