Restore Peak Performance to Your GM Vehicle
Is your Cadillac ATS, Chevy Silverado, or GMC Sierra suffering from baffling electrical issues? A faulty Engine Control Module (ECM) is often the culprit behind problems like a persistent check engine light, unexplained stalling, poor fuel mileage, and even a no-start condition. This genuine GM Engine Control Module, part number 12673195, is the definitive solution to restore your vehicle’s factory performance and reliability. As the central computer of your vehicle, the ECM is responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it fails, the symptoms can be widespread and frustrating. This replacement module eliminates the guesswork and provides a direct-fit, reliable fix.
The Critical Advantage: VIN-Specific Programming
Don’t settle for a generic, off-the-shelf module that requires expensive trips to the dealership for programming. We take care of the most crucial step for you. Before this ECM ships, our technicians will flash it with the latest, most stable software updates directly from General Motors, using the unique Vehicle Identification Number (VIN) from your car or truck. This ensures perfect communication between the module and all other systems in your vehicle, just as the factory intended. This VIN-programming service makes installation significantly easier, saving you time, money, and the headache of dealing with incompatible software.
From the Diagnostic Bay
We had a 2015 Sierra 1500 in the shop that was driving its owner crazy. It would run perfectly for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. There were no consistent trouble codes, just a vague U0100 ‘Lost Communication with ECM’ code that would pop up intermittently. We checked wiring harnesses, grounds, and power feeds for hours. Finally, we monitored the ECM’s internal temperature and saw it was spiking right before a stall. The module was failing when it got hot. We replaced it with a VIN-programmed 2014-2016 ATS Engine Control Module (the same core unit as this one), performed the quick security relearn, and the truck has been running flawlessly ever since. It’s a classic example of how a failing computer can mimic a dozen other problems.
Common Symptoms of a Failing GM ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Error codes related to module communication (U-codes) or processor faults (P06xx codes).
- ✔ Intermittent or complete no-start condition, where the engine cranks but won’t fire.
- ✔ Noticeable decrease in fuel economy and engine performance.
- ✔ Rough idling, engine stumbling, or hesitation during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions inspections.
Guaranteed Compatibility and Fitment
This ECM is a direct replacement for a wide array of popular GM vehicles. It is fully compatible with multiple original part numbers, ensuring a perfect match for your application. Please verify that your vehicle and original part number are listed below.
Replaces Part Numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318
Fits Models Including:
- 2014-2016 Cadillac ATS (3.6L)
- 2014-2016 Cadillac CTS (3.6L, 6.2L)
- 2014-2016 Cadillac XTS (3.6L)
- 2015-2016 Cadillac Escalade / ESV
- 2014-2016 Chevrolet Corvette
- 2016 Chevrolet Camaro (6.2L)
- 2014-2016 Chevrolet Silverado 1500
- 2015-2016 Chevrolet Suburban 1500 / Tahoe
- 2015-2016 Chevrolet Colorado (3.6L)
- 2014-2016 GMC Sierra 1500 / Sierra Denali 1500
- 2015-2016 GMC Yukon / Yukon XL 1500
- 2015-2016 GMC Canyon (3.6L)
Note: Please provide your VIN upon checkout to ensure we can program the module correctly for your specific vehicle options before shipment.
Frequently Asked Questions
Is this ECM ready to install right out of the box?
Yes, for the most part. We program the module to your vehicle’s VIN before shipping, which handles 99% of the setup. However, on many GM vehicles, you may need to perform a simple ‘Security Relearn’ or ‘Key Relearn’ procedure after installation. This can typically be done in your driveway in about 30 minutes without any special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, you can send us a message with your 17-digit VIN. We cannot ship the part until we have this information, as the programming is essential for it to function in your vehicle.
What if my original part number isn’t 12673195?
This module is a superseded part that replaces several earlier part numbers. Please check the compatible part number list in the description. If your original module’s number is on that list, this part is the correct replacement for you.
Will this part fix my vehicle’s specific problem?
This ECM will correct any issue directly caused by a faulty engine computer. However, it is crucial that your vehicle is properly diagnosed by a qualified technician. This part will not fix problems related to bad sensors, wiring, or other mechanical failures. Confirming the ECM is the point of failure is key to a successful repair.
Do I need to send my old ECM back?
No, there is no core charge or requirement to return your original module. You can keep it or dispose of it as you see fit.