Restore Peak Performance to Your GM Vehicle
Is your truck or car plagued by frustrating issues like a persistent check engine light, erratic stalling, poor fuel mileage, or a complete no-start condition? These are often the tell-tale signs of a failing Engine Control Module (ECM), the central computer that manages your vehicle’s engine. When it falters, the entire system suffers. This isn’t just an inconvenience; it can be a serious reliability issue. As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can mimic a dozen other problems, leading to expensive and incorrect repairs. This replacement Engine Control Module, part number 12673195, is the direct, reliable solution to get your vehicle running like new again.
We take the guesswork and high cost out of the equation. Unlike a generic part that requires a trip to the dealership for expensive programming, this module arrives at your door ready for installation. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our experts will program the unit with the latest, most stable software updates directly from GM. This ensures perfect communication with your vehicle’s specific systems and options, restoring the precise performance and efficiency you expect from your GM car or truck. This is the same process used at the dealership, but without the hassle or inflated labor charges.
From the Diagnostic Bay
I remember a 2016 Silverado 1500 that came into the shop with a ghost of a problem. The owner complained of random stalling at stoplights and an occasional hard start. There were no consistent trouble codes, just a history of a P0606 (ECM Processor Fault) that would appear and disappear. We checked everything—fuel pressure, sensors, wiring harnesses—and found nothing conclusive. After hours of diagnostics, we decided to monitor the ECM’s internal data stream. We noticed the processor would momentarily drop out under certain load conditions. It was a classic case of an internal ECM failure that was nearly impossible to catch without swapping the part. We installed a VIN-programmed module just like this one, and the truck ran flawlessly. It’s a reminder that sometimes, the brain itself is the source of the problem.
Common Signs of a Failing Engine Computer
If you’re experiencing any of the following, a failing ECM could be the culprit. Confirming your diagnosis is key, and these symptoms are strong indicators for a wide range of GM vehicles, not just the 2015-2016 Canyon ECM.
- ✔ Check Engine Light is on with codes like P0601, P0606, or other internal processor faults.
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ The engine stalls, stumbles, or misfires intermittently.
- ✔ Automatic transmission shifts harshly or at the wrong times.
- ✔ Loss of communication with the scan tool (U-codes).
- ✔ Apparent failure of multiple sensors at once.
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a DIY enthusiast. Since we handle the programming, you won’t need any specialized computer equipment. Just follow these general steps. Note: A security relearn procedure will be necessary after installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
- Locate the ECM: On the 2015-2016 Canyon/Colorado, the ECM is typically found on the passenger side (RH) of the firewall in the engine bay. On Silverado/Sierra trucks and SUVs, it’s usually on the driver’s side (LH) front of the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be released. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed ECM in place and securely fasten the bolts. Reconnect the electrical connectors, ensuring they click firmly into place.
- Reconnect the Battery: Re-attach the negative battery terminal and tighten it.
- Perform Security Relearn: You will need to perform a simple key relearn procedure so the vehicle recognizes the new ECM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. Search for the specific procedure for your model year.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12673195 and is compatible with several other part numbers including 12692067, 12676230, 12656993, and more. It fits a wide array of GM vehicles. Please verify your vehicle is on this list:
- ATS (2014-2016)
- CAMARO (2016)
- CANYON (2015-2016)
- COLORADO (2015-2016)
- CORVETTE (2014-2016)
- CTS (2014-2016)
- ESCALADE / ESV (2015-2016)
- SIERRA 1500 / DENALI 1500 (2014-2016)
- SILVERADO 1500 (2014-2016)
- SUBURBAN 1500 (2015-2016)
- TAHOE (2015-2016)
- XTS (2014-2016)
- YUKON / YUKON XL 1500 (2015-2016)
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before shipping it to you. It arrives ready for installation and a security relearn procedure.
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 critical for correct programming.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original ECM (e.g., codes P0601, P0606), then this replacement module will solve the problem. It will not fix issues caused by other faulty sensors or mechanical problems.
Is the security relearn procedure difficult?
Not at all. For most GM vehicles, it’s a simple process you can do yourself with just the ignition key. It typically takes about 30 minutes and requires no special tools. We recommend searching online for the exact steps for your model.
How do I know if this part number is correct for my vehicle?
This module replaces several part numbers. The best way to ensure compatibility is to match your vehicle model and year to our fitment list. If you’re unsure, feel free to contact us with your VIN, and we can verify it for you.