Restore Peak Performance to Your GM Truck or SUV
Is your 2014-2016 Silverado, Sierra, or other compatible GM vehicle acting up? If you’re dealing with a persistent check engine light, rough idling, stalling, or a frustrating no-start condition, a failing Engine Control Module (ECM) is often the culprit. 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 wasted time and money on unnecessary parts. This isn’t just a component; it’s the brain of your engine, and when it falters, your entire vehicle suffers.
We take the guesswork and hassle out of the repair. This genuine OEM-spec Engine Control Module, part number 12672963, is the definitive solution. The biggest hurdle with ECM replacement is typically the expensive programming required at a dealership. We eliminate that step entirely. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module with the latest, most stable software updates directly from GM. This ensures perfect communication with your truck’s specific systems, restoring the smooth operation and fuel efficiency you expect. This is the most reliable way to fix your vehicle correctly the first time.
Is Your Silverado Showing These Signs of ECM Failure?
- ✔ Persistent Check Engine Light (CEL) with codes like P0601, P0606, or U0100.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Noticeable decrease in fuel economy.
- ✔ The engine cranks but refuses to start.
- ✔ Rough or erratic idling and poor acceleration.
- ✔ Transmission shifting issues or harsh gear changes.
- ✔ Communication errors with diagnostic scan tools.
A Technician’s Notebook: The Intermittent Gremlin
A customer brought in a 2015 Silverado 1500 that would randomly stall at red lights, but with no consistent codes. They had already replaced the throttle body and a camshaft position sensor with no luck. After checking all the wiring for chafing (a common issue on these trucks), we hooked up a scope to the main processor outputs on the ECM. We found that the 5-volt reference signal would intermittently drop out, causing the shutdown. It wasn’t a sensor or a wire; the ECM itself was failing internally under specific thermal conditions. A new, properly programmed 2014-2016 Silverado ECM solved the problem permanently. This highlights why pinpoint diagnostics are key and why a quality module is a lasting fix, not just another guess.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- ✔ Locate the ECM: On most Silverado and Sierra trucks, the ECM is located in the front of the engine bay on the driver’s side, near the air filter box.
- ✔ Disconnect Connectors: Carefully release the locking tabs and disconnect all electrical harness connectors from the old ECM. Do not force them; they have release mechanisms.
- ✔ Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will need it for the new module.
- ✔ Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the original bolts.
- ✔ Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Security Relearn: Your vehicle may require a simple key-cycle security relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes (do not start), then turn it ‘OFF’ for 10 seconds. Repeat this two more times. On the fourth attempt, the vehicle should start and run normally.
Verified Vehicle Compatibility
This module is a direct replacement for part number 12672963 and is also compatible with part numbers 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, and 12669318. It is guaranteed to fit the following models:
ATS (2014-2016), CTS (2014-2016), Escalade/ESV (2015-2016), XTS (2014-2016)
Chevrolet:
Camaro (2016), Colorado (2015-2016), Corvette (2014-2016), Silverado 1500 (2014-2016), Suburban 1500 (2015-2016), Tahoe (2015-2016)
GMC:
Canyon (2015-2016), Sierra 1500 / Denali 1500 (2014-2016), Yukon / Yukon XL 1500 (2015-2016)
Please verify your specific part number or provide your VIN to ensure a perfect match. A properly installed 2014-2016 Silverado ECM is critical for vehicle function.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming or flashing myself?
No. We handle all the programming before shipping. We use your VIN to load the latest GM-certified software onto the module, so it’s ready for installation right out of the box.
What is the ‘Security Relearn Procedure’?
It’s a simple process that syncs the new ECM with your vehicle’s anti-theft system. It typically involves cycling the ignition key and can be done in your driveway without any special tools. Instructions are included above.
Where is the ECM located on my 2015 Silverado 1500?
On the 2014-2016 Silverado and Sierra 1500, the ECM is found in the engine compartment on the driver’s side, attached to a bracket near the air intake box.
How do I provide my VIN number?
You can add your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout. If you forget, we will contact you via email to get the required information before we program and ship your part.
Will this fix my check engine light?
If the check engine light is on due to a faulty ECM (common codes P0601, P0606), then yes, this part will resolve the issue once installed and any other vehicle faults are addressed. We recommend clearing all codes after installation.