Restore Peak Performance to Your GM Vehicle
Is your Cadillac, Silverado, or Corvette suffering from frustrating issues like a persistent check engine light, poor fuel economy, stalling, or a complete no-start condition? The Engine Control Module (ECM) is the brain of your vehicle’s engine, and when it fails, it can cause a wide range of problems that are often difficult to diagnose. As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can sideline an otherwise perfectly good vehicle. This isn’t just a part; it’s the central command center for your engine’s performance and efficiency.
This is your direct, reliable solution. We are offering a genuine GM Engine Control Module, part number 12669318, that comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest, most stable software updates directly from GM. This critical step ensures seamless communication with your vehicle’s other modules and often corrects underlying drivability issues that were present even before the original module failed. You get a component that is truly plug-and-play, eliminating the need for expensive dealership programming or specialized scan tools.
Case Study: A Tricky Diagnosis
I remember a 2015 Sierra 1500 that came into my bay with a bizarre set of symptoms. The owner complained of intermittent stalling at red lights and a transmission that seemed to shift harshly out of nowhere. No specific transmission codes were stored, but we had a generic U0100 (Lost Communication With ECM/PCM) and a history code for P0601 (Internal Control Module Memory Check Sum Error). After verifying all power and ground circuits to the ECM were solid, we knew the processor was failing internally. Instead of a costly trip to the dealer for a new module and programming, the owner ordered a pre-programmed unit like this one. The swap took less than 30 minutes, and the truck ran perfectly immediately. The pre-flashed software resolved the communication dropouts, restoring smooth shifting and reliable performance.
Is Your Vehicle Showing These Symptoms of ECM Failure?
A failing engine computer can manifest in many ways. If you’re experiencing any of the following, a faulty ECM could be the culprit. This is especially true if you see diagnostic trouble codes (DTCs) pointing to internal processor failure.
- ✔ Check Engine Light is illuminated with codes like P0601, P0606, or other internal processor faults.
- ✔ Vehicle refuses to start or has trouble turning over.
- ✔ Noticeable decrease in fuel mileage.
- ✔ Engine stalls, stumbles, or misfires intermittently.
- ✔ Automatic transmission shifts erratically or harshly.
- ✔ Failure to pass an emissions or smog test.
- ✔ Loss of communication with the module when using a scan tool.
A Straightforward Guide to Installation
One of the biggest benefits of this pre-programmed 2014-2016 ATS ECM is the simple installation. While specific locations vary by model (e.g., LH engine compartment on a Silverado, RH cowl on a Corvette), the process is generally the same. No programming is required on your end!
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the ECM: Find the existing Engine Control Module on your vehicle. It’s a metal box with large electrical connectors. Refer to the fitment list for common locations.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab or lever that needs to be released. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Reconnect the electrical connectors, ensuring they click securely into position.
- Final Steps: Reconnect the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. In most cases, you can simply start the engine and go.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of General Motors cars and trucks. Please ensure your vehicle is on this list. After purchase, you must provide your VIN so we can program the module specifically for your vehicle’s configuration.
CAMARO: 2016 (6.2L)
CANYON / COLORADO: 2015-2016 (3.6L)
CORVETTE: 2014-2016
CTS: 2014-2016 (3.6L, 6.2L)
ESCALADE / ESCALADE ESV: 2015-2016
SIERRA 1500 / SILVERADO 1500: 2014-2016
SIERRA DENALI 1500: 2014-2016
SUBURBAN 1500: 2015-2016
TAHOE: 2015-2016
XTS: 2014-2016 (3.6L)
Compatible Part Numbers: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, 12669318
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming or flashing myself?
No. This is the core benefit of our service. We program the module to your specific VIN with the latest GM software before it ships. It arrives ready for installation.
Where do I find my VIN and how do I provide it?
Your 17-digit VIN is located on the driver’s side of the dashboard (visible through the windshield), on your vehicle’s registration, or on the driver’s door jamb sticker. After you complete your purchase, you will need to send us a message with your VIN.
Will this fix my specific problem or check engine light?
This module will correct any issues directly caused by a faulty ECM, including common internal failure codes. If your vehicle’s problem is due to a bad sensor or wiring issue, this will not fix it. Proper diagnosis is always recommended.
What if my original part number isn’t on the compatibility list?
The part numbers listed are the most common ones this module replaces. If your number is different, please contact us with your VIN. We can verify compatibility for you, as GM often supersedes part numbers.
Is any other relearn procedure required after installation?
In some cases, a Case/Crankshaft Variation Relearn may be needed to clear a P0315 code, which can be done with many professional-grade scan tools. However, the vehicle will run and drive without it. No other security or key programming is needed.