Restore Peak Performance to Your Vehicle’s Engine
Is your Cadillac XTS, Silverado, Sierra, or another compatible GM vehicle suffering from frustrating and unpredictable engine problems? Issues like a persistent check engine light, rough idling, stalling, poor fuel economy, or a complete no-start condition often point directly to a failing Engine Control Module (ECM). The ECM is the brain of your engine, responsible for managing everything from fuel injection and ignition timing to emissions control. When it fails, the entire system’s performance and reliability are compromised.
This genuine GM Engine Control Module, part number 12672537, is the definitive solution to restore your vehicle’s factory performance and dependability. We take the guesswork and hassle out of the replacement process. Before this module ships, our experts will program it with the latest official GM software updates, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This ensures seamless integration and optimal function right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing ECM
If you’re experiencing any of the following issues, a faulty engine computer could be the culprit. Replacing it with a properly programmed unit is often the most effective and permanent fix.
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Transmission shifting problems or harsh shifts.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Misfire codes (e.g., P0300) even after replacing plugs and coils.
The Simple, Professional Solution for Your 2014-2016 XTS Engine Control Module
Don’t let a faulty computer keep your vehicle off the road. Our process is designed for both professional technicians and savvy DIYers. Simply purchase the module and provide us with your vehicle’s VIN during checkout or via email. We handle the complex programming, ensuring the module you receive is a true plug-and-play component. While most vehicles will start and run immediately, some may require a simple security relearn procedure (often called a CASE relearn or anti-theft relearn), which can typically be performed without specialized tools. This procedure syncs the new ECM with your vehicle’s existing anti-theft system.
This module is a direct replacement for a wide range of popular GM trucks, SUVs, and cars, making it a versatile and reliable choice. It is compatible with multiple original part numbers, including: 12692067, 12676230, 12656993, 12662034, 12672537, 12673195, 12663391, 12672963, and 12669318. Please verify the part number on your original module or consult our extensive fitment list to confirm compatibility.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN when you order, and the module will arrive with the latest GM software specific to your car or truck, ready for installation.
What is a security relearn procedure?
A security relearn, or anti-theft relearn, is a simple process that syncs the new ECM to your vehicle’s security system. For most GM vehicles, this involves a sequence of turning the key in the ignition for set periods. Instructions are widely available online and it typically does not require any special tools.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, then yes, this part will resolve the issue. It’s crucial to have a proper diagnosis to confirm the ECM is the root cause, as other failing sensors or components can also trigger the light.
Where is the ECM located on my vehicle?
The location varies by model. On many GM trucks like the Silverado and Sierra, it’s in the LH front of the engine compartment. On vehicles like the Corvette, it might be under the dash on the RH cowl. For the Cadillac XTS, it is typically in the engine compartment. Always consult a repair manual for your specific vehicle for the exact location.
How do I provide my VIN?
You can add your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout or reply to your order confirmation email with the information. We cannot program and ship the module without it.
Is this part compatible with part number 12656993?
Yes, this module is a direct, compatible replacement for several part numbers, including 12656993. We program it to function identically to the original part in your vehicle.