Restore Peak Performance to Your GM Vehicle
Is your vehicle suffering from frustrating issues like a persistent Check Engine Light, poor fuel economy, stalling, or a complete no-start condition? As a technician with over two decades of diagnostic experience, I’ve seen these symptoms countless times, and they often point directly to a failing Engine Control Module (ECM). The ECM is the brain of your engine, and when it falters, the entire system is compromised. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability.
We offer a dependable and straightforward solution. This is a genuine GM replacement ECM, part number 12667002, that arrives at your doorstep fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We install the latest GM-certified software updates, ensuring optimal performance, fuel efficiency, and emissions control right out of the box. You get a part that is ready for installation, saving you from a costly trip to the dealership for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2017 Chevy Impala with a complaint that stumped two other shops: it would randomly fail to start, but only after being driven for about 30 minutes. There were no consistent trouble codes, just a ghost in the machine. After verifying the battery and starter were solid, I focused on the ECM. On the bench, I noticed that heat was the trigger. As the engine bay warmed up, a hairline fracture on the ECM’s circuit board would expand, breaking a critical connection. A replacement 2017 Verano ECM (the same unit used in the Impala) programmed to the VIN solved the problem permanently. It’s a reminder that intermittent electrical issues are often module-related.
Is Your Vehicle Showing These Symptoms?
A faulty ECM can manifest in various ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention. Replacing your failing module can resolve these common problems:
- ✔ Unexplained Check Engine Light illumination
- ✔ Engine stalling, stuttering, or misfiring
- ✔ Complete no-start or hard-starting conditions
- ✔ Noticeable decrease in fuel mileage
- ✔ Poor or erratic automatic transmission shifting
- ✔ Communication error codes, such as U0100
- ✔ Internal module failure codes like P0601 or P0606
Your Plug-and-Play 2017 Verano ECM Solution
Forget about expensive dealership programming fees or the hassle of coordinating with a local shop. Our process is designed for both seasoned mechanics and DIY enthusiasts. Simply provide us with your vehicle’s VIN during checkout, and our experts will handle the complex programming. The module you receive will be a direct-fit, plug-and-play replacement, loaded with the most current software from General Motors to ensure your vehicle runs exactly as it should.
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for most DIYers. Follow these general steps to get your vehicle back on the road. Note: The exact location may vary by model (e.g., behind the fan shroud or in the LH engine compartment).
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: Find the existing Engine Control Module on your vehicle. Common locations for the models listed are the left-hand (driver’s side) of the engine compartment or behind the radiator fan shroud.
- Disconnect Connectors: Carefully unlatch and remove the electrical wiring harnesses connected to the old ECM. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harnesses into the new ECM until they click into place. Reconnect the negative battery terminal.
- Final Check: Start the vehicle. The Check Engine Light may stay on for a short period as the vehicle’s systems perform a self-check, which is normal. A short drive cycle is often required.
Verified Vehicle Compatibility
This module is a guaranteed fit for a wide range of GM vehicles. It is a direct replacement for part numbers 12667002, 12666070, and 12667189. Please verify your model and options below:
- 2017 Buick Enclave: (Located behind fan shroud)
- 2017 Buick LaCrosse: (3.6L)
- 2017 Buick Regal: (Located in LH engine compartment)
- 2017 Buick Verano
- 2017 Cadillac XTS: (3.6L, VIN 3, 8th digit, opt LFX)
- 2017 Chevrolet Caprice: (3.6L)
- 2017 Chevrolet Equinox: (Located in LH engine compartment)
- 2017-2019 Chevrolet Impala
- 2017 Chevrolet Traverse: (Located behind fan shroud)
- 2017 GMC Acadia: (VIN J, 11th digit, Limited), (Located behind fan shroud)
- 2017 GMC Terrain: (Located in LH engine compartment)
Frequently Asked Questions
How do I provide my VIN?
After placing your order, you will receive an email prompting you for your vehicle’s 17-digit VIN. You can also add it to the notes section during checkout. We cannot program or ship the module without it.
Is any additional programming needed after installation?
No. This ECM comes fully programmed with the latest GM software matched to your VIN. In most cases, it is a simple plug-and-play installation. Some vehicles may require a security relearn procedure, which can typically be done without special tools.
Will this fix my specific problem?
This module will correct any issues directly caused by a faulty ECM. While the symptoms listed are common indicators, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the point of failure before ordering.
What if I have a different part number?
This ECM is a direct replacement for part numbers 12667002, 12666070, and 12667189. If your original part number matches one of these, this module will work for your vehicle.
Is there a core charge?
There is no core charge for this part. You are not required to send your old, faulty module back to us.