End Frustrating Engine Problems with a Reliable, Programmed ECM
As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Engine Control Module (ECM) can turn a reliable vehicle into a source of constant headaches. If your 2017 Buick Regal is suffering from erratic behavior like stalling, poor fuel mileage, or a persistent Check Engine Light, the root cause is very likely its electronic brain. This isn’t just an inconvenience; it affects your car’s performance, safety, and emissions. Stop throwing money at parts that don’t solve the problem. This is the direct, effective solution you’ve been looking for.
We offer a genuine GM Engine Control Module, part number 12667189, that arrives at your doorstep fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This eliminates the most expensive and complicated step of the repair: dealership programming. We load the latest GM-certified software updates, ensuring your engine operates with optimal efficiency and performance, just as it was designed to. This is the key to a lasting repair, not a temporary patch.
Signs Your Engine Computer is Failing
A faulty ECM can manifest in numerous ways, often mimicking other sensor failures. In my shop, I always check for these classic symptoms before condemning a module. If you’re experiencing several of these, you’ve likely found your culprit.
- ✔ Check Engine Light (CEL) is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained stalling or rough, inconsistent idling.
- ✔ A noticeable drop in fuel economy.
- ✔ The transmission shifts harshly or at the wrong times.
- ✔ Communication errors with diagnostic scan tools (U-codes).
- ✔ Intermittent issues that seem to have no pattern or cause.
Case Study: A Tricky Diagnosis
A customer brought in a 2017 Chevy Equinox (which uses this same ECM) with an intermittent no-start condition that two other shops couldn’t solve. It would work perfectly for days, then refuse to start. There were no hard fault codes, only a few stored communication errors. After checking all the wiring and grounds, we monitored the ECM’s internal voltage during startup. We discovered the processor was intermittently failing under the initial electrical load. We installed one of our pre-programmed modules, and the vehicle has been starting reliably ever since. This is a classic example of how a failing 2017 Regal ECM or its equivalent can create phantom problems that are nearly impossible to trace without replacing the unit.
Your Plug-and-Play Path to a Smooth-Running Engine
Replacing the 2017 Regal ECM is a straightforward job that most DIY enthusiasts can handle in their own driveway. Our pre-programming service makes it possible, saving you a trip to the dealer and hundreds in fees. Just follow these general steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all capacitors to discharge.
- Locate the ECM: On the 2017 Regal, the ECM is typically found in the left-hand (driver’s side) of the engine compartment. It’s a metal box with several large electrical connectors.
- Disconnect and Remove: Carefully unclip and remove the electrical harnesses. Be gentle with the locking tabs. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Securely reconnect the electrical harnesses, ensuring they click into place.
- Reconnect the Battery: Reattach the negative battery terminal and tighten it securely.
- Perform Security Relearn: Most GM vehicles require a simple key-cycle procedure to sync the new ECM with the anti-theft system. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. Consult your owner’s manual for the specific procedure for your vehicle.
Will This Fit My Vehicle?
This module is a direct-fit replacement for several GM models and part numbers. Please verify your vehicle is on this list for guaranteed compatibility. This ECM is a correct replacement for part numbers 12667002, 12666070, and 12667189.
- ✔ ACADIA (2017): Electronic Control Module; VIN J (11th digit, Limited), (behind fan shroud)
- ✔ CAPRICE (2017): Electronic Control Module; 3.6L
- ✔ ENCLAVE (2017): Electronic Control Module; (behind fan shroud)
- ✔ EQUINOX (2017): Electronic Control Module; (LH engine compartment)
- ✔ IMPALA (2017-2019): Electronic Control Module
- ✔ REGAL (2017): Electronic Control Module; (LH engine compartment)
- ✔ TERRAIN (2017): Electronic Control Module; (LH engine compartment)
- ✔ TRAVERSE (2017): Electronic Control Module; (behind fan shroud)
- ✔ VERANO (2017): Electronic Control Module
- ✔ XTS (2017-2019): Electronic Control Module; (3.6L), VIN 3 (8th digit, opt LFX)
Choosing our pre-programmed 2017 Regal ECM is the smartest way to get your vehicle back to factory-spec performance without the hassle and expense of dealership service.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive your VIN, as the programming is specific to your vehicle.
Is any additional programming required after installation?
No. This ECM comes fully programmed with the latest software for your VIN. The only step you may need to perform is a simple security relearn procedure, which involves a series of key cycles and does not require any special tools.
What if this doesn’t fix my problem?
While this module is a common solution for many engine issues, we always recommend a proper diagnosis. If you install the part and it does not solve your issue, please contact us. We offer support to help ensure your vehicle is repaired correctly.
Is this compatible with other part numbers?
Yes, this module, 12667189, is also a direct replacement for part numbers 12667002 and 12666070, covering a wide range of GM vehicles.
Where is the VIN located on my vehicle?
You can typically find your VIN on a plate on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.