Is Your Buick Regal Experiencing Frustrating Engine Problems?
If your 2017 Regal is stalling, running rough, showing a persistent Check Engine Light, or simply won’t start, a failing Engine Control Module (ECM) is a very likely culprit. As the central computer for your engine, a faulty ECM can cause a wide range of confusing and difficult-to-diagnose issues, from poor fuel economy to complete communication failure with your scan tool. Don’t let a bad module keep you off the road. This is the reliable, straightforward solution you’ve been looking for.
The Smart Solution: A Plug-and-Play ECM Programmed for Your Car
Forget about the time and expense of a dealership visit. We send you a high-quality replacement ECM that is pre-programmed specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This ensures perfect compatibility and optimal performance right out of the box.
Key Symptoms of a Failing 2017 Regal ECM:
- ✔ Persistent Check Engine Light (CEL) with various codes
- ✔ Engine stalling, stumbling, or misfiring
- ✔ No-start or intermittent starting conditions
- ✔ Noticeable decrease in fuel efficiency
- ✔ Transmission shifting erratically or harshly
- ✔ Communication errors with diagnostic scan tools
From the Shop Floor: A Real-World Diagnostic Story
“A customer’s 2017 Impala came into my shop last month with what they were sure was a failing transmission. It was shifting hard and sometimes wouldn’t go into gear. They had already spent money on a fluid flush elsewhere with no improvement. After hooking up my pro-level scanner, I noticed the ECM wasn’t sending consistent commands to the Transmission Control Module (TCM). The voltage readings were all over the place. Instead of a costly transmission job, the fix was a properly programmed ECM. This is a classic example of how a faulty engine computer can create symptoms in other systems. We installed a VIN-programmed unit just like this one, and the car drove perfectly.”
Plug-and-Play Installation: No Dealer Visit Required
Installing your replacement module is a straightforward process that you can do at home with basic tools. For the 2017 Buick Regal, the ECM is conveniently located in the left-hand (driver’s side) of the engine compartment.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down.
- Locate the ECM: Open the hood and find the module on the driver’s side of the engine bay. It will have several large electrical connectors attached.
- Disconnect Connectors: Carefully release the locking tabs on each electrical harness and pull them straight out from the module. Never force them. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed ECM in place and securely tighten the bolts.
- Reconnect Everything: Plug the electrical connectors back into the new module until they click, ensuring a secure connection. Reconnect the negative battery terminal.
- Final Step: Your vehicle may require a security relearn procedure, which can typically be done by cycling the key. The vehicle is now ready to start.
Part Number and Fitment Verification
This module is a direct replacement for part numbers 12666070, 12667002, and 12667189. It is guaranteed to fit the following vehicles:
- 2017 Buick Regal (LH engine compartment)
- 2017 Buick Verano
- 2017 Buick Enclave (behind fan shroud)
- 2017 GMC Acadia (Limited, VIN J, behind fan shroud)
- 2017 GMC Terrain (LH engine compartment)
- 2017 Chevrolet Caprice (3.6L)
- 2017 Chevrolet Traverse (behind fan shroud)
- 2017-2019 Chevrolet Impala
- 2017 Chevrolet Equinox (LH engine compartment)
- 2017-2019 Cadillac XTS (3.6L, VIN 3, LFX)
Order today and get your vehicle back to factory-spec performance with a reliable, VIN-programmed ECM delivered to your door.