Is Your Buick Regal Running Rough? It Could Be The ECM.
If your 2017 Buick Regal is suddenly experiencing frustrating issues like stalling at intersections, poor acceleration, a persistent Check Engine Light, or erratic transmission shifting, the root cause is often the Engine Control Module (ECM). As the central computer for your vehicle’s powertrain, a failing ECM can create a cascade of problems that are frequently misdiagnosed. Don’t waste time and money replacing perfectly good sensors or fuel system componentsโget the direct solution right here.
This is a genuine GM Engine Control Module, part number 12667002, that arrives at your door fully programmed to your specific vehicle. We take your Vehicle Identification Number (VIN) at checkout and flash the module with the latest, most stable software updates directly from General Motors. This critical step ensures a seamless installation and restores your vehicle’s original performance, reliability, and fuel efficiency.
Common Symptoms of a Failing 2017 Regal ECM:
- โ Persistent and unexplained Check Engine Light (CEL)
- โ Engine stalling, stumbling, or hesitating during acceleration
- โ Noticeable decrease in fuel economy
- โ Harsh or incorrect automatic transmission shifting
- โ Complete no-start condition where the engine cranks but won’t fire
- โ Communication errors with diagnostic scan tools
Expert Pro Tip: Check Your Connectors First
Before you condemn your old ECM, take a moment to inspect the electrical connectors that plug into it. Over the years, I’ve seen dozens of vehicles where intermittent issues were caused by nothing more than slight corrosion or a loose pin on the main harness connectors. Unplug them (with the battery disconnected!) and look for any greenish-white powder or bent pins. Cleaning them with a dedicated electronics cleaner can sometimes solve the problem. If they look pristine, it’s a strong indicator the module itself has failed internally.
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest advantages of our service is that this 2017 Regal ECM is delivered ready for installation. Since we handle the programming, you bypass the need for expensive dealership tools and labor. The process is straightforward for a DIY mechanic with basic tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for all systems to discharge.
- Locate the ECM: On the 2017 Buick Regal, the ECM is conveniently located in the engine compartment on the driver’s side (LH side).
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few 10mm bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
- Reconnect Everything: Plug the electrical harnesses back in until they click firmly into place. Reconnect your negative battery terminal.
- Final Step: Some vehicles may require a security relearn procedure, which can typically be done by cycling the key. Your vehicle’s service manual will have the specific, simple steps if needed.
Guaranteed Fitment and Compatibility
This module is a direct replacement for part numbers 12667002, 12666070, and 12667189. It is guaranteed to fit and function correctly on the following GM vehicles:
- 2017 Buick Regal (LH engine compartment)
- 2017 Buick Enclave (behind fan shroud)
- 2017 Buick Verano
- 2017-2019 Cadillac XTS (3.6L, VIN 3)
- 2017 Chevrolet Caprice (3.6L)
- 2017-2019 Chevrolet Impala
- 2017 Chevrolet Equinox (LH engine compartment)
- 2017 Chevrolet Traverse (behind fan shroud)
- 2017 GMC Acadia (Limited, VIN J)
- 2017 GMC Terrain (LH engine compartment)
Please provide your VIN upon purchase to ensure we deliver a perfectly matched and updated module for your exact vehicle. Restore your car’s brain and get it running like new again.