2017 Buick Regal ECM Engine Control Module 12667189

Is Your Buick Regal Running Rough? The ECM Might Be the Culprit.

The Engine Control Module (ECM), often called the engine computer, is the electronic brain of your 2017 Buick Regal. It controls a vast network of sensors and actuators to manage everything from fuel injection and ignition timing to emissions systems and transmission shifting. When this critical component begins to fail, it can cause a wide range of frustrating and often confusing symptoms that can leave you stranded. If you’re dealing with an illuminated Check Engine Light, inexplicable stalling, or a sudden drop in performance, a faulty ECM could be the root cause.

This replacement Engine Control Module, part number 12667189, is the definitive solution to restore your vehicle’s factory performance and reliability. Unlike a generic part from a local store, this unit is specifically prepared for your vehicle. We handle the complex programming process for you, flashing the module with the latest GM-certified software updates using the VIN you provide. This ensures that once installed, the computer communicates flawlessly with all other modules in your vehicle, eliminating compatibility issues and the need for expensive dealership programming.

Common Symptoms of a Failing 2017 Regal ECM

A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following issues, it’s a strong indicator that your ECM needs attention. Keep an eye out for these common warning signs:

• ✔ Check Engine Light: The most obvious sign. The light may be on constantly or flash intermittently. Codes related to sensor circuits (P0100-P0600 series) or internal processor failure (P0601, P0606) are common.
• ✔ Engine Stalling or Misfiring: The engine may stall for no apparent reason, either while driving or at idle. You might also notice rough idling or random engine misfires.
• ✔ No-Start Condition: The engine cranks but refuses to start. This can happen if the ECM is not properly controlling the fuel injectors or ignition coils.
• ✔ Poor Performance and Fuel Economy: A noticeable decrease in acceleration, power, and a significant drop in your average miles per gallon (MPG) can be traced back to incorrect ECM calculations.
• ✔ Transmission Shifting Problems: The ECM works closely with the Transmission Control Module (TCM). A faulty ECM can cause harsh shifting, failure to shift, or getting stuck in one gear.
• ✔ Intermittent Electrical Issues: Seemingly unrelated problems, like cooling fans not turning on or erratic gauge behavior, can sometimes be caused by an internal ECM fault.

Plug-and-Play Installation Process

We make the replacement process as straightforward as possible. By programming the module to your vehicle’s specific VIN before shipping, we eliminate the most difficult step. Once you receive your part, the process is typically as follows:

1. Disconnect the Battery: Always disconnect the negative battery terminal before working on any vehicle electronics.
2. Locate the ECM: On the 2017 Buick Regal, the ECM is typically found in the engine compartment on the driver’s side.
3. Remove the Old Module: Carefully disconnect the wiring harnesses and unbolt the old ECM from its mounting bracket.
4. Install the New Module: Mount the new ECM and securely reconnect the wiring harnesses. Ensure the connectors click into place.
5. Reconnect the Battery: Reattach the negative battery terminal.
6. Perform Security Relearn (if necessary): In some cases, a simple security relearn procedure may be required. This can often be done without special tools and involves a sequence of key cycles. Instructions are widely available or can be provided upon request.

Guaranteed Fitment for Your GM Vehicle

This module is a direct replacement for part number 12667189 and is also compatible with interchangeable part numbers 12667002 and 12666070. It is guaranteed to fit the following makes and models:

• 2017 Buick Regal (Electronic Control Module; LH engine compartment)
• 2017 Buick Enclave (Electronic Control Module; behind fan shroud)
• 2017 Buick Verano (Electronic Control Module)
• 2017 Cadillac XTS (Electronic Control Module; 3.6L, VIN 3)
• 2017 Chevrolet Caprice (Electronic Control Module; 3.6L)
• 2017 Chevrolet Traverse (Electronic Control Module; behind fan shroud)
• 2017-2019 Chevrolet Impala (Electronic Control Module)
• 2017 Chevrolet Equinox (Electronic Control Module; LH engine compartment)
• 2017 GMC Acadia (Electronic Control Module; VIN J, Limited; behind fan shroud)
• 2017 GMC Terrain (Electronic Control Module; LH engine compartment)

Don’t let a faulty computer keep your car off the road. Order this pre-programmed ECM today and restore the smooth, reliable performance you expect from your vehicle.