Is Your Buick Regal Running Rough, Stalling, or Showing a Check Engine Light?
If you’re dealing with frustrating engine problems in your 2011 Regal, a failing Engine Control Module (ECM) is often the culprit. As a mechanic with over 20 years of diagnostic experience, I’ve seen firsthand how a faulty ECM can cause a cascade of issues that seem impossible to pin down. From erratic idling and poor fuel economy to a complete no-start condition, the ECM is the brain of your engine, and when it fails, your vehicle’s performance and reliability suffer dramatically.
This isn’t just another part; it’s the solution to get your car running correctly again. We are offering a genuine GM Engine Control Module, part number 12630908, which is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This means it arrives at your door ready for a straightforward installation, loaded with the latest factory software from GM. You get to skip the expensive dealership visit for programming and the uncertainty of a junkyard part that won’t communicate with your car’s other systems.
Symptoms of a Failing 2011 Regal Engine Control Module
A bad ECM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- โ Persistent Check Engine Light (CEL) with various communication or processor codes.
- โ Engine stalling, stumbling, or hesitating during acceleration.
- โ Unexplained drop in fuel mileage.
- โ Harsh or incorrect automatic transmission shifting.
- โ The vehicle cranks but refuses to start.
- โ Communication errors with diagnostic scan tools.
Expert Pro Tip: Check Your Connections First!
Before you condemn your old ECM, take a moment to perform a critical check. I’ve seen countless cases where the module itself was fine, but the problem was simple corrosion or a bent pin in the wiring harness connector. Disconnect the battery, unplug the ECM connectors, and use a bright flashlight to carefully inspect for any green or white powdery residue (corrosion) or any pins that look pushed back or bent. Cleaning the terminals with a dedicated contact cleaner can sometimes solve the issue. If the connections are pristine and problems persist, you can be confident the ECM is the fault.
Plug-and-Play Installation: No Dealer Visit Required
We make this repair as simple as possible. By programming the module with your VIN before shipping, we eliminate the most complex step. Once you receive your part, the installation is straightforward for a DIYer or any local mechanic.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the ECM: On the 2011 Buick Regal, the Engine Control Module is typically found in the engine compartment on the driver’s side (LH side).
- Disconnect and Remove: Carefully unplug the wiring harness connectors. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Reattach the negative battery terminal. Your vehicle may require a security relearn procedure, which is a simple process that can be found in your owner’s manual or online.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles and is interchangeable with several part numbers. Please verify your original part number or contact us with your VIN to confirm fitment. This unit replaces the following part numbers:
12616889, 12630908, 12637106, 12642665, 12650256, 12651993
Don’t let a faulty computer keep you off the road. Order this pre-programmed ECM today and restore your vehicle’s performance and reliability with confidence.