Programmed 2012 Impala Engine Control Module ECM 12637106

Restore Your Impala’s Performance and Reliability

Is your 2012 Chevrolet Impala giving you headaches with erratic behavior, a no-start condition, or a persistent Check Engine light? You’re not alone. The Engine Control Module (ECM), the vehicle’s central computer, is often the source of these frustrating and hard-to-diagnose issues. When the ECM fails, it can disrupt everything from fuel delivery and ignition timing to transmission shifting, leaving you stranded and facing a costly trip to the dealership. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s performance and safety.

We offer a dependable and straightforward solution. This is a replacement Engine Control Module, part number 12637106, that arrives at your door fully programmed to your specific vehicle. Forget about expensive towing fees and dealer-only programming appointments. We handle the complex part for you. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will flash the module with the latest, most stable GM factory software. This ensures that your 2012 Impala Engine Control Module integrates seamlessly with your car’s existing systems, restoring its original function and efficiency.

Case Study: A Tricky Diagnosis

I remember a 2012 Impala that came into the shop with a complaint of intermittent stalling at stoplights and poor fuel economy. The owner had already replaced the spark plugs and a fuel pressure sensor at another shop with no success. The car wasn’t storing any consistent trouble codes, making it a real diagnostic puzzle. After hooking up our professional scan tool and monitoring live data, we noticed the short-term fuel trim values were jumping erratically, and the ignition timing would randomly retard for no reason. This pointed away from a mechanical issue and toward the processor itself. We swapped in a VIN-programmed ECM, and the problems vanished instantly. The fuel trims stabilized, and the engine ran smoothly. It’s a classic example of how a failing ECM can mimic other problems, costing you time and money on unnecessary parts.

Is Your Vehicle Showing These Telltale Signs of ECM Failure?

A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that the brain of your engine needs attention. Replacing your faulty 2012 Impala Engine Control Module can be the definitive fix.

✔ Check Engine Light is on with codes like P0601, P0606, or other internal processor faults.
✔ The engine cranks but refuses to start.
✔ Severe performance issues, such as rough idling, stalling, or hesitation.
✔ A noticeable drop in fuel efficiency for no apparent reason.
✔ Communication errors with other modules (U-codes).
✔ The cooling fans run constantly, even when the engine is cold.
✔ Harsh or incorrect automatic transmission shifting.

A Straightforward Guide to Installation

Installing your new ECM is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most difficult step, saving you hundreds of dollars in labor. Follow these steps for a successful installation:

Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system capacitors to discharge.
Locate the ECM: On the 2012 Impala, the Engine Control Module is typically mounted to the air cleaner bracket in the engine bay. It’s a silver metal box with large electrical connectors.
Disconnect the Connectors: Carefully unlatch and remove the wiring harness connectors from the old module. Inspect them for any corrosion or damage.
Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will need it for the new unit.
Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the original bolts.
Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
Perform Relearn (If Necessary): While we program the security information, some vehicles may require a simple key-cycle relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 30 seconds, and repeat two more times before starting the engine.

Verified Vehicle Compatibility

This ECM is a direct replacement for part number 12637106 and is interchangeable with several other GM part numbers, including 12616889, 12630908, 12642665, 12650256, and 12651993. It fits a wide range of vehicles. Please match your part number or vehicle from the list below to ensure proper fitment.

Buick Allure / LaCrosse (2010-2011)
Cadillac CTS / SRX (2010-2012)
Chevrolet Camaro (2012)
Chevrolet Captiva Sport (2012)
Chevrolet Equinox (2010-2011)
Chevrolet Impala (2012)
Chevrolet Orlando (2012-2013)
GMC Terrain (2010-2011)
Buick Regal (2011)
Saab 9-5 (2010-2011)

Note: This is not an exhaustive list. If you are unsure, please send us your VIN, and we will verify compatibility for you. A correct match is crucial for a successful repair.