2009 Traverse Engine Control Module ECM 12623325 Programmed to VIN

Is Your 2009 Traverse or Acadia Running Rough or Not Starting at All?

As a master tech with over two decades of experience under the hood, I’ve seen this scenario countless times. A customer brings in their 2009 GM SUV—a Traverse, Acadia, Enclave, or Outlook—with a list of baffling symptoms. The check engine light is on, it’s running rough, hesitating on acceleration, or worse, it’s a crank-no-start situation. They’ve often replaced sensors and spark plugs, but the problem persists. The root cause? More often than not, it’s a failing Engine Control Module (ECM).

The Brain of Your Engine: Why the ECM Fails

Think of the ECM as the central computer for your engine. It controls everything from the fuel injectors and ignition coils to the transmission shift points and cooling fans. On these specific GM models, the ECM is often mounted behind the fan shroud. While this protects it from some elements, it also exposes it to constant, intense heat cycles every time you drive. Over years and thousands of miles, this thermal stress can cause microscopic cracks in the internal solder joints and lead to the failure of critical electronic components.

Common symptoms I’ve diagnosed that point directly to a bad ECM include:

• ✔ Check Engine Light (CEL) with communication-related codes (U-codes) or multiple random circuit codes.
• ✔ Engine cranks but will not start.
• ✔ Severe engine hesitation or stumbling under load.
• ✔ A scan tool that cannot communicate with the ECM.
• ✔ Unexplained loss of fuel or spark.
• ✔ Poor fuel economy and rough idling.

The Simple, Reliable Solution: A Pre-Programmed ECM

In the past, replacing an ECM was a major job that always ended with a trip to the dealership and a hefty bill for programming. This module changes that. We’ve eliminated the most difficult step. When you purchase this ECM, you provide us with your vehicle’s 17-digit VIN. My team then uses certified equipment to flash the module with the absolute latest, most stable software directly from GM for your specific vehicle. It arrives at your door ready for a true plug-and-play installation.

Key Benefits of This Module:

• ✔ No Dealer Programming Required: We handle the complex flashing process before we ship. This saves you time, towing fees, and expensive dealership labor costs.
• ✔ Latest GM Software Updates: Your module comes loaded with the newest software, which often corrects factory bugs related to fuel trim, transmission shifting, and idle stability.
• ✔ Restored Performance: A new, correctly programmed ECM will restore your engine’s power, fuel efficiency, and smooth operation.
• ✔ Direct-Fit Replacement: This module is a direct replacement for part numbers 12623325, 12628387, 12605672, 12630594, and 19300016, ensuring a perfect fit and connection.

Guaranteed Compatibility

This Engine Control Module is a guaranteed fit for the following vehicles with the specified options. Please verify your vehicle is on this list before ordering.

• ✔ 2009 Acadia (Electronic Control Module; behind fan shroud)
• ✔ 2009 Traverse (Electronic Control Module; behind fan shroud)
• ✔ 2009 Enclave (Electronic Control Module; behind fan shroud)
• ✔ 2009 Outlook (Electronic Control Module; behind fan shroud)
• ✔ 2009 Cadillac CTS (Electronic Control Module; RH front engine compartment, 3.6L, VIN V)
• ✔ 2009 Cadillac STS (Electronic Control Module; RH engine, 3.6L)
• ✔ 2008 Cadillac CTS (Electronic Control Module; RH front engine compartment, 3.6L, VIN V)
• ✔ 2008 Cadillac STS (Electronic Control Module; RH engine, 3.6L)

After your purchase, simply send us a message with your VIN. We’ll take care of the rest, getting a fully programmed, ready-to-install ECM on its way to you so you can get your vehicle back on the road where it belongs.