2007-2010 G5 PCM 12597125 | Pre-Programmed to Your VIN | Plug & Play

Restore Your Vehicle’s Performance and Peace of Mind

Is a persistent check engine light dimming your driving enjoyment? Are you battling frustrating issues like rough idling, poor fuel economy, or unexpected stalling? These aren’t just annoyances; they’re signs that your vehicle’s brain—the Powertrain Control Module (PCM)—may be failing. It’s time to stop worrying and start driving with confidence again. This direct-replacement PCM, service number 12597125, is the definitive, hassle-free solution to restore the smooth, reliable performance you depend on.

Unlike a generic module from a parts store, this unit isn’t just a part in a box. It’s a complete solution. We take your vehicle’s unique Vehicle Identification Number (VIN) and flash the module with the very latest, most stable software updates directly from GM. This critical step ensures perfect communication between your engine, transmission, and other systems, eliminating the need for an expensive trip to the dealership for programming. It arrives at your door ready to install, getting you back on the road faster.

Warning Signs Your PCM Needs Attention

A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely fix you’ve been searching for:

• ✔ Persistent Check Engine Light (CEL) that won’t go away.
• ✔ Diagnostic Trouble Codes (DTCs) stored, especially P0601, P0602, P0606, or other internal controller errors.
• ✔ Unexplained drops in fuel mileage.
• ✔ Rough or erratic engine idling.
• ✔ Hesitation or stumbling during acceleration.
• ✔ Harsh or incorrect automatic transmission shifting.
• ✔ The engine cranks but refuses to start.
• ✔ Failure to pass state emissions testing.

A Technician’s Note

Before replacing your PCM, it’s always a good practice to ensure your battery is fully charged and the terminals are clean and tight. Low voltage can sometimes mimic PCM failure. Also, verify that the grounds for the old PCM are clean and free of corrosion. A solid ground connection is essential for the new module to function correctly and will ensure a long-lasting repair.

Guided Installation to Restore Your Ride

Installing your new 2007-2010 G5 PCM is a straightforward process that a confident DIYer can handle with basic tools. Follow these steps to get your vehicle back in top form.

1. Safety First: Disconnect the Battery. Before touching any electronics, always disconnect the negative terminal of your vehicle’s battery to prevent electrical shorts.
2. Locate the Old Module. On most compatible vehicles like the Pontiac G5 or Cobalt, the PCM is found in the left (driver’s side) front of the engine compartment, often near the air filter box or under the battery tray.
3. Disconnect and Remove. Carefully unplug the wiring harness connectors. They have locking tabs that may need to be gently pried or squeezed to release. Once disconnected, unbolt the module from its mounting bracket and remove it from the vehicle.
4. Install the New PCM. Mount your new, pre-programmed PCM securely onto the bracket. Reconnect the wiring harnesses, ensuring they click firmly into place. A secure connection is vital.
5. Reconnect the Battery. Attach the negative battery terminal you removed earlier.
6. Final Steps. In some cases, a security or crank relearn procedure may be necessary, which can often be initiated by a specific sequence of key turns. Your vehicle’s service manual will have the exact steps if required. Now, start the engine and enjoy the restored performance!

Guaranteed Compatibility for Your Vehicle

This module is a direct replacement for multiple service numbers, ensuring a perfect fit and function for a wide range of GM vehicles. Please verify your model and engine options below. This part is compatible with service numbers: 12612397, 12594750, 12597125, 12629019, 12635902, 12611549.

This part will fit these makes and models with these options:

By choosing this pre-programmed 2007-2010 G5 PCM, you’re not just buying a part; you’re investing in a reliable, long-term fix that brings back the joy and dependability of your vehicle.