Bring Your Pontiac G5 Back to Life
Is your Pontiac G5 struggling with frustrating issues like stalling, rough idling, or a persistent check engine light that just won’t go away? These are classic signs of a failing Powertrain Control Module (PCM), the vital computer that manages your engine’s performance. Don’t let a faulty module keep you off the road. This replacement PCM is the reliable, straightforward solution you need to restore your vehicle’s performance and your driving confidence.
We take the guesswork and complexity out of the repair. When you order, simply provide us with your vehicle’s VIN. Our technicians will then flash the module with the latest, most stable GM software updates specific to your car. It arrives at your doorstep ready to install, eliminating the need for an expensive trip to the dealership for programming. This is the smart way to get your G5 running like it should.
Warning Signs Your PCM Needs Attention
- ✔ Unexplained drop in fuel economy.
- ✔ Engine stalling, sputtering, or hesitating during acceleration.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ The check engine light is illuminated with communication-related trouble codes (e.g., U0100, P0606).
- ✔ Erratic automatic transmission shifting.
- ✔ Seemingly random electrical issues affecting other modules.
From the Garage: A Cobalt’s Comeback
We had a customer, Mark, with a 2008 Cobalt that was his daily commuter. It started with a slight hesitation, then progressed to stalling at red lights. He’d replaced sensors and checked wiring, but nothing worked. The codes were all over the place. He was about to give up on the car. We sent him one of these pre-programmed modules. He called back a few days later, ecstatic. The install was simple, the car started right up, and it drove smoother than it had in years. He said it was like getting his old, reliable car back. That’s the difference the right part makes.
Guided Installation for a Confident Repair
- Safety First: Begin by disconnecting the negative terminal of your vehicle’s battery to prevent any electrical shorts.
- Locate the Old Module: On most G5 and Cobalt models, the PCM is located in the engine bay, on the driver’s side near the front. It’s a silver box with several large electrical connectors.
- Disconnect and Remove: Carefully unclip the wiring harnesses. They have locking tabs, so be gentle. Once disconnected, unbolt the module from its mounting bracket.
- Install the New 2007-2010 G5 PCM: Secure the new, pre-programmed module onto the bracket. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Final Steps: Your vehicle may require a security relearn procedure, which is a simple process that can often be done without special tools. Instructions can be easily found online for your specific model. Once complete, start the engine and enjoy a restored, smooth-running vehicle.
Tailored Fit for Your Ride
This module is a direct-fit replacement for service numbers 12597125, 12612397, 126140, 12594750, 12629019, 12635902, and 12611549, and is compatible with a wide range of GM vehicles, including:
- Pontiac G5: 2007-2010
- Pontiac G6: 2008-2010
- Pontiac Solstice: 2008-2010
- Chevrolet Cobalt: 2007-2010
- Chevrolet HHR: 2007-2011
- Chevrolet Malibu: 2007-2012
- Chevrolet Impala: 2010-2011
- Chevrolet Silverado 1500 (4.3L): 2007-2009
- GMC Sierra 1500 (4.3L): 2007-2009
- Saturn Aura: 2008-2009
- Saturn Vue: 2008-2010
- Saturn Sky: 2008-2010
- Buick Lucerne (3.9L): 2009-2011
- Chevrolet Express 1500 Van (4.3L): 2008-2009
- GMC Savana 1500 Van (4.3L): 2008-2009
Do I need to do anything after installing this PCM?
Because this module is programmed to your VIN, it’s nearly a plug-and-play installation. However, most GM vehicles will require a simple security relearn procedure (also known as a CASE relearn or anti-theft relearn) to sync the new PCM with your vehicle’s keys and anti-theft system. This process typically involves a sequence of key turns and waiting periods and does not require a scan tool.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your module until we receive this information, so please provide it promptly to avoid delays.
Is this a new or used part?
This is a high-quality, inspected, and tested component that has been verified to meet or exceed original equipment performance. It is loaded with vehicle-specific software directly from GM’s databases.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM or a software issue that the latest updates can correct, then yes, this will resolve the problem. It is always recommended to have the codes professionally diagnosed to ensure the PCM is the root cause before ordering.
What if my part number isn’t listed?
The service numbers provided cover a wide range of original parts. If your number is not on the list, please contact us with your vehicle’s VIN and original part number. We can verify compatibility for you to ensure you get the correct component.