Restore Your Vehicle’s Brain and Bring Back That Smooth, Reliable Drive
Is your Pontiac G5, Chevy Cobalt, or Saturn Aura acting erratically? A frustrating check engine light that won’t go away, rough idling, or sudden stalling can point directly to a failing Powertrain Control Module (PCM). This isn’t just an inconvenience; it’s the central computer of your vehicle, and when it falters, it affects everything from fuel economy to engine performance. Don’t let a faulty computer dictate your driving experience. This direct-fit, professionally programmed PCM is the definitive solution to restore your vehicle’s health and your confidence on the road.
Warning Signs and How to Overcome Them
A failing engine computer can manifest in numerous ways, often mimicking other component failures. Recognizing these symptoms is the first step toward a successful repair. This module is designed to resolve these exact issues:
- ✔ Persistent Check Engine Light: Specifically for internal module fault codes like P0601, P0606, or other communication-related DTCs.
- ✔ Erratic Engine Performance: Unexplained stalling, rough running, hesitation during acceleration, or a noticeable drop in power.
- ✔ Poor Fuel Economy: If you’re suddenly making more trips to the gas station, a malfunctioning PCM could be mismanaging the fuel-to-air ratio.
- ✔ Transmission Shifting Problems: Harsh or delayed shifts can sometimes be traced back to incorrect signals from the engine computer.
- ✔ Complete No-Start Condition: In severe cases, the PCM can fail to manage the ignition or fuel systems, preventing the engine from starting at all.
An Expert’s Note: The End of the Diagnostic Chase
“I once worked with a customer who had replaced nearly every sensor on his Chevy Malibu trying to solve a ghost-like stalling issue. He was frustrated and out of money. We finally traced it to the PCM. After installing a pre-programmed unit like this one, the car ran perfectly. It was a powerful reminder: sometimes the problem is with the conductor of the orchestra, not the individual musicians. This part doesn’t just fix a component; it restores the harmony of the entire system, giving you back a car you can trust.”
Guided Installation to Restore Peace of Mind
Installing your new 2007-2010 G5 PCM is a straightforward process. Since we program the module to your specific VIN before it ships, you can avoid expensive trips to the dealership for flashing. Follow these steps for a confident installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old PCM: On most compatible models, the PCM is located in the engine bay, often near the front left side, sometimes under the battery or attached to the air cleaner box.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed PCM in the same location. Ensure it is securely fastened.
- Reconnect and Secure: Plug the wiring harnesses back into the new module. You should hear a ‘click’ as they lock into place. Give them a gentle tug to ensure they are secure.
- Final Steps: Reconnect the negative battery terminal. In some cases, a security or CASE relearn procedure may be necessary with a compatible scan tool, but for many, the vehicle will start and run perfectly.
Tailored Fit for Your Ride
This module is a direct replacement for service number 12635901 and is compatible with a wide range of General Motors vehicles. Please verify the service number on your original part or contact us with your VIN to confirm compatibility. This part fits:
- 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
- Chevrolet Express 1500 (4.3L): 2008-2009
- GMC Sierra 1500 (4.3L): 2007-2009
- GMC Savana 1500 (4.3L): 2008-2009
- Saturn Aura: 2008-2009
- Saturn Sky: 2008-2010
- Saturn Vue: 2008-2010
- Buick Lucerne (3.9L): 2009-2011
By purchasing this pre-programmed 2007-2010 G5 PCM, you’re not just buying a part; you’re investing in a reliable, long-term solution that gets you back on the road quickly and affordably.
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. We flash the module with the latest GM software updates using the VIN you provide during checkout. This means it arrives ready for installation. In some vehicles, a simple security relearn procedure may be required, which can often be done without special tools.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side dashboard visible through the windshield.
Is this a brand new part?
This is a professionally reconditioned and tested OEM part. Each unit undergoes a rigorous inspection and is programmed with certified software to ensure it meets or exceeds original factory performance standards, providing a reliable and cost-effective solution.
What if my original part number is not 12635901?
This module is a direct replacement for several service numbers, including 12597125, 12612397, 12629019, and others listed in the product details. As long as your vehicle is on the compatibility list, this part will function correctly once programmed to your VIN.
What is a CASE relearn and will I need one?
A Crankshaft Variation (CASE) relearn synchronizes the PCM with the crankshaft position sensor. While the vehicle will typically run without it, performing this procedure with a compatible scan tool after installation is recommended for optimal performance and to clear any related trouble codes.