Breathe New Life into Your Vehicle’s Engine
Is your ride suffering from baffling electrical issues, a persistent check engine light, or unpredictable performance? A failing Powertrain Control Module (PCM) is often the hidden culprit behind these frustrations, acting as the brain of your vehicle’s engine and transmission. This replacement PCM, service number 12597125, is the definitive solution to restore the crisp, reliable performance you depend on. We take the guesswork out of the repair by pre-programming the module to your car’s exact Vehicle Identification Number (VIN), ensuring it arrives ready for a straightforward installation.
Warning Signs and How to Overcome Them
If you’re noticing any of the following symptoms, it’s a strong indicator that your engine computer needs attention. Replacing it can bring back the smooth operation and confidence you’ve been missing.
- ✔ Check Engine Light: Clears persistent and troubling codes like P0601, P0602, or P0606, which point directly to internal module failure.
- ✔ Poor Performance: Solves issues like rough idling, hesitation during acceleration, and decreased power output.
- ✔ Reduced Fuel Economy: Restores the precise fuel and timing calculations needed for optimal MPG, saving you money at the pump.
- ✔ No-Start or Stalling: Fixes intermittent starting problems or sudden engine shutdowns that can leave you stranded.
- ✔ Erratic Shifting: Corrects harsh or delayed gear changes by re-establishing clear communication with the transmission control module.
Guided Installation for a Confident Fix
You don’t need to be a master mechanic to complete this job. With a few basic tools and these simple steps, you can get your car back on the road in no time. This is a crucial step in restoring your vehicle’s health.
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most compatible models, the PCM is found in the engine bay, often near the battery or air filter box. It’s a silver box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harnesses. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed PCM in the same location. Securely reconnect the wiring harnesses, ensuring they click firmly into place.
- Final Steps: Reconnect the negative battery terminal. In many cases, the vehicle will start and run perfectly. Some vehicles may require a simple security relearn procedure, which typically involves cycling the key in the ignition.
Expert Tip: Check Your Grounds
Before condemning your old PCM, take a moment to inspect the main engine and chassis ground wires. A loose, corroded, or broken ground can cause many of the same symptoms as a failing module. Ensuring these connections are clean and tight is a crucial diagnostic step that can sometimes save you the cost of a replacement part. A solid ground is the foundation of a healthy electrical system.
Tailored Fit for Your Ride
This module is a direct-fit replacement for a wide range of General Motors vehicles. While this listing focuses on the 2008-2010 G6 PCM, it is also compatible with the models listed below. Always verify that your original module’s service number is on our list to guarantee a perfect match.
Compatible Service Numbers: 12612397, 126140, 12594750, 12597125, 12629019, 12635902, 12611549
Vehicle Fitment Includes:
- Buick Lucerne (2009-2011)
- Chevrolet Cobalt (2007-2010)
- Chevrolet HHR (2007-2011)
- Chevrolet Impala (2010-2011)
- Chevrolet Malibu (2007-2012)
- Chevrolet Express/GMC Savana 1500 Van (2008-2009)
- Chevrolet Silverado/GMC Sierra 1500 Pickup (2007-2009)
- Pontiac G5 (2007-2010)
- Pontiac G6 (2008-2010)
- Pontiac Solstice (2008-2010)
- Saturn Aura (2008-2009)
- Saturn Sky (2008-2010)
- Saturn Vue (2008-2010)
Frequently Asked Questions
What information do you need to program the PCM?
After you complete your purchase, we will need your vehicle’s 17-digit VIN. This allows us to flash the module with the correct, factory-specified software and calibrations for your exact car, ensuring a seamless plug-and-play experience.
Will I need to do anything after I install it?
In most cases, the vehicle will start and run correctly immediately. However, some GM vehicles may require a simple security relearn procedure (often called a ‘key-on/key-off’ cycle) to sync the new PCM with the anti-theft system. Instructions for this are readily available online or in your owner’s manual.
Is this a brand new part?
This is a high-quality, fully tested replacement part that has been meticulously inspected to meet or exceed original equipment performance. It is loaded with fresh, vehicle-specific software from GM to provide lasting reliability.
What if my original part number isn’t on the list?
Please contact us with your vehicle’s VIN and the service number from your original module. GM uses many interchangeable part numbers, and we can verify compatibility to ensure you receive the correct component for your repair.
How difficult is the installation process?
The physical installation is straightforward for most DIY enthusiasts with basic hand tools. It typically involves disconnecting the battery, unplugging a few connectors, and removing a few bolts. The most important part is providing us with the correct VIN so we can handle the complex programming for you.