Restore Your Vehicle’s Performance and Reliability
Is your Pontiac G6, Chevy Malibu, or other GM vehicle suffering from perplexing issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your engine. This vital component manages everything from fuel injection and ignition timing to transmission shifting and emissions control. When it falters, your vehicle’s performance and drivability suffer. This replacement PCM, part number 12635902, is the definitive solution to get your car back on the road, running as it should.
From the Diagnostic Bay
We had a 2009 Chevy HHR come into the shop that was driving the owner crazy. It would randomly stall at traffic lights and had a check engine light for multiple, unrelated sensor codes. The owner had already replaced the camshaft and crankshaft sensors, but the problem persisted. After hooking up our diagnostic scanner, we noticed erratic data streams coming from the PCM. We knew right away the module itself was the culprit. We installed one of our VIN-programmed units, performed the security relearn, and the HHR ran perfectly. It’s a common story – a faulty PCM can send you chasing phantom issues, but the right replacement part solves it all.
Why Choose a VIN-Programmed Module?
Simply swapping a used PCM from another vehicle won’t work. Each module is programmed with vehicle-specific information, including the Vehicle Identification Number (VIN) and calibrations for the engine, transmission, and options. Our service eliminates the guesswork and the need for expensive dealership programming. When you order, you provide us with your vehicle’s VIN. We then flash the module with the latest, most up-to-date software directly from GM for your exact vehicle. This ensures seamless integration, optimal performance, and correct function of all related systems right out of the box.
Diagnosing a Faulty 2008-2010 G6 PCM
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing a combination of the symptoms below, your PCM is the most likely cause. Replacing it with our pre-programmed unit is the most effective and reliable repair.
Common Failure Symptoms
- ✔ Persistent Check Engine Light (CEL) with various or random trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic idling.
- ✔ A complete no-start or hard-start condition where the engine cranks but won’t fire.
- ✔ Poor fuel economy and reduced engine power.
- ✔ Inconsistent or harsh transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
Broad Compatibility Across the GM Lineup
While this is a perfect solution for the 2008-2010 G6 PCM, this module (service number 12635902 and its alternates like 12597125, 12612397, and 12629019) was used in a wide array of General Motors vehicles. This ensures a high-quality, tested component for your specific application. It is a direct fit for models including:
- Chevrolet Cobalt (2007-2010)
- Chevrolet HHR (2007-2011)
- Chevrolet Malibu (2007-2012)
- Chevrolet Silverado & GMC Sierra 1500 with 4.3L V6 (2007-2009)
- Chevrolet Express & GMC Savana 1500 with 4.3L V6 (2008-2009)
- Pontiac G5 (2007-2010)
- Pontiac Solstice (2008-2010)
- Saturn Aura (2008-2009)
- Saturn Sky (2008-2010)
- Saturn Vue (2008-2010)
- And many more. Please verify your original part number to ensure compatibility.
This unit is a direct replacement, designed to restore factory performance and clear frustrating electronic issues. Installation is straightforward, though a security relearn procedure may be required after installation, which can often be done without special tools. Get your vehicle running smoothly again with a reliable, professionally programmed PCM.
Frequently Asked Questions
Do I need to have this PCM programmed?
No, we handle the programming for you before shipment. Simply provide your vehicle’s VIN at checkout, and we will flash the module with the latest GM software specific to your car. This makes the installation process much simpler.
What is a security relearn procedure?
After installation, your vehicle’s anti-theft system (Passlock/VATS) needs to synchronize with the new PCM. This is a simple procedure that usually involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. Instructions are readily available online for your specific model.
How do I find my original part number?
Your PCM’s part number is printed on a sticker on the module itself. It is typically a silver or white sticker with a barcode. The module is often located in the engine bay, sometimes under the battery tray or near the air filter box.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty PCM, then yes, this replacement will resolve the issue. It’s crucial to ensure that the codes are not being caused by other failing sensors or mechanical problems.
Is this a plug-and-play part?
Because we program it to your VIN, it is nearly plug-and-play. You will need to install it and may have to perform the security relearn procedure. No further programming or dealership visits are required.