Restore Peak Performance to Your Vehicle
Is your 2007 Pontiac G6 or other GM vehicle suffering from perplexing engine issues, a persistent check engine light, or a no-start condition? The Powertrain Control Module (PCM), often called the Engine Control Module (ECM), is the central computer responsible for managing your engine’s fuel delivery, ignition timing, emissions systems, and transmission shifting. When it fails, it can cause a cascade of problems that are often misdiagnosed. This genuine used GM PCM, part number 19210736 (also compatible with 12605843), is the definitive solution to get your vehicle running reliably again.
From the Diagnostic Bay
We had a 2007 Pontiac G6 come into the shop with an issue that was driving the owner crazy. The car would run fine for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. No specific codes were stored, just a generic U-code for lost communication. The owner had already replaced the crankshaft and camshaft sensors with no success. After hooking up our professional scan tool and monitoring live data, we noticed the PCM would intermittently go offline right before the stall. This pointed to an internal failure in the module itself. We installed one of these VIN-programmed PCMs, performed the necessary security relearn, and the car ran perfectly. The customer called a month later to say the problem was completely gone. It’s a classic case of a failing computer mimicking sensor issues.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light: The most common indicator, often with codes related to internal processor failure or communication errors (U-codes).
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, run rough, or misfire as the PCM fails to correctly control spark and fuel.
- ✔ No-Start Condition: Your vehicle may crank but refuse to start because the PCM isn’t activating the fuel pump or ignition coils.
- ✔ Poor Fuel Economy: An inefficiently running engine, due to incorrect fuel and air calculations, will consume more gasoline.
- ✔ Erratic Transmission Shifting: The PCM works with the Transmission Control Module (TCM) to ensure smooth shifts. A faulty PCM can cause harsh or delayed shifting.
- ✔ Failed Emissions Test: The PCM manages all emissions components, and a failure will almost certainly result in a failed smog check.
Why Our 2007 G6 PCM is the Right Choice
This isn’t just a used part pulled from a shelf. Each module undergoes a critical programming process before it ships. When you provide your vehicle’s VIN, we flash the unit with the latest, most stable software updates directly from General Motors. This step is essential for ensuring the PCM communicates flawlessly with your vehicle’s specific systems, including the anti-theft system (Pass-Key/VATS), transmission, and body control module. Skipping this step is why simply swapping a used computer from another car often doesn’t work. This module is a cost-effective and reliable alternative to an expensive new unit from the dealership.
This versatile module fits a wide range of 2007 GM vehicles beyond the Pontiac G6, including the Saturn Sky, Cadillac DTS, Chevy Impala, Buick Lucerne, and many more. Please verify your original part number and consult the detailed fitment list to ensure compatibility.
Frequently Asked Questions
What exactly is a PCM and what does it do?
The Powertrain Control Module (PCM) is your car’s main engine computer. It takes data from sensors all over the engine and drivetrain to control fuel injection, ignition timing, variable valve timing, and automatic transmission shift points to ensure optimal performance, fuel efficiency, and low emissions.
Is this part ready to install right out of the box?
Yes, this part is pre-programmed to your vehicle’s VIN. However, depending on your specific GM model, you may need a certified mechanic with a professional scan tool to perform a security relearn procedure (also known as a VATS relearn) and a Crankshaft Variation (CASE) relearn. This synchronizes the new PCM with your vehicle’s anti-theft system and crankshaft position sensor.
Where 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 ship the module until we receive this information, as the programming is specific to your car.
Is this a new part?
No, this is a high-quality, tested, used OEM part sourced from a salvaged vehicle. It is then professionally programmed to function correctly in your vehicle.
Does this fit models other than the 2007 Pontiac G6?
Absolutely. This PCM is compatible with a wide array of 2007 GM vehicles, including models from Cadillac, Chevrolet, Buick, Saturn, and GMC. Please review the full compatibility list on this page to confirm it fits your specific model and engine option.