Restore Peak Performance to Your Pontiac G5
Is your 2007-2010 Pontiac G5 suffering from erratic behavior, a persistent check engine light, or frustrating performance issues? The Powertrain Control Module (PCM), often called the Engine Control Module (ECM), is the central computer responsible for managing your vehicle’s engine, transmission, and emissions systems. When it begins to fail, it can cause a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs. This replacement ECM is the definitive solution to restore your vehicle’s factory performance, fuel efficiency, and reliability.
This unit, compatible with service number 12594750 and others, arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest GM-certified software updates before shipping, ensuring optimal performance and compatibility right out of the box. This eliminates the need for expensive towing and programming fees at a dealership, saving you both time and money.
From the Diagnostic Bay
We had a 2008 Pontiac G5 come into the shop with a classic complaint: intermittent stalling at stoplights and a check engine light for a throttle position sensor code. The owner had already replaced the throttle body twice at another shop, but the problem kept returning. After hooking up our diagnostic scanner and monitoring live data, we noticed the voltage readings from the ECM to the throttle body were erratic. The issue wasn’t the new parts; it was the computer failing to control them correctly. We installed a VIN-programmed 2007-2010 G5 ECM, performed the quick security relearn, and the car ran perfectly. It’s a textbook case of how a failing computer can mimic other component failures, making a direct-fit programmed module the true and final fix.
Common Symptoms of a Failing G5 Engine Computer
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
Why Choose a Pre-Programmed 2007-2010 G5 ECM?
The main advantage of our service is convenience and accuracy. Modern vehicle computers are not interchangeable. Each one is coded to the specific VIN and options of the car it came from. By providing us with your VIN during checkout, you receive a module that is a true plug-and-play solution. Once installed, you may only need to perform a simple security relearn procedure (often called a key relearn), which takes about 30 minutes and requires no special tools. This process pairs the new computer with your vehicle’s anti-theft system.
Guaranteed Compatibility
This ECM is a direct replacement for a wide range of GM vehicles and is guaranteed to be compatible if your original module carries any of the following service numbers:
- 12594750
- 12597125
- 12612397
- DL 216140
- 12629019
- 12635902
- 12611549
It is designed to fit a variety of models including the Pontiac G5, Chevrolet Cobalt, HHR, Malibu, Saturn Aura, and more. Please verify the fitment list to ensure it matches your specific vehicle and engine option.
Frequently Asked Questions
Do I need to program this ECM?
No. We program the module to your vehicle’s VIN before it ships. It arrives ready for installation. In most cases, you will only need to perform a simple security relearn procedure which can be done without any special tools.
What is the security relearn procedure?
The security relearn, or key relearn, is a process that syncs the new ECM with your car’s anti-theft system. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. Specific instructions for your vehicle are widely available online or in service manuals.
Where is the ECM located on my 2007-2010 Pontiac G5?
On the Pontiac G5 and Chevrolet Cobalt, the ECM is typically located in the engine compartment on the driver’s side, near the fuse box and behind the headlight assembly.
How do I provide my VIN?
After placing your order, you can send us a message with your 17-digit VIN. We cannot ship the part until we receive this information, as the programming is essential for the part to function in your vehicle.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, this part will resolve the issue. However, it’s crucial to ensure that the underlying cause of any diagnostic trouble codes (like a bad sensor or wiring issue) has been addressed first. This module will not fix problems related to other faulty components on the vehicle.
Is this a brand new part?
This is a high-quality, fully tested replacement part that has been meticulously inspected and prepared to meet or exceed original equipment specifications. It is loaded with the latest factory software for your vehicle.