Is Your Chevrolet HHR Running Rough, Stalling, or Showing a Check Engine Light?
The Powertrain Control Module (PCM), often called the Engine Control Module (ECM), is the central computer of your 2007-2011 Chevrolet HHR. It’s responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, it can cause a wide range of frustrating and often misdiagnosed problems. You might be experiencing poor fuel economy, a sudden loss of power, or even a no-start condition that leaves you stranded. Don’t let a faulty computer dictate your vehicle’s reliability.
This is a direct-fit replacement PCM, service number 12630186, which also interchanges with part numbers 12597125, 12612397, 12594750, 12629019, 12635902, and 12611549. We take the guesswork out of the repair by programming the module specifically for your vehicle using your VIN. This ensures that all communications between the engine, transmission, and other onboard systems are perfectly synchronized, just as the factory intended. The module arrives with the latest GM software updates, often correcting underlying drivability issues you may not have even known were software-related.
From the Diagnostic Bay
We had a 2009 HHR come into the shop with a complaint of intermittent stalling at stoplights and a persistent P0606 (Internal Control Module Processor Error) code. The owner had already replaced the spark plugs, ignition coils, and even the throttle body with no success. The check engine light would clear, but always return. After confirming power and grounds to the module were solid, we knew the issue was internal to the computer. Instead of a costly trip to the dealer, we installed one of our VIN-programmed PCMs. After a quick security relearn procedure, the HHR ran perfectly. The P0606 code was gone for good, and the stalling issue was completely resolved. It’s a classic case where shotgunning parts costs more time and money than correctly identifying the root cause—the brain of the operation.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is illuminated with communication-related or internal processor fault codes (e.g., P0601, P0606).
- ✔ Your vehicle fails to start or starts and then immediately stalls.
- ✔ Noticeable decrease in fuel efficiency for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Engine misfires, stumbles, or hesitates during acceleration.
- ✔ Cooling fans not turning on, leading to overheating, or staying on constantly, draining the battery.
- ✔ Other warning lights, like the traction control or ABS indicators, may illuminate.
Why Choose Our Pre-Programmed 2007-2011 HHR PCM?
Getting your vehicle back to factory-spec performance is our priority. A used module from a salvage yard won’t work, as it’s locked to the original vehicle’s VIN. Our solution provides a fully functional, tested computer that is programmed and ready for installation. We use your vehicle’s unique VIN to load the correct software and calibrations directly from GM’s database. This process ensures compatibility with your specific engine, transmission, and options package. For many owners, this is a simple plug-and-play repair, though some vehicles may require a straightforward security relearn procedure (often called a key relearn or anti-theft relearn) which can typically be done without special tools. This 2007-2011 HHR PCM is the most reliable and efficient way to solve complex electronic issues and restore your vehicle’s performance and dependability.
This versatile module isn’t just for the HHR. It’s the correct electronic control module for a wide array of GM vehicles, including the Chevrolet Cobalt, Malibu, Silverado 1500, Pontiac G5, G6, Solstice, Saturn Aura, Sky, and Vue, among others. Please verify the part number and check the detailed fitment list to ensure it matches your specific application.
Frequently Asked Questions
Do I need to send you my old computer?
No, there is no core charge or need to send your original PCM to us. This is a replacement part that is programmed and sent directly to you.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This is critical for us to load the correct GM software and calibrations for your specific car or truck.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. However, after installation, your vehicle may require a security relearn procedure to sync the new PCM with your vehicle’s anti-theft system. This procedure can often be performed by the owner and instructions are widely available online.
Will this fix my car’s problem for sure?
This PCM will correct any issues directly caused by a faulty module. However, it’s essential to ensure your vehicle has been properly diagnosed. This part will not fix problems related to bad sensors, wiring shorts, or mechanical failures. A correct diagnosis is key to a successful repair.
What does ‘VIN Programmed’ mean?
VIN programming means we flash the computer with the specific software and calibration files that match your vehicle’s exact build, as determined by its VIN. This ensures the engine, transmission, anti-lock brakes, and all other systems communicate and operate correctly, just as they did from the factory.