Is your Chevy Cobalt, HHR, or Pontiac Pursuit giving you headaches with stalling, rough idling, or a ‘Check Engine’ light that won’t quit? A faulty Engine Control Module (ECM) is often the culprit, leaving you stranded and stressed. This pre-programmed ECM is your direct, reliable solution to get back on the road with confidence, eliminating the guesswork and costly dealership programming fees.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing computer is the most likely cause. This unit is the definitive fix for problems stemming from a bad engine computer. Common symptoms include:
- Poor or erratic engine performance
- Engine stalling or misfiring
- Difficulty starting the vehicle
- Noticeable drop in fuel economy
- Erratic automatic transmission shifting
- Check Engine Light illumination with codes like P0601, P0606, or other communication faults
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We flash the unit with the latest GM software updates specifically for your vehicle’s VIN, ensuring it communicates perfectly with your car’s systems right out of the box. Getting a reliable, properly functioning 2005-2006 Cobalt ECM is the key to restoring your car’s original performance and dependability.
Features & Benefits
- ✔ Plug-and-Play Installation: This unit arrives programmed to your specific VIN. No need for an expensive trip to the dealership for flashing.
- ✔ Latest GM Software: We install the most current vehicle-specific software updates from General Motors, which can resolve factory bugs and improve engine and transmission performance.
- ✔ Resolves Common Issues: Engineered to fix frustrating problems like stalling, poor fuel economy, erratic shifting, and persistent check engine lights caused by a faulty ECM.
- ✔ Direct Fit Guarantee: Compatible with multiple service numbers including 12605766, 12599714, and 12589998, ensuring a perfect match for your 2005-2006 Cobalt, HHR, or Pursuit.
- ✔ Peace of Mind Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Many people don’t realize that an ECM is the ‘brain’ of their vehicle. Simply swapping one from a junkyard car won’t work because it’s not programmed to communicate with your car’s specific components, like the ignition and security system (Passlock). This leads to a no-start condition and more frustration. Our VIN programming service is what makes this a true plug-and-play solution. We handle the complex part so you can focus on the simple installation and enjoy a car that runs like it should. A properly programmed 2005-2006 Cobalt ECM is essential for a successful repair.
Frequently Asked Questions
Do I need to get this programmed by a dealer?
No. This ECM arrives at your door fully pre-programmed to your vehicle’s specific VIN. It is ready to be installed right out of the box, saving you time and the high cost of dealership programming.
How do I provide my VIN?
After you complete your purchase, you can add your vehicle’s 17-digit VIN to the ‘notes’ section of your order. If you forget, we will contact you to get the necessary information before we program and ship your part.
Will this fix my car’s security system issue?
While this ECM is programmed to match your car’s systems, some GM vehicles require a simple security relearn procedure after installation. This procedure can be done without any special tools and typically takes about 30 minutes. We include instructions to guide you through it.
What if my original part has a different service number?
That’s perfectly fine. GM often uses multiple service numbers for the same part. This 2005-2006 Cobalt ECM is a direct replacement for all compatible service numbers listed in the description, including 12599714, 12589998, and 12605766.
What tools are needed for installation?
Installation is straightforward and typically requires only basic hand tools, such as a socket set and ratchet. The most important first step is to disconnect the vehicle’s battery before you begin.
