2009-2010 G3 ECM 12621466 | Programmed to Your VIN | Engine Computer PCM

### Programmed 2009-2010 Pontiac G3 ECM \| 12621466 \| Plug & Drive   ## Restore Your Pontiac’s Performance and Reliability Is your Pontiac G3 running rough, stalling unexpectedly, or showing a persistent check engine light? A faulty Engine Control Module (ECM) is often the hidden cause of these frustrating and unpredictable issues, turning your daily drive into a constant source of stress. Get back on the road with confidence with this fully programmed, direct-fit replacement **2009-2010 Pontiac G3 ECM**, designed to restore your vehicle’s original performance and dependability. ### Common Symptoms & Your Solution A failing ECM can manifest in various ways, often mimicking other component failures. If you’re experiencing any of the following, this module is your definitive solution: - Unexpected stalling or engine shut-off while driving - Rough or erratic idling - Noticeable decrease in fuel economy - Engine misfires or hesitation during acceleration - Difficulty or failure to start the engine - Check Engine Light with communication error codes (like P0601, P0606) This isn’t just a replacement part; it’s a complete, hassle-free fix. We pre-program this genuine GM ECM specifically to your vehicle’s VIN, ensuring it arrives ready for a straightforward installation. This critical service eliminates the need for expensive dealership programming or specialized tools, saving you significant time and money. ### Features & Benefits - ✔ **VIN-Programmed for Your G3:** We flash the module with the latest GM software updates using your vehicle’s unique VIN. This ensures perfect compatibility and optimal performance right out of the box. - ✔ **Plug-and-Play Installation:** No complicated programming or dealership visits required. This module is designed for a direct, hassle-free installation, getting you back on the road faster. - ✔ **Restores Peak Performance:** Corrects common issues like rough idling, poor fuel economy, and hesitation, restoring your vehicle’s original drivability and efficiency. - ✔ **Broad GM Compatibility:** Guaranteed to work with part numbers **12679199**, **12642927**, **12636386**, **12621466**, and **12630789**, making it a versatile solution for many GM compacts. - ✔ **One-Year Warranty:** This unit is backed by our one-year replacement warranty, giving you complete peace of mind with your purchase. > #### Expert Insight: The Diagnostic Dead End > > From our 20+ years of hands-on experience, we’ve seen countless drivers chase expensive sensor and ignition part replacements, only to find the root cause was a failing ECM. A classic sign is a ‘no communication’ error with a diagnostic scanner or a cluster of random, unrelated trouble codes. This pre-programmed **2009-2010 Pontiac G3 ECM** solves the problem at its source, preventing further diagnostic headaches and unnecessary expenses. ### Frequently Asked Questions **Do I need to get this programmed by a dealer?** No. This is the core benefit of our service. We program the ECM to your vehicle’s specific VIN before we ship it. It will arrive ready for installation, requiring no further programming. **How do I provide my VIN?** After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information, as it’s essential for the programming process. **Is this a difficult part to install?** For someone with basic mechanical skills, the installation is typically straightforward. The ECM is usually located in the engine bay and is held in by a few bolts and has several electrical connectors. We always recommend disconnecting the battery before starting. If you are not comfortable, a professional mechanic can perform the swap quickly. **Will this fix my specific check engine light codes?** This **2009-2010 Pontiac G3 ECM** is a direct solution for internal module failure codes, such as P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault). It can also resolve a wide range of other codes that are triggered by a faulty main computer. **What does the warranty cover?** This unit is backed by our one-year replacement warranty. This covers the part itself against any defects for one full year from the date of purchase, providing you with security and confidence in your repair. Please enter it in the payment notes and save to ensure we receive it. Orders without a VIN within our 2-business-day handling period may be canceled, as programming cannot proceed without it. ### Shipping - **Processing Time:** Reliably shipped within 2-3 business days. ### Warranty Enjoy peace of mind with a **one-year replacement warranty** on this part, effective from the date you receive it. Labor costs are not covered. If the part fails within the warranty period, we’ll replace it with a comparable unit or refund your purchase price, ensuring a hassle-free experience. **Return Address:** **Highway71autoparts** **9131 Highway 71 NE** **Spicer, MN, 56288**

• Manufacturer Part Number: 12621466
• Country/Region of Manufacture: United States
• Manufacturer Warranty: 1 Year
• Superseded Part Number: 12621466, 12630789, 12636386, 12642927, 12679199
• Conditions & Options: Programmed to your VIN GM: 12621466
• Genuine OEM: Yes
• Interchange Part Number: 590-01738
• Model: G3
• Make: CHEVROLET
• Year: 2009, 2010, 2011
• Brand: GM
• MPN: 12642927