2007 – 2010 Chevrolet COBALT Powertrain Control Module (PCM) 12635902 – Programmed to Your VIN
Key Features & Benefits
As a seasoned automotive repair advisor with over two decades in diagnostics and parts, I’ve seen how a reliable PCM can transform vehicle performance. This pre-programmed Powertrain Control Module (part number 12635902) is tailored specifically for your 2007-2010 Chevrolet Cobalt. We flash it with the latest GM updates using your VIN, ensuring seamless integration and optimal engine management. This isn’t just a replacement—it’s a direct solution that restores fuel efficiency, smooth idling, and responsive acceleration.
Key advantages include compatibility with service numbers like 12612397, 12594750, 12597125, 12629019, and 12611549. It fits various engine configurations, such as the 2.2L (VIN F or H) or 2.4L (VIN B), without hybrid options. Customers often report better throttle response and reduced emissions after installation, making it ideal for daily drivers facing rough starts or erratic shifting.
- VIN-specific programming for exact match
- Latest GM software flashes to address known glitches
- Enhances engine timing and fuel injection precision
- Supports models like Cobalt, Malibu, and HHR for broader applicability
Common Issues & How This Fixes Them
Imagine starting your 2007 Chevrolet Cobalt on a cold morning, only to face a stubborn no-start condition or the check engine light glaring back. From my experience, faulty PCMs in these models often trigger symptoms like misfires, poor fuel economy, or transmission hesitation. Common culprits? Corrosion from moisture exposure or electrical surges that corrupt the module’s internal programming.
This programmed PCM resolves these by recalibrating sensors and actuators. For instance, if you’re dealing with erratic idle speeds—perhaps during stop-and-go traffic—it resets the adaptive learning, stabilizing RPMs. I’ve helped owners who noticed sluggish acceleration on highways; replacing with this unit cleared the issues, restoring power delivery.
Expert tip: Scan for DTCs like P0601 (internal control module memory error) or P0171 (system too lean). This part often eliminates them by providing fresh, updated firmware. Another scenario: If your Cobalt stalls intermittently, especially under load, the new module optimizes ignition timing, preventing those frustrating breakdowns.
In real shops, we’ve seen these fixes save on costly diagnostics. Pair it with a battery check to avoid voltage-related failures.
Easy Installation Guide
Swapping the PCM in your 2007-2010 Cobalt is straightforward for DIY enthusiasts or pros. Located in the left front engine compartment, it’s accessible with basic tools. Disconnect the battery first to prevent shorts, then remove the old unit by unplugging connectors and unbolting it—usually just a few screws.
- Provide your VIN post-purchase for programming.
- Locate the module (LH front engine bay).
- Disconnect negative battery terminal.
- Unplug harnesses carefully; note positions.
- Install the new PCM, reconnect, and reset adaptations via scan tool.
Pro advice: After installation, drive a few cycles to let the system relearn. If codes persist, double-check grounds. This process typically takes under an hour, getting you back on the road quickly.
Fitment Details
This PCM is engineered for precise fit in 2007-2010 Chevrolet Cobalt models, including those with 2.2L or 2.4L engines. It also extends to compatible vehicles like the Pontiac G5 (2007-2010), Saturn Ion, or Chevy HHR (2007-2011) with similar specs. Always verify your engine VIN digit for accuracy—such as VIN F for 2.2L or B for 2.4L.
Compatible with:
- 2007-2010 Chevrolet Cobalt
- Other GM models like Malibu (2007-2012, 2.2L/2.4L), G6 (2008-2010), and more as listed
Verify part numbers; provide VIN for confirmation. Don’t let a failing module sideline your Cobalt—order now and experience reliable performance. With my background, I recommend this for anyone troubleshooting engine control woes; it’s a proven fix that boosts drivability and peace of mind.