Is your 2007 Pontiac G6 or other GM vehicle suffering from frustrating, hard-to-diagnose issues? A persistent Check Engine Light, erratic engine behavior, stalling, or a complete no-start condition can often point directly to a failing Engine Control Module (ECM). As the brain of your vehicle’s engine, when the ECM falters, it can cause a cascade of problems that leave you stranded and facing a costly trip to the dealership. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s reliability and performance.
We offer a dependable and straightforward solution. This is a direct-replacement Engine Control Module, compatible with part number 19210738 and others, that arrives at your door fully programmed to your vehicle’s specific VIN. We handle the complex part for you: simply provide us with your VIN after purchase, and our technicians will flash the module with the latest GM-certified software. This ensures perfect compatibility and restores your engine’s original performance, fuel efficiency, and emissions control without needing any additional programming tools or dealer visits.
A Technician’s Notebook: The Intermittent G6
I remember a 2007 Pontiac G6 that came into my bay with a truly maddening problem. The owner said it would randomly refuse to start, but only after it was warm. No codes, no warning lights during the event. Of course, it started perfectly every time for me. After checking fuel pressure, spark, and grounds until I was blue in the face, I hooked up a scope to the injector command signals. On a hunch, I let the car idle for 45 minutes and then shut it off. When I tried to restart, there was nothing—the injectors weren’t getting the signal to fire. The ECM was failing internally due to heat soak. A replacement, pre-programmed ECM like this one had the car running reliably in under 30 minutes. It’s often these intermittent electronic gremlins that point to the ECM.
Is Your Vehicle Showing These Symptoms?
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Rough or unstable idle.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Automatic transmission shifting erratically or harshly.
- ✔ Failure to pass an emissions test.
A Straightforward Guide to Installation
Replacing the ECM on your G6 or similar GM model is a task many DIYers can handle. For the 2007 G6, the module is typically located in the left-hand (driver’s side) front of the engine compartment. Always consult a repair manual for your specific vehicle’s location.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure all systems are de-energized.
- Locate the ECM: Find the existing Engine Control Module in your engine bay. It will have several large electrical connectors attached to it.
- Disconnect Wiring: Carefully release the locking tabs and unplug the wiring harnesses from the old ECM. Never force the connectors.
- Remove the Old Module: Unbolt the mounting hardware holding the ECM in place and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- Reconnect and Secure: Plug the wiring harnesses firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 15 seconds before starting the engine. This allows the system to recognize the new module. Start the vehicle and check for proper operation.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12589297, 12597121, 12603892, and 19210738. It is guaranteed to fit the following vehicles with the specified options. Please verify your vehicle and engine size before ordering.
Chevrolet: Avalanche 1500 (2007), Corvette (2006-2007), Equinox (2007), Impala (2007, 3.5L/3.9L), Malibu (2007, 3.5L/3.9L), Monte Carlo (2007, 3.5L/3.9L), Silverado 1500/2500/3500 (2007 New Style), Suburban 1500/2500 (2007), Tahoe (2007)
Cadillac: Escalade, Escalade ESV, Escalade EXT (2007)
GMC: Sierra 1500/2500/3500 (2007 New Style), Sierra Denali (2007 New Style), Yukon, Yukon XL 1500/2500 (2007)
Hummer: H2 (2007)
Saturn: Aura (2007, 3.5L)
Frequently Asked Questions
Frequently Asked Questions
How does the VIN programming work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to load the correct, most up-to-date GM software onto the module, ensuring it’s a perfect match for your vehicle’s factory settings and options.
Is any other programming required after I install it?
No. Because we program the module to your VIN before shipping, it is a true plug-and-play solution. In some rare cases, a security or crankshaft position sensor relearn procedure may be needed, which can be done with many common scan tools or by following a simple manual procedure.
Will this fix my specific problem?
This module corrects issues directly caused by a failing ECM, such as the symptoms and diagnostic codes listed above. While it’s a common point of failure, we always recommend a proper diagnosis to confirm the ECM is the root cause before ordering.
Is this compatible with other part numbers?
Yes, this module is a fully compatible replacement for part numbers 12589297, 12597121, and 12603892, in addition to 19210738. It will function identically to the original.