Restore Peak Performance to Your GM Vehicle
Is your 2007 Impala or other GM vehicle suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or a sudden drop in fuel economy? These are classic signs of a failing Engine Control Module (ECM), the computer that acts as your vehicle’s brain. A faulty ECM can make your car unreliable and unsafe. This replacement 2007 Impala Engine Control Module is the definitive solution, arriving at your door pre-programmed with the latest GM software specifically for your car’s Vehicle Identification Number (VIN).
Forget about expensive dealership visits and the hassle of towing your vehicle for programming. We handle the critical software flashing process before we ship, making the installation as straightforward as possible for both professional technicians and capable DIYers. By providing us with your VIN at checkout, you ensure this module communicates perfectly with your vehicle’s systems right out of the box, restoring original performance and efficiency.
Case Study: A Tricky Diagnosis
I remember a 2007 Chevy Impala 3.9L that came into my shop with a complaint of intermittent stalling at stoplights and a check engine light that would come and go. The owner had already replaced the spark plugs and an O2 sensor with no luck. My scan tool pulled a P0606 (ECM Processor Fault) and a few other seemingly unrelated communication codes. After verifying the wiring and grounds were solid—a common first step—I knew the ECM itself was the culprit. The internal processor was failing intermittently. We replaced it with a pre-programmed module just like this one. The installation and security relearn took less than 30 minutes. The car ran perfectly, the codes never returned, and the customer was thrilled to have a reliable car again without a massive dealership bill.
Common Signs of a Failing ECM
If the central computer of your vehicle is failing, it can cause a wide array of problems. Here are some of the most common symptoms to watch for. If you’re experiencing several of these, it’s highly likely your ECM is the issue.
- ✔ Check Engine Light is illuminated (often with codes like P0601, P0602, P0606)
- ✔ Engine stalling or misfiring unpredictably
- ✔ Vehicle won’t start at all (no-crank or crank-no-start)
- ✔ Noticeable decrease in fuel mileage
- ✔ Poor or hesitant engine performance and acceleration
- ✔ Automatic transmission shifting issues or harsh shifts
- ✔ Communication errors with other vehicle modules (U-codes)
A Straightforward Guide to Installation
Installing your new 2007 Impala Engine Control Module is a manageable job for anyone with basic tools. For the 2007 Impala, the ECM is conveniently located in the lower part of the air cleaner box.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On your Impala, open the hood and find the air cleaner assembly. The ECM is situated in the lower section of this housing.
- Disconnect the Connectors: Carefully unclip and disconnect the large electrical wiring harnesses from the old ECM. These connectors have locking tabs that need to be released before pulling.
- Remove the Old Module: Unbolt or unclip the old ECM from its mounting position within the air cleaner box and remove it from the vehicle.
- Install the New Module: Place the new, pre-programmed ECM into the mounting position and secure it. Reconnect the wiring harnesses, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: A simple vehicle anti-theft system (VATS) relearn is required. Turn the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds. Repeat this cycle two more times (for a total of 3 cycles / 30 minutes). Your vehicle should now start and run correctly.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12589297, 12597121, 12603892, and 19210738. It is guaranteed to fit the following makes and models with the specified options:
- Chevrolet Avalanche 1500 (2007)
- Chevrolet Corvette (2006-2007)
- Chevrolet Equinox (2007)
- Chevrolet Impala (2007) – 3.5L & 3.9L
- Chevrolet Malibu (2007) – 3.5L & 3.9L
- Chevrolet Monte Carlo (2007) – 3.5L & 3.9L
- Chevrolet Silverado/Sierra 1500, 2500, 3500 (2007 New Style) – Check engine options
- Chevrolet Suburban/GMC Yukon XL 1500 & 2500 (2007)
- Chevrolet Tahoe/GMC Yukon (2007)
- Cadillac Escalade, ESV, EXT (2007)
- GMC Sierra Denali (2007 New Style)
- Hummer H2 (2007)
- Pontiac G6 (2007) – 3.5L & 3.9L
- Pontiac G8 (2008) – 6.0L
- Pontiac Torrent (2007)
- Saturn Aura (2007) – 3.5L
Do I need to have this module programmed by a dealer?
Do I need to have this module programmed by a dealer?
No. We professionally program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready for installation, saving you time and money.
Why do you need my VIN?
The Vehicle Identification Number (VIN) contains critical information about your car’s factory options, engine, transmission, and emissions systems. We use it to load the exact GM-certified software your vehicle requires for optimal performance and to ensure all systems communicate correctly.
Is the installation difficult? Do I need special tools?
For most models, installation is straightforward and requires only basic hand tools like a socket set. The most important step after installation is the security relearn procedure, which does not require any special tools. Our installation guide provides the simple steps to follow.
Will this fix my check engine light?
If your check engine light is on due to an internal ECM failure (common codes P0601-P0606), then this part will resolve the issue. However, it’s always best to have your vehicle properly diagnosed to confirm the ECM is the root cause, as other faulty sensors can also trigger a check engine light.
Is this module the same as an ECU or PCM?
Yes. The terms Engine Control Module (ECM), Engine Control Unit (ECU), and Powertrain Control Module (PCM) are often used interchangeably. This is the main computer that controls your vehicle’s engine functions.