Is Your 2007 Impala Running Rough? The PCM Might Be the Culprit.
If your 2007 Chevrolet Impala with the 5.3L V8 engine is experiencing frustrating issues like stalling, erratic idling, a persistent Check Engine Light, or a sudden drop in fuel economy, the root cause is often a failing Powertrain Control Module (PCM). This module is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, it can create a cascade of problems that are difficult to diagnose and can make your vehicle unreliable or even undriveable.
This listing is for a genuine, used OEM GM Powertrain Control Module, part number 19210736 (also interchangeable with 12605843). We take the guesswork out of the repair by professionally programming this computer to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module has the correct software and calibrations for your Impala’s specific options and emissions equipment, making the installation process as straightforward as possible.
From the Diagnostic Bay
We had a 2007 Impala SS come into the shop with a complaint that stumped two other mechanics. The car would run perfectly for about 20 minutes, but then it would intermittently lose power and the transmission would shift harshly, sometimes getting stuck in a gear. There were no consistent trouble codes, just a few random communication errors that would come and go. After checking all the wiring and grounds, we focused on the PCM. On a hunch, we monitored the PCM’s internal temperature data. We noticed that as soon as the module reached operating temperature, its sensor readings would start to fluctuate wildly. We swapped in a VIN-programmed 2007 Impala PCM like this one, and the car ran perfectly. The original module had developed an internal fault that only appeared when it got hot, a classic sign of electronic component failure.
Key Features of This 2007 Impala PCM
- ✔ VIN-Programmed Service: We flash this module with the latest GM-approved software updates using your vehicle’s VIN. This ensures compatibility and proper function right out of the box.
- ✔ Cost-Effective Solution: Get the reliability of an original equipment part without the high cost of a new module from the dealership.
- ✔ OEM Quality: This is a used, genuine GM part, ensuring the same fit, form, and function as the original unit in your vehicle.
- ✔ Broad Compatibility: While a perfect match for the Impala 5.3L, this versatile E38 ECM fits a wide range of 2007 GM vehicles, making it a reliable and tested component.
Common Symptoms of a Failing Engine Computer
- ✔ Check Engine Light is on with various or no specific codes.
- ✔ Engine stalling or shutting off while driving.
- ✔ Rough or inconsistent idling.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle won’t start, even with a good battery and starter.
- ✔ Misfire codes (like P0300) that don’t resolve with new plugs or coils.
- ✔ Loss of communication with the diagnostic scan tool.
Replacing a faulty engine computer can seem intimidating, but our pre-programming service simplifies the process significantly. By providing us with your VIN after purchase, you receive a module that is ready to be installed and integrated into your vehicle’s electronic systems. In most cases, after installation, you will only need to perform a simple security relearn procedure, which can often be done without special tools.
Wide-Ranging GM Compatibility
This electronic control module, part number 19210736, is a workhorse in the GM family. It is the correct service part for many 2007 models, including but not limited to:
- Acadia (ID 19210736)
- Aura (2.4L, 3.6L)
- Cobalt (2.4L)
- CTS (V-Series)
- DTS
- G5 (2.4L)
- G6 (2.4L, 3.6L)
- Grand Prix (5.3L)
- HHR (2.4L)
- Impala (5.3L)
- Lucerne (4.6L)
- Monte Carlo (5.3L)
- Outlook
- Sky (2.4L)
- Solstice (2.4L)
- SRX (4.6L)
- STS (4.4L, 4.6L)
- And many more…
Please verify the part number on your original module to ensure a perfect match. Your purchase is for a used computer sourced from a salvaged vehicle, tested for functionality, and programmed specifically for you.
Frequently Asked Questions
What is the difference between a PCM and an ECM?
ECM (Engine Control Module) and PCM (Powertrain Control Module) are often used interchangeably. Technically, an ECM controls only the engine, while a PCM controls both the engine and the transmission. For this 2007 Impala and most modern vehicles, this unit is a PCM as it manages both systems.
Is this part ready to install out of the box?
Yes, it is. We program the computer with your vehicle’s VIN and the latest GM software before shipping. This means it’s ready to be physically installed. However, you will likely need to perform a security/anti-theft relearn procedure so the car will start. This procedure can typically be done without special tools and instructions are readily available online.
Where is the PCM located on my 2007 Impala 5.3L?
On the 2007 Impala with the 5.3L V8 engine, the PCM is typically located in the lower part of the air cleaner box assembly in the engine bay. It’s a silver metal box with several large electrical connectors.
What happens if I don’t provide my VIN?
We cannot ship the module until we receive your VIN. The programming is the most critical part of this service. Without your VIN, the computer will not have the correct software to communicate with the other modules in your vehicle, and your car will not run correctly, if at all.
Do I need to have a mechanic perform any other procedures after installation?
In addition to the security relearn, some vehicles may require a Crankshaft Position Sensor Relearn (also known as a CASE relearn). This procedure requires a high-level scan tool and is necessary to prevent a P0315 trouble code. We recommend checking with your local trusted mechanic about this possibility.
Why buy a used OEM computer?
A used, genuine OEM (Original Equipment Manufacturer) computer offers the best of both worlds. It provides the proven reliability and perfect compatibility of a part designed by GM specifically for your vehicle, but at a fraction of the cost of a brand new unit from a dealership.