Restore Peak Performance to Your Chevrolet Impala
Is your 2010 or 2011 Chevrolet Impala running rough, displaying a check engine light, or failing to start? These are common indicators of a failing Powertrain Control Module (PCM), the central computer responsible for managing your vehicle’s engine and transmission performance. A malfunctioning PCM can lead to a cascade of issues, from poor fuel economy and erratic shifting to a complete no-start condition. This replacement PCM, part number 12629019, is the definitive solution to get your vehicle back on the road, running as the manufacturer intended.
This unit is not just a part; it’s a comprehensive solution. We pre-program the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures that the computer has the latest GM software updates and is perfectly matched to your car’s factory settings, including engine, transmission, and emissions equipment. This eliminates the need for expensive dealership programming, making installation straightforward for you or your trusted mechanic.
From the Diagnostic Bay
We once had a 2011 Impala towed in with a classic no-start, no-communication issue. The owner had already replaced the battery and checked all the fuses. Another shop had even suggested a costly fuel pump replacement. After hooking up our professional scan tool, we found no communication with the engine computer. By checking the power, ground, and data lines at the PCM connector, we confirmed the module itself was the culprit. A new, programmed PCM had the car starting on the first try. It’s a powerful reminder that what seems like a complex mechanical issue can often be traced back to the vehicle’s central brain.
Symptoms of a Failing 2010-2011 Impala PCM
If you’re experiencing any of the following issues, a faulty engine computer could be the root cause. Proper diagnosis is key, but these symptoms are strongly associated with PCM failure:
- ✔ Unexplained Check Engine Light (CEL) illumination, often with communication error codes (e.g., U-codes).
- ✔ Engine stalling, stumbling, or misfiring while driving.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A complete no-start condition where the engine cranks but won’t turn over.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Failure to pass state emissions testing.
- ✔ Intermittent issues that are difficult to replicate, often worsening as the engine warms up.
The Importance of VIN Programming
A PCM is not a one-size-fits-all component. Each module must be calibrated for the specific vehicle it’s installed in. Our process ensures this compatibility. When you provide your VIN, we flash the module with the correct GM-certified software for your Impala’s specific configuration. This guarantees seamless integration with your vehicle’s other electronic systems, such as the anti-lock brakes (ABS), body control module (BCM), and anti-theft system (PassLock/PassKey). After installation, a simple security relearn procedure may be required, which can typically be done without special tools.
This module is a direct replacement for multiple service numbers, including 12597125, 12629019, 12612397, 12594750, 12635902, and 12611549, and fits a wide range of GM vehicles beyond the Impala. Please verify the part number on your original module to ensure compatibility.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it to you. This means it arrives ready for installation, saving you a trip to the dealership and additional programming fees.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We cannot ship your part until we have this information to perform the necessary programming.
Is any special procedure needed after installation?
In many cases, a security relearn procedure (also known as a CASE relearn or anti-theft relearn) will be necessary. This synchronizes the new PCM with your vehicle’s anti-theft system. This procedure can typically be performed by the owner and does not require a special scan tool. Instructions are widely available online or in service manuals.
How do I find my original part number?
Your vehicle’s original PCM is typically located in the engine bay, often attached to the air filter box. The part number is printed on a sticker on the module’s case. It will be a long number, often starting with ’12’.
Will this fix my transmission shifting problems?
The PCM controls both the engine and the transmission. If your shifting issues are caused by faulty electronic signals from the computer, this replacement module is the correct solution. However, mechanical issues within the transmission itself will not be resolved by replacing the PCM.