Is Your Chevrolet Impala Running Rough? The Problem Could Be Its Brain.
If your 2006 Impala is experiencing frustrating issues like stalling, poor fuel economy, misfires, or a persistent Check Engine Light, the culprit is often the Engine Control Module (ECM). As the central computer of your vehicle, the ECM manages everything from fuel injection and spark timing to transmission shifting and emissions control. When it begins to fail, it can cause a wide range of perplexing and performance-robbing problems. Don’t let a faulty computer keep you off the road. This is the direct, reliable solution you need.
The Simple Solution: A VIN-Programmed 2006 Impala Engine Module
Replacing an ECM isn’t just about swapping hardware. The module must be correctly programmed with your vehicle’s specific Vehicle Identification Number (VIN) and loaded with the latest factory software to function correctly. This process typically requires an expensive trip to a dealership. We eliminate that hassle. When you purchase this module, we handle the programming for you. Simply provide us with your VIN during checkout, and our technicians will flash the unit with the newest, most stable updates from GM. It will arrive at your door ready for installation, saving you time, money, and the headache of coordinating with a repair shop for programming.
From the Diagnostic Bay
We had a 2006 Impala 3.5L come in that was driving the owner crazy. It had a random, intermittent misfire on cylinder 3 that wouldn’t go away. The owner had already replaced the spark plug, ignition coil, and even the fuel injector for that cylinder, but the P0303 code kept coming back. After checking wiring and compression, we hooked up our diagnostic scanner and monitored the injector pulse width command from the ECM. We noticed the command for cylinder 3 was erratic compared to the others. We swapped in one of our pre-programmed ECMs, performed the security relearn, and the misfire was gone instantly. The original ECM’s internal driver for that injector was failing—a classic case where the computer itself was the root cause.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns immediately.
- ✔ Engine stumbling, hesitating, or stalling for no apparent reason.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or erratic idling.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Automatic transmission shifting harshly or at the wrong times.
- ✔ Communication errors with diagnostic scan tools.
Guaranteed Compatibility
This Engine Control Module is a direct replacement for a wide range of General Motors vehicles and is interchangeable with several service numbers. Please verify your part number against the list below to ensure perfect compatibility.
Replaces Part Numbers: 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, 19210737
While this is a perfect solution for your 2006 Impala Engine Module, it also fits dozens of other vehicles including the Pontiac G6, Chevy Trailblazer, Cadillac DTS, and more. Refer to the detailed fitment list to confirm this part is right for your specific car or truck.
Frequently Asked Questions
Do I need to take this module to a dealer for programming?
No. We handle all the programming before we ship the part to you. We use your VIN to load the latest GM-specified software, so it’s ready for installation right out of the box.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot program and ship your module without it, so please provide it promptly to avoid delays.
Is installation difficult?
For most models, the ECM is in an accessible location (often in the engine bay near the air filter box or on the firewall). It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. After installing the new one, you may need to perform a simple security relearn procedure, which can usually be done without special tools.
What is a security relearn procedure?
This is a process that syncs the new ECM with your vehicle’s anti-theft system. A common GM procedure involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating this two more times. We include general instructions to guide you.
How can I be sure my old ECM is the problem?
While the symptoms listed are strong indicators, it’s always best to have a proper diagnosis performed. This includes checking for trouble codes, verifying power and ground to the ECM, and ruling out other components like sensors or wiring issues.