Restore Peak Performance to Your GM 2.2L Engine
Is your Pontiac Sunfire, Chevy Cavalier, or Malibu experiencing frustrating issues like a persistent check engine light, stalling, rough idling, or a complete no-start condition? These are classic symptoms of a failing Engine Control Module (ECM). The ECM is the brain of your vehicle’s engine, managing everything from fuel injection and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that are often misdiagnosed, leading to wasted time and money on unnecessary sensor replacements. This genuine OEM Engine Control Module, part number 19210073 (also interchangeable with 12576162), is the reliable and effective solution to get your vehicle running smoothly again.
From the Diagnostic Bay
We recently had a 2004 Chevy Cavalier towed in that had been to three other shops. The owner had replaced the spark plugs, ignition coils, and even the crankshaft position sensor, but the car would still randomly stall and refuse to restart for hours. After hooking up our diagnostic scanner, we saw intermittent communication loss with the engine computer. A quick check of the wiring confirmed our suspicion: the ECM itself was failing internally. We installed one of these VIN-programmed modules, performed a quick crank relearn, and the car ran perfectly. The customer was thrilled to finally have a reliable car again after chasing the problem for weeks.
Signs You Need a Replacement 2003-2005 Sunfire ECM
A failing engine computer can manifest in various ways. If you’re noticing any of the following symptoms in your vehicle, the ECM is a likely culprit. Don’t let a faulty module keep you off the road.
- ✔ Check Engine Light: The light is on with codes related to module communication (like U-codes) or multiple, unrelated sensor faults.
- ✔ Engine Stalling: Your engine cuts out unexpectedly while driving or when coming to a stop.
- ✔ No-Start Condition: The engine cranks but refuses to start, even with a good battery and fuel supply.
- ✔ Poor Performance: Noticeable loss of power, hesitation during acceleration, and decreased fuel economy.
- ✔ Rough or Erratic Idle: The engine idle speed fluctuates or feels rough and shaky.
- ✔ Harsh Shifting: The automatic transmission may shift erratically or harshly as it’s not receiving correct signals from the ECM.
The Critical Role of VIN Programming
This isn’t just a part; it’s a complete solution. We program this ECM specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This crucial step ensures 100% compatibility and functionality. The programming process loads the latest GM software updates and configures the module for your vehicle’s specific options, engine parameters, and, most importantly, the anti-theft system (GM’s Passlock). A non-programmed module from a junkyard simply will not start your car. We handle the complex programming for you, making the installation process as straightforward as possible.
Vehicle Fitment Information
This ECM is a direct fit for the following vehicles equipped with the 2.2L engine:
- 2003-2005 Pontiac Sunfire (Located in RH rear engine compartment)
- 2003-2005 Chevrolet Cavalier (Located in RH rear engine compartment)
- 2003-2005 Pontiac Grand Am (2.2L only, located in LH center dash)
- 2003-2004 Oldsmobile Alero (2.2L only, located in LH center dash)
- 2004-2005 Chevrolet Malibu (Classic models with VIN N, 2.2L only, located in LH side of dash)
Frequently Asked Questions
Is this ECM ready to install right out of the box?
Yes, it is. We program the module to the VIN you provide, so it will be ready to install and start the vehicle. In some cases, a simple crankshaft position sensor relearn procedure may be required, which can be performed with a basic scan tool or by most local repair shops.
How do I give you my vehicle’s VIN?
After you complete your purchase, please reply to your order confirmation email with your 17-digit VIN. You can also use the contact form on our website and reference your order number. We cannot ship the part until we receive this information.
Is this a new part?
No, this is a high-quality, used OEM part sourced from a salvaged vehicle. Each unit is thoroughly inspected and tested to ensure it is fully functional before being programmed and shipped. This provides the reliability of a genuine GM part at a significant savings.
Will this fix my specific problem?
While this part resolves the vast majority of issues listed, proper vehicle diagnostics are always recommended. If you have confirmed through testing or a professional diagnosis that your ECM has failed, this is the correct solution.
Do I need to send my old part back?
No, there is no core charge or requirement to return your old, faulty module. You can recycle it locally at your convenience.