Restore Peak Performance to Your GM Vehicle
Is your Chevrolet Express, Silverado, or other compatible GM vehicle suffering from frustrating and costly engine problems? An illuminated check engine light, poor fuel economy, stalling, or a no-start condition often points to a failing Engine Control Module (ECM). This vital component is the brain of your engine, controlling everything from fuel injection and ignition timing to emissions systems. When it falters, the entire vehicle’s performance and reliability are compromised. This replacement ECM, part number 22819494, is the definitive solution to get your vehicle running like new again.
From the Diagnostic Bay
We had a 2016 Express 3500 work van come into the shop with a list of complaints as long as your arm. The driver reported intermittent stalling at stoplights, a constant check engine light with a handful of seemingly unrelated codes (O2 sensor, misfire, MAP sensor), and terrible fuel mileage. The owner had already spent hundreds replacing sensors with no improvement. After hooking up our diagnostic scanner and monitoring live data, we noticed erratic readings from the ECM. The module itself was failing, sending incorrect signals and causing a cascade of phantom issues. We installed a VIN-programmed ECM just like this one, and it was like a new van. All the codes cleared, the engine idled smoothly, and the owner called back a week later to thank us for finally solving the problem and saving his fuel budget.
Is Your ECM Failing? Common Symptoms
- ✔ Persistent Check Engine Light that won’t clear or returns with various codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Rough or erratic idling.
- ✔ Transmission shifting problems or harsh shifts.
- ✔ Failure to pass state emissions testing.
The Perfect Solution: A VIN-Programmed 2016 Express 3500 ECM
Don’t waste time and money at a dealership on expensive diagnostics and programming fees. We simplify the repair process. When you purchase this module, you provide us with your vehicle’s VIN. Our technicians will then program the ECM with the latest, most up-to-date software directly from GM, ensuring it is perfectly matched to your vehicle’s specific configuration. This makes installation a straightforward, plug-and-play process for you or your mechanic. This isn’t just a replacement part; it’s a comprehensive solution designed to restore your vehicle’s factory performance and reliability.
This module is a direct replacement for a wide range of GM vehicles and corresponds to multiple part numbers, including 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200. Please verify your original part number to ensure a perfect match for your application.
Frequently Asked Questions
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) contains critical information about your vehicle’s specific options, engine, transmission, and emissions systems. We use the VIN to load the exact GM-certified software onto the ECM, ensuring it communicates perfectly with all other modules in your vehicle. This step is essential for a true plug-and-play installation and avoids a costly trip to the dealer for programming.
Is any additional programming required after installation?
In most cases, no. Because the unit arrives pre-programmed to your VIN, it is ready to be installed. However, some vehicles may require a simple security relearn procedure (often called a CASE relearn or anti-theft relearn) which can typically be done without special tools. Instructions are widely available online for this procedure.
How do I find my original part number?
Your ECM’s part number is printed on a sticker directly on the module’s case. It is typically a silver or white sticker with the GM logo and a long series of numbers. You will need to locate the ECM in your vehicle (often in the engine bay or under the dashboard) to read this number and confirm compatibility.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty ECM, this part is the correct solution. It’s crucial to ensure that the underlying issue isn’t a separate failed sensor or wiring problem. However, a failing ECM is a very common cause for persistent and multiple engine codes.
Can I drive with a failing ECM?
It is not recommended. A failing ECM can lead to unpredictable engine behavior, such as stalling in traffic, which is a significant safety hazard. It can also cause damage to other components, like the catalytic converter, leading to much more expensive repairs down the road.