Get Your Van Back on the Road, Fast.
When the Engine Control Module (ECM) in your Chevy Express fails, it’s more than an inconvenience—it’s downtime that costs you time and money. A faulty ECM can cause a cascade of frustrating issues, from a persistent check engine light to a van that won’t start at all. This pre-programmed ECM is the definitive, reliable solution to get your workhorse running like new again, without the exorbitant costs and delays of a dealership visit.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing ECM is the likely culprit. This module is the correct fix for:
- Check Engine Light (CEL) with various Diagnostic Trouble Codes (DTCs)
- Engine stalling, stuttering, or misfiring
- No-start or hard-start conditions
- Poor engine performance and reduced power
- Decreased fuel economy
- Erratic transmission shifting
Don’t let a bad computer sideline your vehicle. Installing our professionally programmed 2010-2015 Express 3500 ECM restores communication between your engine’s critical systems, resolving these problems and returning your van to factory-spec operation.
Expert Insight: The Brain of Your Operation
Think of the ECM as the central command center for your engine. It processes hundreds of signals every second to manage everything from fuel injection and ignition timing to emissions control. When you install a generic, non-programmed module, it’s like giving your engine a brain with amnesia. It doesn’t know your vehicle’s specific options, security system, or operational parameters. That’s why we insist on programming every module to your specific VIN. This crucial step ensures all systems communicate flawlessly from the moment you turn the key, preventing a host of new problems and guaranteeing a successful, long-lasting repair.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: This ECM arrives at your door flashed with the latest GM software updates, specifically matched to your van’s VIN. This eliminates the need for expensive on-vehicle programming.
- ✔ Plug & Drive Installation: Because the programming is done beforehand, installation is straightforward. In most cases, you can install it and get back on the road immediately.
- ✔ Restores Peak Performance: A correctly functioning ECM ensures your engine operates at optimal efficiency, restoring lost power and fuel economy.
- ✔ Cost-Effective Solution: Get the right part, programmed and ready to install, for a fraction of the cost of a new module from the dealership.
- ✔ Broad GM Compatibility: While perfect for the 2010-2015 Express 3500 ECM replacement, this unit also fits a wide range of GM trucks, vans, and performance vehicles. Please verify your part number (12633238 or 12633055) and check the fitment list.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Frequently Asked Questions
Is this ECM ready to install out of the box?
Yes. After you place your order, you must provide us with your vehicle’s VIN. We will program the module with the latest GM software specific to your vehicle before shipping it. This makes it ready for installation upon arrival.
Where do I provide my VIN?
After completing your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive and program the module with this information.
Will this fix my check engine light?
If the check engine light and associated codes are caused by a faulty ECM, this part will resolve the issue. However, it’s crucial to ensure you have properly diagnosed the problem, as other failing sensors or components can also trigger a check engine light.
What if my original ECM has a different part number?
This computer is a direct replacement for part numbers 12633238 and 12633055. Please check the extensive fitment list provided on this page to confirm compatibility with your specific make, model, and engine option.
Is any other programming or security relearn needed after installation?
In most GM vehicles of this era, the module is plug-and-play once programmed to the VIN. However, some models may require a simple security relearn procedure (often called a key relearn or anti-theft relearn), which can typically be done without special tools. Instructions for this procedure are widely available online.