Get Your Work Van Back on the Road, Fast.
When your 2016 Chevrolet Express 3500 is sidelined with engine trouble, every moment of downtime costs you. A faulty Engine Control Module (ECM) can cause a host of frustrating issues, from a simple check engine light to a no-start condition that brings your business to a halt. This replacement ECM is the reliable, straightforward solution to get your workhorse back in service. It arrives at your door programmed with the latest official GM software, specifically matched to your vehicle’s VIN. This eliminates the need for expensive dealership programming, saving you both time and money.
Common Symptoms & Your Solution
If your van is experiencing any of the following, a failing computer is a likely culprit. This programmed 2016 Express 3500 ECM is the definitive solution for issues such as:
- Check Engine Light (CEL) that won’t go away
- Engine stalling or stumbling unexpectedly
- Rough or erratic idling
- Noticeable decrease in fuel economy
- Transmission shifting problems
- Vehicle won’t start, despite a good battery and starter
- Communication error codes (U-codes) stored in the system
Features & Benefits
- ✔ VIN-Programmed for Your Van: No expensive dealer trips for programming. We flash the unit with the latest GM software using your VIN, ensuring it’s ready for installation right out of the box.
- ✔ Restores Peak Performance: Corrects issues like poor fuel economy, erratic shifting, and rough idling caused by a faulty computer.
- ✔ Direct-Fit Replacement: Engineered to match OEM specifications for part number 12663405 and other compatible numbers, guaranteeing a perfect fit and function.
- ✔ Eliminate Guesswork: Solves frustrating electrical gremlins and communication error codes that can be difficult to diagnose.
- ✔ One-Year Warranty Coverage: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
A Technician’s Insight: As a tech with over 20 years on the floor, I’ve seen countless work vans come in with ‘mystery’ problems that all trace back to a failing ECM. It’s the brain of your entire powertrain. A simple swap isn’t enough; proper VIN-specific programming is crucial for the engine, transmission, and anti-theft systems to communicate correctly. Our process ensures all systems integrate perfectly, just like the original, getting you back to work without a hitch.
This ECM is a crucial component for the operation of your vehicle. By ordering our pre-programmed 2016 Express 3500 ECM, you are choosing the most efficient path to a reliable repair. We handle the complex programming so you can focus on the installation and getting your vehicle back to earning its keep.
Frequently Asked Questions
Do I need to do any programming myself?
No. This ECM comes fully programmed to the VIN you provide during checkout. It is ready to be installed upon arrival. In some cases, a simple security or CASE relearn procedure may be required with a capable scan tool after installation, which is a standard step for many vehicle repairs.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part without it. This ensures the module has the correct software for your van’s specific options.
Where is the ECM located on my 2016 Express 3500?
On the 2016 Express and Savana vans, the Engine Control Module is typically located in the engine compartment on the left-hand (driver’s) side, often near the battery or firewall.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM, this part will resolve the issue. It is essential to have the codes scanned before ordering to confirm the problem is related to the computer and not another sensor or component.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit is verified to be fully functional before being programmed and shipped, providing OEM-level reliability.