Is Your Work Van Off the Road? Get It Running Right.
As a mechanic with over two decades of experience, I know that for an Express 2500 owner, downtime isn’t just an inconvenienceโit’s lost income. When your van starts acting up with baffling electrical gremlins, a persistent Check Engine Light, or a no-start condition that leaves you stranded, the Engine Control Module (ECM) is often the culprit. This isn’t just a part; it’s the brain of your vehicle’s operation, and when it fails, everything grinds to a halt.
We’re offering a direct-fit, reliable solution: a replacement Engine Control Module for your 2016 Chevy Express 2500. The best part? We handle the most critical step for you. Before this module ever leaves our facility, we program it with the latest GM-certified software, specifically matched to your van’s unique Vehicle Identification Number (VIN). This means no expensive trips to the dealership for programming and no complex diagnostic tools required on your end. It’s a true plug-and-play fix designed to get you back to work.
Common Symptoms of a Failing 2016 Express 2500 Engine Control Module
A faulty ECM can manifest in ways that often get misdiagnosed, costing you time and money on parts you don’t need. Over the years, I’ve seen hundreds of these GM vehicles in my bay. Here are the classic signs that point directly to a failing computer:
- โ Check Engine Light: The light is on, and you may have codes related to module communication (U-codes) or multiple, unrelated sensor faults.
- โ No-Start or Intermittent Stalling: The engine cranks but won’t fire up, or it dies unexpectedly while driving, especially after warming up.
- โ Poor Engine Performance: You might experience rough idling, hesitation on acceleration, reduced power, and a noticeable drop in fuel economy.
- โ Transmission Issues: The ECM also communicates with the transmission controller, so a failing module can cause harsh shifting or erratic gear changes.
Expert Pro Tip: Check Your Connections First
Before you swap the module, take a moment to inspect the ECM’s electrical connectors. I’ve seen cases where a simple cleaning of the pins with a quality electronics cleaner and ensuring a snug fit was all that was needed. Corrosion from moisture or a loose connection can mimic a complete module failure. Itโs a 5-minute check that could save you a lot of hassle.
Plug-and-Play Installation: No Dealer Visit Required
Installing your newly programmed ECM is a straightforward process that you can do right in your driveway or shop. We’ve taken care of the complex software side, so you can focus on the simple mechanical swap.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge.
- Locate the ECM: On the 2016 Express Van, the Engine Control Module is typically found in the left-hand (driver’s side) rear of the engine compartment.
- Disconnect the Old Module: Carefully release the locking tabs on the electrical harness connectors and pull them straight out. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed module into place. Firmly reconnect the electrical harnesses, ensuring they click and lock securely.
- Reconnect and Start: Reattach the negative battery terminal. Your vehicle is now ready to start with the latest software and correct VIN information. In some cases, a throttle body relearn procedure may be required, which can typically be done without special tools.
Guaranteed Compatibility and Quality
This module is a direct replacement for a wide range of GM vehicles and part numbers. We guarantee it will function correctly if your vehicle is on the list below and your original part number is a match. Simply provide us with your VIN upon purchase, and we’ll ensure a perfect software match.
Replaces Part Numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, 12692200
Partial Fitment List:
- Chevrolet Express 2500/3500 & GMC Savana 2500/3500 (2016): 4.8L & 6.0L Engines
- Chevrolet Silverado 2500/3500 & GMC Sierra 2500/3500 (2012-2016): 6.0L Engine
- Chevrolet Cruze (2012-2016): Various engines, check IDs
- Chevrolet Sonic (2012-2016): Various engines, check IDs
- Chevrolet Trax (2013-2016)
- Buick Encore (2013-2016)
- Cadillac ELR (2014-2016)
- Chevrolet Volt (2011-2015)
- …and more. Please use the compatibility tool to confirm your specific vehicle.