Is Your Work Van Down for the Count? Get it Back on the Job Fast.
As a mechanic with over two decades of experience, I know that for an Express 3500 owner, downtime isn’t just an inconvenienceโit’s lost income. When the Engine Control Module (ECM) starts to fail, it can bring your entire operation to a halt. You might be experiencing frustrating symptoms like a no-start condition, erratic idling, poor fuel economy, or a dashboard full of warning lights. These aren’t just minor glitches; they’re signs that the brain of your engine is in trouble.
Expert Pro Tip: Before You Replace
Before installing your new ECM, take 10 minutes to thoroughly clean the main harness connector plugs with a quality electronics cleaner. I’ve seen countless modules get damaged by corrosion or moisture wicked up through the harness. A clean, dry connection is the best insurance for a long-lasting repair. Also, ensure your battery is fully charged and the terminals are spotless.
The Direct Solution: A VIN-Programmed 2016 Express 3500 ECM
Forget towing your van to the dealership and waiting days for a repair. This Engine Control Module is the straightforward, effective solution you need. We take the hassle out of the process. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) after your purchase, and our technicians will program the module with the latest, most stable software directly from GM. It arrives at your door, ready for a plug-and-play installation.
Common Symptoms of a Failing GM ECM:
- โ Check Engine Light is on with communication-related fault codes.
- โ Engine cranks but refuses to start.
- โ Severe performance issues, such as stalling, misfiring, or poor acceleration.
- โ Noticeable drop in fuel efficiency.
- โ Problems with the automatic transmission shifting correctly.
- โ Other modules (like the BCM or TCM) cannot communicate with the ECM.
Simple Installation to Get You Running Again
Installing this module is a job most DIY-savvy owners can handle. While the exact location can vary slightly, on the 2016 Express and Savana vans, you’ll typically find it in the left-hand rear of the engine compartment. No special programming tools are required on your end.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: Find the existing module in your engine bay.
- Disconnect Connectors: Carefully unlatch and remove the main electrical harness connectors. Inspect them for any signs of corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed ECM into place.
- Reconnect Everything: Securely plug the harness connectors back into the new module until they click. Reconnect your battery terminal.
- Final Steps: In some cases, a security or CASE relearn procedure may be necessary, which can be performed with many professional-grade scan tools.
Guaranteed Compatibility and Interchangeability
This module is a direct replacement for a wide range of GM vehicles and part numbers. If your original module has one of the following numbers, this unit is the correct fit for you:
Interchangeable Part Numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, 12692200
Extensive Vehicle Fitment:
While this is the correct 2016 Express 3500 ECM, it also fits many other GM models. Please verify your specific vehicle, engine, and options from the list below:
- Chevrolet Cruze: 2012-2016 (Varies by engine/ID)
- Chevrolet Sonic: 2012-2016 (Varies by engine/ID)
- Chevrolet Trax: 2013-2016
- Chevrolet Spark: 2014-2015 (Gasoline models)
- Chevrolet Volt: 2011-2015
- Chevrolet ELR: 2014-2016
- Chevrolet Express 2500/3500 Van: 2016 (4.8L & 6.0L)
- GMC Savana 2500/3500 Van: 2016 (4.8L & 6.0L)
- Chevrolet Silverado 2500/3500 Pickup: 2012-2016 (6.0L)
- GMC Sierra 2500/3500 & Denali Pickup: 2012-2016 (6.0L)
- Chevrolet Suburban 3500: 2016
- Buick Encore: 2013-2016 (1.4L, Varies by ID/VIN)