Restore Your Van’s Performance and Reliability
Is your 2016 Savana 3500 Van experiencing frustrating issues like stalling, rough idling, a persistent check engine light, or a complete no-start condition? These are classic signs of a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can cripple a reliable workhorse. It’s the brain of your engine, and when it malfunctions, it can lead to incorrect fuel mixtures, erratic shifting, and poor engine performance, costing you time and money.
This isn’t just a replacement part; it’s a complete solution. We provide a genuine OEM-quality Engine Control Module that comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates perfectly with your van’s engine, transmission, and other systems, right out of the box. By flashing it with the latest GM software updates, we help resolve issues caused by outdated factory programming, restoring optimal fuel efficiency and engine operation. Getting a reliable 2016 Savana 3500 ECM is crucial for keeping your business on the road.
Case Study: The Intermittent No-Start on a Work Van
I once had a 2016 Express van (which uses the same ECM) in my bay with an intermittent no-start that was driving the owner crazy. It would start fine for a week, then refuse to crank for two days. No codes were consistently stored, making diagnostics a nightmare. After checking all the usual suspects—battery, starter, grounds—we hooked up a scope to the ECM outputs. We discovered the 5-volt reference signal would occasionally drop out, a tell-tale sign of internal ECM failure. Replacing the module with a pre-programmed unit like this one solved the problem instantly. The owner was back to work the next day, avoiding costly downtime and diagnostic fees at the dealership.
Common Signs of ECM Failure in Your GM Vehicle
If you’re noticing any of the following symptoms, a failing ECM is a likely culprit. A scan tool may reveal Diagnostic Trouble Codes (DTCs) such as P0601, P0606, or U0100, which point directly to an internal module or communication fault.
- ✔ Check Engine Light is illuminated or flashing
- ✔ Vehicle refuses to start or has intermittent starting problems
- ✔ Noticeable decrease in fuel economy
- ✔ Engine stalling, sputtering, or misfiring
- ✔ Poor acceleration or loss of power
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Communication errors with other vehicle modules
Your Straightforward Installation Guide
Installing your new 2016 Savana 3500 ECM is a manageable job for a DIYer with basic tools. This module is typically located in the rear left of the engine compartment on Savana and Express vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system to fully discharge.
- Locate the ECM: On your Savana 3500, find the ECM in the LH rear of the engine compartment. It’s a metal box with several large electrical connectors.
- Disconnect Connectors: Carefully release the locking tabs on each wiring harness connector and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you’ll need it for the new module.
- Install the New ECM: Mount the new, pre-programmed ECM onto the bracket and secure it with the original hardware.
- Reconnect Everything: Plug the wiring harnesses back into the new module, ensuring they click securely into place. Reconnect the negative battery terminal.
- Final Steps: Some vehicles may require a security relearn procedure, which can often be done by cycling the key. Your vehicle is now ready to start.
Verified Fitment Across a Wide Range of GM Models
This ECM, part number 22819494, is compatible with a broad selection of General Motors vehicles. Please verify your part number or match your vehicle from the list below to ensure proper fitment. This module directly replaces part numbers: 12668866, 12668994, 12643636, 12663405, 12670335, and 12692200.
- ✔ Buick Encore: 2013-2016 (1.4L)
- ✔ Cadillac ELR: 2014-2016
- ✔ Chevrolet Cruze: 2012-2016 (Gasoline models)
- ✔ Chevrolet Express 2500/3500 Van: 2016 (4.8L, 6.0L)
- ✔ Chevrolet Silverado 2500/3500 Pickup: 2012-2016 (6.0L)
- ✔ Chevrolet Sonic: 2012-2016
- ✔ Chevrolet Spark: 2014-2015 (Gasoline)
- ✔ Chevrolet Suburban 3500: 2016
- ✔ Chevrolet Trax: 2013-2016
- ✔ Chevrolet Volt: 2011-2015
- ✔ GMC Savana 2500/3500 Van: 2016 (4.8L, 6.0L)
- ✔ GMC Sierra 2500/3500 & Denali Pickup: 2012-2016 (6.0L)
Don’t let a bad computer keep your van off the road. This programmed 2016 Savana 3500 ECM is the reliable, professional solution to get you back to work quickly and confidently.