Restore Peak Performance to Your GM Vehicle
Is your truck or car suffering from frustrating, hard-to-diagnose issues? A faulty Engine Control Module (ECM), often called the vehicle’s brain, is a common culprit behind poor engine performance, stalling, and persistent check engine lights. This replacement ECM, part number 12692200, is the definitive solution for your 2016 Suburban 3500 Engine Control Module needs and a wide range of other GM vehicles. We take the guesswork and hassle out of the repair by programming the module to your specific Vehicle Identification Number (VIN) before it ships. This ensures it arrives ready for a straightforward installation, saving you a costly trip to the dealership.
A Technician’s Notebook: The Intermittent Stall Case
I once had a 2014 Silverado 2500 in my bay that was driving the owner crazy. It would stall randomly at red lights, but never consistently enough to diagnose easily. No clear fault codes were stored, just some generic communication errors. After checking all the usual suspects—fuel pressure, sensors, wiring—I suspected the ECM. The internal processor was likely failing under specific thermal conditions. We installed a VIN-programmed ECM, just like this one, and the problem vanished instantly. The customer was thrilled to have his reliable work truck back without spending a fortune on diagnostic time.
Is Your GM Vehicle Showing These ECM Failure Signs?
A failing computer can manifest in many ways. If you’re experiencing any of the following, a faulty ECM is a likely cause. This is especially true if you see diagnostic trouble codes (DTCs) like P0601, P0606, or U0100.
- ✔ Check Engine Light is on or flashes intermittently
- ✔ Engine cranks but refuses to start
- ✔ Unexplained stalling or rough idling
- ✔ Noticeable decrease in fuel economy
- ✔ Poor acceleration or hesitation
- ✔ Transmission shifting issues or harsh shifts
- ✔ Communication failures with scan tools
A Straightforward Guide to Installation
Installing your new, pre-programmed ECM is a job most DIYers can handle in under an hour. Since we’ve handled the programming, no special tools are required for that step.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most trucks and vans like the Suburban, Silverado, and Express, the ECM is located in the engine compartment, typically on the driver’s side near the firewall or fender.
- Disconnect the Module: Carefully release the locking tabs on the electrical connectors and pull them straight out. Then, unbolt the module from its mounting bracket.
- Install the New ECM: Bolt the new module into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Reconnect Power: Reattach the negative battery terminal.
- Final Steps: Start the vehicle. It may run slightly rough for the first few minutes as the system performs its idle relearn procedure. Let it idle for 5-10 minutes, then take it for a test drive.
Verified Compatibility for a Wide Range of GM Vehicles
This module is a direct replacement for several part numbers, including 12668866, 12668994, 12643636, and 12692200. It is guaranteed to fit the following vehicles. Please provide your VIN upon purchase to ensure perfect configuration.
- Buick Encore (2013-2016)
- Cadillac ELR (2014-2016)
- Chevrolet Cruze (2012-2016)
- Chevrolet Express 2500/3500 Van (2016)
- Chevrolet Silverado 2500/3500 Pickup (2012-2016)
- Chevrolet Sonic (2012-2016)
- Chevrolet Spark (2014-2015)
- Chevrolet Trax (2013-2016)
- Chevrolet Volt (2011-2015)
- GMC Savana 2500/3500 Van (2016)
- GMC Sierra 2500/3500 Pickup (2012-2016)
- GMC Sierra Denali 2500/3500 (2012-2016)
- Chevrolet Suburban 3500 (2016)
Frequently Asked Questions
Frequently Asked Questions
What exactly is VIN programming?
VIN programming involves loading your vehicle’s unique 17-digit VIN into the ECM. This configures the module with the correct software for your engine, transmission, and factory-installed options, ensuring seamless communication and operation without any additional dealer visits.
Do I need to do anything after installing this part?
No further programming is needed. After installation, you may need to perform a simple idle relearn procedure, which usually involves letting the vehicle idle for several minutes. Any stored trouble codes should also be cleared with a standard OBD2 scanner.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s VIN. We cannot ship your part until we receive and process this information.
Will this fix my specific problem?
This ECM is a direct solution for failures within the module itself. While it resolves the most common electronic engine issues, always ensure your vehicle has been properly diagnosed. Problems with wiring, sensors, or fuel delivery can sometimes mimic ECM symptoms.
Is this part difficult to install for a DIYer?
Not at all. For most of the listed vehicles, the ECM is easily accessible in the engine bay and requires only basic hand tools to swap out. Our pre-programming service handles the most complex part of the job for you.