Get Your Workhorse Van Back on the Road
Is your 2016 Chevy Express 2500 letting you down? A faulty Engine Control Module (ECM) can bring your business to a halt with frustrating issues like poor performance, no-start conditions, or a persistent Check Engine Light. This pre-programmed ECM is the definitive solution to get your reliable workhorse back on the job, performing just as it should. We eliminate the guesswork and costly dealer visits by programming the unit specifically for your van using your VIN before it ever leaves our facility.
Common Symptoms & Your Solution
A failing engine computer can manifest in numerous ways, often causing confusion and costly diagnostic time. If your van is experiencing any of the following, a faulty ECM is a likely culprit:
- Unexpected stalling or rough idling
- Noticeable loss of power and poor acceleration
- Reduced fuel economy, costing you more at the pump
- Check Engine Light is on with communication-related trouble codes (e.g., P0601, P0606)
- Intermittent starting problems or a complete no-start condition
- Erratic transmission shifting behavior
Don’t let these issues keep your vehicle sidelined. Your solution is this professionally programmed 2016 Express 2500 ECM 12670335. It’s designed to restore your engine’s factory performance and get you back to work with confidence.
Features & Benefits
- ✔ VIN-Programmed for Your Van: This isn’t a generic, one-size-fits-all part. We flash it with the latest GM software updates using your vehicle’s specific VIN, ensuring perfect compatibility and communication with other modules.
- ✔ Plug-and-Play Installation: Because the programming is done beforehand, you can avoid a trip to the dealership. In most cases, installation is straightforward, saving you significant time and labor costs.
- ✔ Restored Engine Performance: A correctly functioning ECM is the brain of your engine. This replacement ensures precise fuel delivery, ignition timing, and emissions control for optimal power and efficiency.
- ✔ Cost-Effective Solution: Get the reliability you need without the high cost and hassle of sourcing and programming a new module from a dealer.
- ✔ Broad Compatibility: This module is a direct replacement for multiple part numbers, including 12668866, 12668994, 12643636, 12663405, and more.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight from a 20-Year Technician
“I’ve seen it a hundred times: a work van is down, and every hour it sits, money is lost. The temptation is to grab the cheapest computer you can find, but that’s a recipe for disaster. The real key to a lasting repair is the programming. When an ECM isn’t flashed correctly to the vehicle’s VIN, you’re just trading one set of problems for another—from security system lockouts to incorrect transmission behavior. That’s why this 2016 Express 2500 ECM 12670335 is the smart choice. Getting it pre-programmed by experts who handle these daily means the job gets done right the first time, saving you immense frustration and diagnostic headaches down the line.”
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during checkout, and the module will arrive ready for installation.
What information do you need from me?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) to load the correct, vehicle-specific software and calibrations onto the module. This ensures it functions perfectly with your van’s engine, transmission, and options.
Is this a brand new part?
This is a quality, tested replacement part that has been meticulously inspected to ensure it meets or exceeds original equipment performance. It is programmed with the newest software available from the manufacturer for your vehicle.
How do I know for sure that my old ECM is bad?
While the symptoms listed above are strong indicators, a definitive diagnosis from a qualified technician is always recommended. Common diagnostic trouble codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault) are clear signs of internal module failure.
Will this fix my van’s specific problem?
If the root cause of your vehicle’s issues is a failed ECM, this part is the correct solution. It is crucial to ensure the vehicle has been properly diagnosed, as other issues (like wiring or sensor problems) can sometimes mimic ECM failure.