Is Your Work Van Sidelined? Get It Back on the Job, Fast.
For a business owner, a Chevrolet Express 3500 that won’t start, runs rough, or guzzles fuel isn’t just an inconvenienceโit’s a direct hit to your bottom line. Every day it’s down, you’re losing money. The culprit is often a failing Engine Control Module (ECM), the computer that acts as your van’s brain. When it malfunctions, you’re faced with frustrating symptoms and the headache of a costly, time-consuming trip to the dealership. We offer a better way.
This is a direct-fit Engine Control Module for your 2017-2020 Express 3500, delivered to your door fully programmed and ready for installation. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash the module with the latest, most stable software updates directly from GM. This isn’t just a replacement part; it’s a complete solution designed to get you back on the road with confidence.
Real-World Diagnostics: A Technician’s Experience
“Just last month, a 2018 Express 3500 was towed into my bay. The owner, a plumber, was convinced his fuel pump had failed againโhe’d already replaced it twice. The van would crank but not start, and when it did, it ran terribly. After connecting my scan tool, I saw no communication with the ECM. Instead of throwing more parts at it, we tested the power and ground circuits to the module, which were perfect. The issue was a classic internal ECM failure. We installed one of our pre-programmed modules, and the van fired right up and ran perfectly. It saved the customer hundreds of dollars and another incorrect diagnosis.”
Why Our 2017-2020 Express 3500 ECM is the Superior Solution
Don’t let a faulty computer dictate your work schedule. Our process eliminates the typical hurdles of ECM replacement, providing a streamlined and reliable fix.
- โ VIN-Matched Programming: We load your vehicle’s specific VIN and all related operational data, ensuring perfect communication with all other modules in your van.
- โ Latest GM Software: Your module arrives with the most current software updates, addressing factory bugs and improving performance and efficiency.
- โ No Dealer Required: Skip the expensive programming fees and long wait times at the dealership. This module is prepared for a straightforward installation.
- โ Solves Common Failure Points: Effectively resolves issues like check engine lights, communication errors, harsh shifting, and no-start conditions.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new 2017-2020 Express 3500 ECM is a manageable job for a competent DIYer or any professional mechanic. Follow these steps for a smooth installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the ECM: On the Express 3500, the ECM is typically found in the engine compartment on the driver’s side.
- Disconnect Connectors: Carefully release the locking tabs on the electrical harness connectors and pull them straight out from the module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location. Securely reconnect the electrical harnesses, ensuring the locking tabs click into place.
- Reconnect Battery: Reattach the negative battery terminal. The vehicle may need to complete a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Guaranteed Fitment & Compatibility
This module is a direct replacement for part numbers 12692201 and 12668986. While we program it specifically for your 2017-2020 Express 3500 ECM application, this hardware is also used in the following vehicles, demonstrating its robust GM engineering:
- 2017-2018 SILVERADO 2500 PICKUP (6.0L)
- 2017-2018 SIERRA 2500 PICKUP (6.0L)
- 2017-2018 SONIC
- 2017-2018 ENCORE (1.4L, VIN B)
- 2017 SUBURBAN 3500
Order today and restore the reliability and performance your business depends on. Provide your VIN, and let us handle the complex programming so you can focus on a simple, effective repair.