Programmed 2005-2007 Express 3500 PCM 89017749 | VIN Matched | GM Updates

Is Your Express Van Sidelined? Get it Back on the Road.

There’s nothing more frustrating than a work van that won’t work. Whether your 2005-2007 Chevrolet Express 3500 is refusing to start, running rough, or flashing a stubborn Check Engine Light, a faulty Powertrain Control Module (PCM) is often the culprit. As the brain of your van’s engine and transmission, when it fails, it can cause a cascade of problems that cost you time and money. I’ve seen it hundreds of times in my shop: mechanics chase down sensor codes and replace perfectly good parts, only to find the PCM was the root cause all along.

The Simple, Reliable Solution: A VIN-Programmed PCM

Forget expensive dealership visits and the hassle of towing your van for programming. This module is the direct, effective fix you need. We take a high-quality, tested PCM and flash it with the latest official GM software, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). It arrives at your door ready for a simple, plug-and-play installation.

• ✔ VIN-Programmed for Your Van: We flash the module with your specific VIN, ensuring it communicates perfectly with your vehicle’s systems.
• ✔ Latest GM Software Updates: Your module comes loaded with the newest calibrations from General Motors, often correcting factory bugs and improving performance and efficiency.
• ✔ No Dealer Required: This is a true DIY-friendly solution. Once installed, the van will start and run correctly without needing any further programming.
• ✔ Solves Common Issues: An effective fix for no-start conditions, harsh shifting, false sensor codes, poor fuel economy, and failed emissions tests.
• ✔ Direct Replacement: Guaranteed to be compatible with original part numbers 12589462, 12602801, and 89017749.

Easy Installation Guide for Your 2005-2007 Express 3500 PCM

You can do this. The PCM on the Express and Savana vans is located in the engine compartment on the driver’s side, making it one of the easier modules to access. Follow these steps for a smooth installation.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system to fully discharge.
2. Locate the PCM: Open the hood and find the module in the rear driver’s side of the engine bay. It’s a silver metal box with several large electrical connectors.
3. Disconnect the Connectors: Carefully unlatch and remove all electrical harness connectors from the old PCM. Inspect the pins on the harness side for any corrosion or damage. Clean them with a dedicated electronics cleaner if necessary.
4. Remove the Old Module: Unbolt the PCM from its mounting bracket and remove it from the vehicle.
5. Install the New Module: Mount your new, pre-programmed PCM onto the bracket and securely tighten the bolts.
6. Reconnect Everything: Firmly plug the harness connectors into the new module until they click into place. Reconnect the negative battery terminal.
7. Final Steps: Your van is now ready to start. In some cases, a security relearn procedure may be required, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.

Guaranteed Fitment

This module is a direct fit for a wide range of GM trucks and vans. Please verify your vehicle is on the list below. Upon purchase, simply provide us with your VIN, and we’ll handle the rest.