Is Your Work Van Unreliable? Get Back on the Road Fast.
As a mechanic with over two decades of experience, I know that a down work van isn’t just an inconvenience—it’s a loss of income. If your 2005-2007 Express 3500 is suddenly stalling, shifting erratically, refusing to start, or throwing a dozen confusing communication codes, the Powertrain Control Module (PCM) is a very likely culprit. These symptoms often point directly to a failing engine computer, the electronic brain that manages everything from fuel delivery to transmission shifting.
The No-Hassle Solution: A VIN-Programmed PCM
Forget about towing your van to a dealership and waiting days for an expensive repair. This is a direct-fit replacement PCM, part number 12589462, that arrives at your door ready for installation. We take care of the most critical step for you: programming. After you place your order, simply provide us with your vehicle’s VIN. Our technicians will then flash the module with the latest, most stable GM-certified software specific to your Express 3500. This ensures perfect communication between the engine, transmission, and all other onboard systems.
Expert Pro Tip: Before installing your new PCM, take five minutes to inspect and clean the main ground connections. On these Express and Savana vans, the primary PCM ground is on the engine block or frame rail near the module. Over the years, corrosion builds up here, creating resistance that can mimic PCM failure or damage a new module. A quick cleaning with a wire brush can save you a major headache.
Why Choose Our Pre-Programmed 2005-2007 Express 3500 PCM?
This isn’t just a part; it’s a complete solution designed to solve your problem efficiently and affordably. Here’s what sets it apart:
- ✔ VIN-Specific Programming: We load your van’s exact VIN and software calibration, ensuring it works correctly right out of the box.
- ✔ Latest GM Updates: Your module comes with the newest software from General Motors, which often corrects factory drivability issues and improves performance.
- ✔ No Dealer Required: Save hundreds of dollars and significant downtime by avoiding mandatory dealership programming.
- ✔ Resolves Common Failures: Effectively addresses issues like harsh shifting, no-start conditions, false sensor codes, and Check Engine Light illumination.
- ✔ Broad Compatibility: This module directly replaces part numbers 12589462, 12602801, and 89017749, fitting a wide range of GM trucks and vans.
Plug-and-Play Installation: No Dealer Visit Required
Installing this module is a straightforward job you can do with basic hand tools. For the Express 3500, the PCM is located in the engine compartment on the driver’s side.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10 minutes for the system to discharge.
- Locate the PCM: On your Express van, find the module in the LH (driver’s side) rear of the engine compartment.
- Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock.
- Reconnect Battery: Re-attach the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes.
Don’t let a faulty computer keep your business parked. Order this VIN-programmed PCM today and restore the reliability and performance of your Chevrolet Express 3500.