Restore Full Functionality to Your GM Van

Is your 2008-2012 Express 3500 Van experiencing bizarre electrical problems? Flickering lights, malfunctioning power windows, or a security system that randomly prevents it from starting can bring your workday to a grinding halt. These frustrating issues often point to a single culprit: a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it falters, it creates chaos. This isn’t just an annoyance; it’s a reliability issue that can cost you time and money.

We offer a dependable and straightforward solution. This Body Control Module, part number 20935349, is a direct-fit replacement for your original unit. The best part? We handle the programming for you. Simply provide your vehicle’s VIN during checkout, and our experts will flash the module with the latest GM-certified software specific to your Express Van’s configuration. This ensures that all your vehicle’s options and features will work correctly right out of the box, saving you an expensive trip to the dealership and the hassle of coordinating programming services.

Is Your Van Showing These Symptoms?

• ✔ Erratic or non-functional interior/exterior lights.
• ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
• ✔ The security or anti-theft system light is on, causing a no-start condition.
• ✔ Instrument cluster gauges behaving strangely or warning lights staying illuminated.
• ✔ Diagnostic trouble codes (DTCs) related to lost communication, such as U0140, U0155, or other U-codes.
• ✔ Wipers or horn activating on their own.

Your Straightforward BCM Installation Guide

Installing your new BCM is a manageable job for a confident DIYer or any professional mechanic. For the Express/Savana platform, the BCM is typically located in the center dash area.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: On most Express and Savana vans, you’ll find the BCM behind the center instrument panel trim, often near the HVAC controls. You may need to remove a few dash panels for access.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
4. Install the New Module: Mount your new, pre-programmed BCM in the exact same position as the old one. Securely reconnect all electrical connectors, ensuring they click into place.
5. Power Up: Reconnect the negative battery terminal. Turn the ignition to the ‘On’ position (without starting the engine) and test all body functions—lights, locks, windows, wipers, etc.
6. Final Procedures: In some cases, post-install relearn procedures may be needed. If your airbag light is on, a scan tool is required to perform the ‘Setup SDM Primary Key’ function. A ‘Brake Pedal Position Relearn’ might also be necessary.

Verified Vehicle Compatibility

This BCM is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. It is crucial to match your vehicle’s year, make, and model from the list below. This module is compatible with part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.

Disclaimer: While this 2008-2012 Express 3500 BCM fits a wide array of vehicles, always confirm your specific model and options. Procedures can vary. Consult a factory service manual or a qualified technician for guidance.