Programmed 2008-2012 Express 3500 Van BCM | 20864767 | Body Control Module

Restore Your Van’s Brain and End Electrical Chaos

If you’re dealing with bizarre electrical issues in your 2008-2012 Chevy Express 3500 Van, you know how frustrating it can be. One day the power locks don’t work, the next the radio is acting up, or worse—you’re getting random warning lights on the dash. These aren’t just annoyances; they’re symptoms that the central nervous system of your vehicle’s electronics, the Body Control Module (BCM), is failing. This isn’t a part you can ignore. It’s the core of your van’s comfort, convenience, and safety features.

We offer a dependable, direct-fit solution: a replacement BCM, part number 20864767, that arrives at your door fully programmed to your van’s specific Vehicle Identification Number (VIN). We handle the complex part—flashing the module with the latest GM software—so you don’t have to. This means no expensive trips to the dealership for programming, no special scan tools required for the initial setup. You get a reliable part that’s ready to install right out of the box, getting your workhorse van back on the road and functioning correctly.

Common Signs of a Failing BCM

A faulty BCM can manifest in numerous ways. If your van is showing any of these signs, your module is likely the culprit. Proper diagnosis is always recommended, but these are classic indicators:

• ✔ Erratic or non-functional power windows, door locks, or mirrors.
• ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
• ✔ The security or anti-theft light is illuminated, potentially causing a no-start condition.
• ✔ Inaccurate or dead gauges on the instrument cluster.
• ✔ Warning messages such as ‘Service Stabilitrak’ or ‘Service Traction Control’.
• ✔ Communication error codes, like U0100 (Lost Communication with ECM/PCM) or other U-codes.
• ✔ Wipers or the horn activating randomly or not working when commanded.

A Straightforward Guide to Installation

For the confident DIYer or professional technician, replacing the BCM is a manageable job. Our pre-programmed module makes it significantly easier.

1. Step 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. Step 2: Locate the BCM. On the 2008-2012 Express and Savana vans, the BCM is typically located in the center dash area, often accessible by removing lower dash panels.
3. Step 3: Disconnect and Remove. Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt the module from its mounting bracket.
4. Step 4: Install the New Module. Mount your new, pre-programmed BCM in place and securely fasten it. Reconnect all electrical connectors, ensuring they click into place.
5. Step 5: Reconnect Power. Reattach the negative battery terminal.
6. Step 6: Perform Final Checks. Start the vehicle and test all body functions: lights, locks, windows, wipers, etc. Note that some post-install procedures may be necessary (see below).

Important Post-Installation Notes

While our BCM is plug-and-play, some vehicle systems may require a ‘handshake’ with the new module. This is normal. Specifically, be aware of the following:

• Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
• No Core Charge: You are not required to send your old module back to us. There is no core charge or fee associated with this purchase.

Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.

Verified Vehicle Compatibility

This BCM is a direct replacement for a wide range of GM vehicles. Please verify your part number against our list. This module fits the following vehicles and interchanges 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.