Restore Your Van’s Electrical System with a VIN-Programmed BCM

If your 2008-2012 GMC Savana 2500 is acting haunted—with flickering lights, a security system that has a mind of its own, or intermittent starting issues—the Body Control Module (BCM) is the likely culprit. As a technician with over two decades of experience, I’ve seen these modules cause some of the most frustrating and hard-to-diagnose problems. The BCM is the nerve center for your van’s comfort and security features, and when it fails, it can bring your workday to a grinding halt. This isn’t just an inconvenience; for a work vehicle like the Savana, downtime is lost income.

We solve this problem by providing a reliable replacement BCM that is professionally programmed to your van’s exact VIN before it ships. This crucial step ensures all the original options and security settings your vehicle came with are correctly loaded, bypassing the need for an expensive trip to the dealership for programming. You get a part that’s ready for installation right out of the box, designed to restore function and get you back on the road with confidence.

Is Your Savana Van Showing These Symptoms?

• ✔ Intermittent no-start or security light flashing on the dash.
• ✔ Power windows, door locks, or interior lights working erratically or not at all.
• ✔ The horn honking randomly or the alarm system engaging without cause.
• ✔ Gauges on the instrument cluster behaving strangely or dropping out.
• ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
• ✔ The “Service Vehicle Soon” or other warning messages appearing on the driver information center.

A Straightforward Guide to Your BCM Installation

Replacing the BCM in your Savana is a manageable job for a DIYer with basic tools. The key is taking your time and being methodical. This 2008-2012 Savana 2500 BCM is designed for a direct fit.

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: In most Savana and Express vans, the BCM is located behind the center dash panel, often near the radio or climate controls. You will need to carefully remove trim pieces to gain 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 same location and securely reconnect all the electrical harnesses. Ensure they click into place.
5. Reconnect Power: Reattach the negative battery terminal.
6. Perform Relearns (If Needed): Start the vehicle. Check for any warning lights. As noted below, an airbag or brake system relearn may be necessary.

Important Post-Installation Procedures

While our VIN programming handles the heavy lifting, some GM vehicles require a final handshake between modules after installation. Be aware of the following potential steps:

• Airbag System Sync: If the airbag light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.

Disclaimer: Always consult a factory service manual or a qualified professional if you are unsure about any step. No core charge is required; you can keep your old module.

Verified Vehicle Compatibility

This BCM, part number 25826125, is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list. The module is located in the center dash for most vans, and under the dash/steering column for most SUVs and cars.

This module replaces 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.