Is Your Express 1500 Plagued by Electrical Gremlins?
If you’re dealing with bizarre electrical issues in your 2008-2012 Express 1500, a failing Body Control Module (BCM) is often the culprit. As the central command for your van’s body electronics, its failure can cause a cascade of frustrating problems that can take your workhorse off the road. In my 20+ years as a technician, I’ve seen these BCMs cause everything from a dead battery overnight to a dashboard that lights up like a Christmas tree for no reason.
A customer’s 2011 Express 1500 came into the shop last month with these exact symptoms. The battery would be dead every morning, and the interior lights would randomly flicker. After checking the battery and alternator, we traced it to a faulty BCM causing a parasitic draw. This programmed module was the direct-fit solution that got his van back in service the same day.
The Direct Solution for Common BCM Failures
Don’t let a faulty module disrupt your work. This replacement BCM is the reliable fix for a wide range of symptoms, restoring your van’s functionality and your peace of mind.
- ✔ Fixes Parasitic Battery Drain: Stops the mysterious power draw that leaves you with a dead battery.
- ✔ Corrects Erratic Lighting: Solves issues with headlights, taillights, or interior lights flickering or not working at all.
- ✔ Restores Power Accessories: Gets your power windows, door locks, and remote keyless entry working correctly again.
- ✔ Eliminates False Warning Lights: Clears phantom warning indicators on your instrument cluster caused by BCM communication errors.
- ✔ Programmed to Your Van: We flash this module with the latest GM software using your specific Vehicle Identification Number (VIN). This ensures seamless integration and avoids the high cost and hassle of a dealership visit.
Simple Installation for Your 2008–2012 Express 1500 Body Control Module
We make this repair straightforward. By programming the module before we ship, we eliminate the most complicated step. You can install this part with basic hand tools right in your driveway.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: On the Express 1500, the BCM is typically located in the center dash area. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the New BCM: Mount the new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Final Setup: Start the vehicle. You will need to perform a couple of crucial post-installation procedures with a capable scan tool to ensure full functionality.
Critical Post-Installation Steps
Important: After installation, two procedures are required to sync the new BCM with your vehicle’s other systems. This is not optional and ensures safety and proper operation.
- Airbag System Reset: You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a diagnostic tool. This step is essential to clear the airbag warning light and ensure the safety system is active.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated. This ensures the brake lights and stability control systems function correctly.
Guaranteed Fitment & Part Number Compatibility
This BCM is a direct replacement for a wide array of original part numbers. If your old module has any of the following numbers, this part is the correct fit for you:
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
This module also fits a broad range of other GM vehicles, including the Acadia, Impala, Tahoe, Savana, Yukon, and more. Please verify your part number to ensure compatibility.