Is Your GM Vehicle Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, malfunctioning power windows, or a security system that has a mind of its own, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central nervous system for your vehicle’s body electronics, coordinating everything from your interior lights and power locks to the anti-theft system. When it fails, it can cause a cascade of frustrating and seemingly unrelated issues, making your vehicle unreliable.
From the Diagnostic Bay
We once had a contractor bring in his 2011 Express work van. The dome lights would stay on, draining the battery overnight, and the power door locks worked only when they felt like it. He was losing work time and was frustrated with the unreliability. After checking the wiring, we traced the issue to a faulty BCM. Instead of a costly trip to the dealership for a new module and programming, we supplied him with a VIN-programmed unit just like this one. He installed it himself in under an hour, and his van was back to being a reliable workhorse the next day.
Common Symptoms of BCM Failure
- ✔ Intermittent or non-functional power windows, mirrors, and door locks.
- ✔ Erratic behavior from dashboard gauges or warning lights (like the security light).
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ Remote keyless entry failure.
- ✔ Vehicle failing to start due to security system confusion.
The Simple, Reliable Solution: A VIN-Programmed BCM
Don’t let a faulty module keep your vehicle off the road. This Body Control Module is a direct-fit replacement for a wide range of GM vehicles. The critical difference is our service: we program the module to your vehicle’s specific VIN before it ships. This means it arrives loaded with the latest GM software updates, ready for a straightforward installation. You get a part that communicates perfectly with your vehicle’s other systems without needing an expensive trip to the dealer for programming.
Why Choose Our Programmed Express 3500 Body Control Module?
This isn’t just a part; it’s a complete solution. By matching the software to your VIN, we ensure seamless integration. This Express 3500 Body Control Module restores the precise functionality you expect from your vehicle. After purchase, simply provide us with your VIN, and our technicians will handle the complex programming, saving you time and money.
Important Installation Notes
While this module is designed for a simple installation, some vehicles may require additional steps after the part is in place. These are known as relearn procedures and can sometimes be necessary to sync the new BCM with other systems.
- Airbag System Sync: If the airbag warning light is illuminated 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 recalibration may be required to ensure your brake lights and traction control system function correctly.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Broad GM Compatibility
This BCM fits a wide variety of GM cars, trucks, and SUVs. Please verify your original part number against the list below to ensure compatibility. This module replaces the following 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
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We must have your VIN to program the module before we can ship your order.
Is this part difficult to install?
For many DIYers, the physical installation is straightforward as the BCM is typically located under the dashboard. However, as noted, some vehicles may require additional relearn procedures with a professional scan tool after installation.
Do I need to return my old BCM?
No. This purchase does not require a core return. You can keep your original module.
What if my airbag light comes on after installation?
An illuminated airbag light means the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be performed by a repair shop with a high-level diagnostic tool.