Is Your GM Vehicle Plagued by Baffling Electrical Problems?
If you’re dealing with flickering lights, malfunctioning power windows or locks, a security system that acts up, or even a car that won’t start, the culprit is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated issues. Don’t let electrical gremlins take your vehicle off the road. This VIN-programmed GM Body Control Module is the reliable, straightforward solution to restore your vehicle’s functionality.
From the Diagnostic Bay
We had a 2009 Chevy Equinox come in with the classic signs: the instrument cluster lights would flicker randomly, the radio would turn off, and the “Service Theft System” message kept appearing. The owner had already replaced the battery and checked the grounds with no luck. After a quick scan, we saw multiple communication errors pointing to the BCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed units. The installation was simple, and all the strange electrical issues were gone instantly. The customer was back on the road the same day, saving hundreds on dealer fees and diagnostic time.
Symptoms of a Failing GM Body Control Module
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ Vehicle security system faults or alarm sounding unexpectedly.
- ✔ Intermittent no-start condition or issues with key fob recognition.
- ✔ Warning lights on the dashboard, such as the airbag or check engine light.
- ✔ Wipers or horn activating on their own or not working when needed.
Plug-and-Play Solution, No Dealer Visit Required
The biggest hurdle in replacing a BCM is the need for expensive, vehicle-specific programming. We eliminate that step entirely. Simply provide us with your vehicle’s VIN during checkout, and our experts will program this GM Body Control Module with the latest GM software updates specific to your car. This ensures it communicates perfectly with your vehicle’s other systems right out of the box. While the core installation is plug-and-play, some vehicles may require a simple relearn procedure for systems like the airbags or brake pedal position sensor, which can often be done with a high-quality bidirectional scan tool.
Post-Installation Procedures
Please be aware of the following potential requirements after installation:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a procedure called “Setup SDM Primary Key in BCM” must be performed with a professional diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and to satisfy the traction control system.
This module is a direct replacement for a wide range of part numbers, including: 10382479, 15093910, 15276271, 15299986, 15819552, 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 does a Body Control Module do?
The BCM acts as the brain for your vehicle’s electronic accessories. It controls functions that are not related to the engine, such as power windows, locks, lights, wipers, security systems, and more.
Is this BCM difficult to install?
The physical installation is typically straightforward, involving unplugging the old module and plugging in the new one. Because we pre-program it to your VIN, you avoid the complex and expensive programming step at a dealership. Some minor relearn procedures may be required post-installation.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
What happens if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to your vehicle’s airbag system (SDM). A qualified technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old BCM back?
No. This purchase does not require a core return. You can keep your original module.