Is your Cadillac STS or other GM vehicle suffering from bizarre and frustrating electrical problems? Power windows with a mind of their own, intermittent door locks, a flickering security light, or dashboard warnings that come and go? These are classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of seemingly unrelated issues. Restore order and reliability with this direct-replacement, VIN-programmed Body Control Module.
From the Diagnostic Bay
We had a 2011 GMC Acadia come into the shop that was driving the owner crazy. The radio would randomly shut off, the driver’s side power window wouldn’t work on hot days, and the anti-theft system would occasionally prevent the car from starting. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic scanner, we saw multiple communication error codes pointing to the BCM. Instead of a dozen separate problems, it was one single faulty module. We installed a VIN-programmed BCM just like this one, and every single electrical gremlin vanished. It’s a perfect example of how one central component can cause widespread chaos when it fails.
Symptoms of a Failing Body Control Module
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Intermittent windshield wiper operation.
- ✔ False security system alarms or a persistent anti-theft light.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating without a clear cause.
- ✔ Problems with key fob recognition and remote start functionality.
- ✔ Rapid battery drain while the vehicle is parked.
The Plug-and-Play Solution for Your 2010 STS Body Control Module
Replacing a BCM used to mean a trip to the dealership for expensive programming and calibration. Our process eliminates that hassle. We take your vehicle’s VIN and flash this module with the latest, most stable software directly from GM. This ensures that when you receive the part, it’s ready to be installed, communicating perfectly with your vehicle’s other systems right out of the box. This is the most efficient way to get your car back to 100% functionality without the dealership’s high costs and long wait times. This module is a direct replacement for a wide range of part numbers, including 25934762, 15880684, 20815898, and 22860591.
Installation and Post-Install Notes
While installation is straightforward for those with mechanical experience, some post-installation procedures may be necessary depending on your specific vehicle. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper function of the brake lights and stability control systems.
We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the installation process. There is no core charge for this part, so you can keep your original module.
Frequently Asked Questions
Why do you need my vehicle’s VIN?
Your Vehicle Identification Number (VIN) allows us to program the Body Control Module with the exact software and vehicle-specific options that your car came with from the factory. This ensures seamless integration and proper function of all electronic features, making the installation process as simple as possible.
Is this a difficult part to install?
For someone with moderate DIY automotive experience, the physical replacement is generally not difficult. The BCM is typically located under the dashboard on the driver’s or passenger’s side. The main challenge without our service is the programming, which we handle for you. However, some vehicles may require additional electronic relearn procedures as noted in the description.
Will this BCM fix my specific electrical problem?
This module is the solution for issues directly caused by a faulty BCM. The symptoms list provided covers the most common failures. If you are experiencing several of those issues simultaneously, it is highly likely that the BCM is the culprit. A proper diagnosis from a qualified technician is always the best way to be certain.
Do I need to send my old BCM back?
No. This product has no core charge. You can keep your original module without any additional fees or hassle.
What happens if the airbag light is on after I install this?
If the airbag light illuminates after installation, it means the new BCM needs to be electronically synced with your vehicle’s Sensing and Diagnostic Module (SDM). This requires a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a standard procedure for this type of repair.