Is Your GM Vehicle Plagued by Electrical Gremlins?
Are you dealing with flickering lights, malfunctioning power windows, a security system that acts on its own, or random warning lights on your dash? These aren’t just annoyances; they are classic symptoms of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, coordinating everything from your interior lights and door locks to your climate control and instrument cluster. When it begins to fail, it can cause a cascade of confusing and frustrating issues across your vehicle.
The Plug-and-Play Solution for Your 2010 STS Body Control Module
Don’t let a faulty BCM keep you off the road or force you into an expensive and time-consuming visit to the dealership. This replacement Body Control Module, part number 20864768, is the definitive solution for your 2010 Cadillac STS and a wide range of other GM vehicles. We take the guesswork and hassle out of the repair process. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM software specific to your car’s configuration. This ensures a seamless installation process, restoring full functionality without the need for additional programming tools or dealer intervention.
From the Diagnostic Bay
We had a 2011 GMC Acadia come in that was driving the owner crazy. The radio would turn on and off by itself, the dome lights would stay on, and the power liftgate worked intermittently. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic scanner, we saw multiple communication error codes pointing towards the BCM. Instead of a complex and costly diagnostic chase, we installed a VIN-programmed BCM like this one. Within an hour, all the strange electrical issues were gone. The vehicle was back to normal, and the owner was relieved to have a simple, effective solution.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, taillights, dome lights).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Malfunctioning instrument cluster gauges or warning lights.
- ✔ Security system issues, including false alarms or starting problems.
- ✔ Climate control system behaving unpredictably.
- ✔ Intermittent electrical functions that seem to have no pattern.
- ✔ Communication error codes (U-codes) stored in the vehicle’s diagnostic system.
Installation and Post-Install Considerations
This module is designed for a straightforward installation. Once you receive your VIN-programmed BCM, you can typically swap it with the old unit. However, in certain vehicles, additional steps may be required to ensure all systems communicate correctly.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This is a security measure to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide array of part numbers, ensuring broad compatibility across the GM family. Please verify your part number against the list provided: 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
Do I need to send you my old BCM?
No, there is no core charge for this module. You can keep your original part.
What is VIN programming and why is it necessary?
VIN programming involves loading your vehicle’s specific software and settings onto the BCM. This ensures that the module works correctly with the options and features of your car, such as power seats, specific lighting, and security systems. It makes the installation plug-and-play.
Where do I provide my VIN?
You can provide your 17-digit Vehicle Identification Number (VIN) during the checkout process or by sending us a message after your purchase. We cannot ship the module until we have your VIN to program it.
Will this BCM fix my specific problem?
This module will resolve issues directly caused by a faulty BCM. While the symptoms listed are common indicators, proper vehicle diagnosis is always recommended to rule out other potential causes like wiring or sensor faults. This part is a reliable fix for a failed 2010 STS Body Control Module and related vehicles.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the module. However, accessing the BCM can vary in difficulty depending on your vehicle model (e.g., under the dash, behind the glove box). We always recommend consulting a service manual or a professional technician if you are unsure.