Is your GM truck or SUV experiencing bizarre electrical issues?
If your power windows have a mind of their own, the door locks work intermittently, or your HVAC system is acting up, you’re likely dealing with a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This genuine OEM-quality Body Control Module, part number 25971916 (interchangeable with 25844480 and others), is the definitive solution for restoring full functionality to your vehicle.
We take the guesswork and dealership hassle out of the repair. Each module is expertly programmed to your vehicle’s specific VIN before shipping. This ensures a true plug-and-play installation, eliminating the need for expensive scan tools or a trip to the dealer for programming. Simply install the module, and you’re ready to go.
From the Diagnostic Bay
We had a 2011 Silverado 2500 in the shop with a classic case of BCM failure. The customer complained of the radio turning off randomly, the dome light staying on, and a persistent airbag warning light. They had already replaced the battery and checked several fuses with no luck. After a quick scan, we found a B1001 DTC pointing to a communication error. Instead of just swapping the part, we first checked the main ground points under the dash, as a poor ground can mimic BCM failure. The grounds were solid. We installed one of our VIN-programmed BCMs, performed the quick SDM key sync with our scanner to clear the airbag code, and all the ghost-like electrical issues were gone. It’s a reminder that while the BCM is often the culprit, a quick check of the basics can save a lot of headaches.
Symptoms of a Failing 2013 Sierra Body Control Module
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior or exterior lights failing to turn on or off correctly.
- ✔ HVAC and climate control functions are unresponsive or intermittent.
- ✔ Vehicle security system malfunctions, causing starting issues or false alarms.
- ✔ Airbag warning light is illuminated on the dash (often with code B1001).
- ✔ Wipers behaving unpredictably or not working at all.
- ✔ Multiple, unrelated diagnostic trouble codes (DTCs) stored in the system.
Plug-and-Play Reliability
This isn’t just a replacement part; it’s a complete solution. By programming the module to your VIN, we ensure all factory-installed options and security features work seamlessly upon installation. Built to strict OEM standards, this module is designed for long-lasting durability, giving you peace of mind whether you’re on the job site or on a family road trip. This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 20939137, 22860591, and more, making it the right choice for your 2007-2013 GM truck or SUV.
Installation and Post-Install Notes
Installation is straightforward for those with basic mechanical skills. The BCM is typically located under the driver’s side dashboard, near the steering column. While the physical swap takes minutes, please be aware of potential post-installation procedures. If the airbag light remains on, a ‘Setup SDM Primary Key in BCM’ procedure is required using a professional-grade scan tool. In some cases, a Brake Pedal Position Relearn may also be necessary. There is no core charge for this part, so you can keep your old module without any extra hassle.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM acts as the main computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and HVAC controls.
Why is VIN programming so important for a BCM?
VIN programming loads your vehicle’s specific software and security information onto the module. Without it, the BCM won’t communicate correctly with other modules, leading to features not working and potential no-start conditions. Our pre-programming service makes the part ready to install out of the box.
Can I install this BCM myself?
Yes, the physical installation is simple and usually takes less than 15 minutes. However, be prepared for potential post-install electronic procedures like an airbag system sync, which requires a professional scan tool.
What is the ‘SDM Primary Key’ procedure mentioned?
This is an electronic handshake between the new BCM and the vehicle’s airbag system (Sensing and Diagnostic Module). It’s a security procedure required on many GM vehicles to ensure the airbag system is properly configured. It must be done with a compatible high-end scan tool.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old BCM back to us, saving you time and money on return shipping.