Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a cascade of frustrating electrical problems in your vehicle? Intermittent wipers, malfunctioning power windows, a dead HVAC system, or a persistent airbag light are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can make your truck or SUV feel unreliable. This genuine GM Body Control Module, part number 25844480, is the definitive solution. We pre-program it to your vehicle’s specific VIN, ensuring it arrives ready for a simple, plug-and-play installation without requiring a trip to the dealership for expensive programming.
From the Diagnostic Bay
We had a 2013 Sierra 2500 in the shop with a textbook case of BCM failure. The owner complained that his radio would turn on by itself, the driver’s side power lock was dead, and the A/C would only blow hot air. After confirming power and grounds to the module were good, we knew the internal logic had failed. Swapping in a VIN-programmed BCM like this one resolved all issues in under 10 minutes. The customer was thrilled to have his truck’s features working reliably again without a massive dealership bill.
Identifying a Failing 2013 Sierra 2500 BCM
A faulty BCM can manifest in numerous ways, often creating a diagnostic puzzle. If you’re experiencing several of the issues below, your BCM is the most likely culprit. Replacing it restores the communication pathways between various sensors and accessories, bringing your vehicle’s systems back online.
- ✔ Power windows, door locks, or mirrors operate intermittently or not at all.
- ✔ Interior dome lights, headlights, or taillights behave erratically.
- ✔ The HVAC system is unresponsive, or the blower motor won’t turn on.
- ✔ Your vehicle’s security system malfunctions, preventing it from starting.
- ✔ An airbag warning light is illuminated, often accompanied by DTC B1001.
- ✔ Seemingly unrelated electrical components fail simultaneously.
Simple Installation and Post-Install Procedures
This module is designed for a straightforward installation, typically located under the driver’s side dashboard near the steering column. Because it’s programmed to your VIN, most functions are restored immediately. However, in some cases, additional steps with a professional scan tool may be needed:
- Airbag System Sync: If the airbag light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light and traction control operation.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM trucks and SUVs from 2007-2013. It is interchangeable with numerous part numbers, including: 25823558, 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591. By providing your VIN, you ensure you receive a perfectly matched and updated module for your vehicle.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM ready to install out of the box?
Yes! We program the module to your vehicle’s VIN before shipping. This makes the installation plug-and-play and eliminates the need for dealership programming for most functions.
What if the airbag light stays on after I install the new BCM?
This is a common security feature. You will need a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure, which syncs the new module to your vehicle’s airbag system.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module.
Where is the BCM located on a 2013 GMC Sierra?
The BCM is typically found under the driver’s side dashboard, to the left of the steering column. It’s an accessible location for a quick replacement.