Restore Full Electrical Function to Your GM Truck or SUV
Is your GMC Sierra, Chevrolet Silverado, or Tahoe plagued by frustrating electrical problems? Flickering lights, unresponsive 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 malfunctions, it can cause a cascade of confusing issues. This genuine GM Body Control Module, part number 25844480, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Solving Problems with Your 2013 Sierra 2500 BCM
A faulty BCM doesn’t just create annoyances; it can compromise your vehicle’s safety and security. By replacing your failing unit with this pre-programmed module, you eliminate the guesswork and costly dealership visits. We handle the programming for you using the latest GM software updates, ensuring that the module communicates flawlessly with your truck’s other systems right out of the box. This restores control over critical functions and clears persistent diagnostic trouble codes (DTCs) related to body electronics.
Symptoms of a Failing Body Control Module
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lighting.
- ✔ HVAC system failures, such as a blower motor that won’t turn on or temperature controls that don’t work.
- ✔ An illuminated airbag warning light, often accompanied by DTC B1001.
- ✔ Malfunctioning security system, leading to no-start conditions or random alarm activation.
- ✔ Intermittent wiper operation or wipers that won’t turn off.
- ✔ Communication errors with other vehicle modules reported by diagnostic scanners.
Installation and Post-Install Notes
Physically installing your new 2013 Sierra 2500 BCM is straightforward. It is typically located under the driver’s side dashboard, near the steering column, and can be swapped in under 10 minutes with basic tools. While our VIN programming handles the primary setup, some vehicles may require a secondary procedure. If the airbag light remains on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ function with a professional scan tool. In some cases, a ‘Brake Pedal Position Relearn’ may also be necessary to ensure proper brake light and stability control function. This module is a direct replacement for numerous part numbers, including 25823559, 25835966, 20939138, and 22860591.
Frequently Asked Questions
What does a BCM do on a 2013 GMC Sierra 2500?
The Body Control Module (BCM) is a computer that manages and controls a wide range of non-engine related functions. This includes power windows, door locks, the security system, interior and exterior lights, wipers, and the climate control system.
Is this module ready to install out of the box?
Yes. We pre-program the module to your vehicle’s VIN before shipping. This ensures it works with your specific options and security system, allowing for a plug-and-play installation without requiring a trip to the dealer for programming.
Where is the 2013 Sierra 2500 BCM located?
The BCM is typically found under the driver’s side dashboard, mounted near the steering column or behind the lower dash panel.
Will this fix my airbag light with code B1001?
A faulty BCM is a common cause of the B1001 code. Replacing it often resolves the issue, but you may need a scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure after installation to sync the new BCM with the airbag system and turn off the light.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module without needing to send it back, saving you time and hassle.