Are you battling persistent and frustrating electrical problems in your GM truck or SUV? Flickering lights, unresponsive power windows, a malfunctioning security system, or an airbag light that won’t turn off are all classic 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 cause a cascade of confusing issues. This genuine GM BCM, part number 25844480, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
Is Your GM Truck or SUV Showing These Symptoms?
- ✔ Unresponsive or erratic power windows, door locks, or interior/exterior lights.
- ✔ HVAC controls not working correctly, or the blower motor operates intermittently.
- ✔ The security system malfunctions, causing no-start conditions or random alarm triggers.
- ✔ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Stalling, misfires, or other performance issues related to poor grounding signals from the BCM.
- ✔ A variety of diagnostic trouble codes (DTCs) related to body, communication, or security systems.
The Plug-and-Play Solution for Your 2013 Sierra Denali BCM
Don’t waste time and money at the dealership with expensive diagnostic fees and programming charges. We take the guesswork out of the repair. Simply provide your vehicle’s VIN during checkout, and our technicians will program this module with the latest GM software specific to your truck. This ensures that all factory-installed options work correctly right out of the box. Installation is straightforward, typically located under the driver’s side dash near the steering column, and can be completed in minutes with basic tools.
This module is a direct replacement for a wide range of popular 2007-2013 GM trucks and SUVs, including the Chevrolet Silverado, Tahoe, Suburban, Avalanche, GMC Sierra, Yukon, and Cadillac Escalade. It is fully interchangeable with part numbers 25835966, 15263363, 15943678, 25790508, 25844479, 25971916, 20939137, and 22860591, among others.
Post-Installation Procedures
While the module is plug-and-play for most functions, some vehicles may require a simple relearn procedure. If the airbag warning light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the new BCM with the airbag system. In some cases, a Brake Pedal Position Relearn may also be necessary to ensure proper brake light and stability control function. No core charge is required, so you can keep your old part without any hassle.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC system.
Why is VIN programming so important for a BCM?
VIN programming loads the correct software and vehicle-specific options into the module. Without it, features like remote start, power-folding mirrors, or specific lighting packages may not work. Our pre-programming service eliminates the need for an expensive trip to the dealership.
Is this part difficult to install?
Installation is generally simple for those with basic mechanical skills. The BCM is typically located under the driver’s side dashboard and held in place by a few clips or bolts. The entire process often takes less than 15 minutes.
What happens if my airbag light stays on after installation?
This is a common security measure. You will need a professional scan tool with the ability to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM to the airbag module (SDM) and will turn off the light. Many independent repair shops can perform this procedure.
Do I need to return my old BCM?
No. This product comes with no core charge. You can keep, discard, or recycle your original module without any additional fees or hassle.