Restore Full Electrical Function to Your GM Truck or SUV
Are you experiencing a cascade of frustrating electrical problems in your vehicle? Intermittent power windows, a malfunctioning security system, flickering lights, or unresponsive HVAC controls are all classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features, and when it fails, it can make your truck or SUV feel unreliable. This genuine GM 25844480 Body Control Module is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
From the Diagnostic Bay
We had a 2011 Silverado 2500 in the shop that was driving the owner crazy. The radio would turn off randomly, the dome light wouldn’t work, and the power locks were intermittent. He had already replaced the battery and checked fuses with no luck. After plugging in our scanner, we saw a handful of communication codes pointing to the BCM. Before condemning the module, we always check the main BCM ground, which is often located on the A-pillar near the driver’s kick panel. In this case, the ground was tight and clean. We installed a VIN-programmed BCM, and every single issue was resolved instantly. It’s a reminder that while grounds are a common culprit, a faulty module is often the root cause of these widespread electrical gremlins.
Common Symptoms of a Failing BCM
- ✔ Unresponsive or erratic power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ HVAC system failures, such as a blower motor that won’t work or incorrect temperature control.
- ✔ An illuminated airbag warning light, often accompanied by DTC B1001.
- ✔ Security system malfunctions, including false alarms or a no-start condition.
- ✔ Erratic windshield wiper operation.
- ✔ A variety of communication-related Diagnostic Trouble Codes (DTCs).
The Plug-and-Play Solution: A Programmed 2013 Sierra 2500 BCM
Don’t waste time and money on a trip to the dealership for expensive programming. We handle the complex part for you. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this module with the latest GM-certified software specific to your truck’s configuration. This ensures that all existing features work correctly right out of the box. This OEM-quality 2013 Sierra 2500 BCM is a direct replacement that restores the performance and reliability you expect from your vehicle.
Installation and Post-Install Notes
The BCM is typically located under the driver’s side dashboard, near the steering column, making for a quick and accessible replacement. In most cases, the process takes less than 15 minutes. However, please be aware of a few potential post-installation procedures:
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This must be done with a professional-grade scan tool 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 cross-reference for numerous part numbers, including 25835966, 15943678, 20939137, 22860591, and more, ensuring wide compatibility across the GM truck and SUV lineup from 2007-2013.
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and factory-installed options into the module before shipping. This makes the BCM a plug-and-play part, eliminating the need for expensive dealership programming.
Where is the BCM located on my 2013 GMC Sierra?
The Body Control Module is typically found under the driver’s side of the dashboard, often attached to a bracket near the steering column or behind the kick panel.
Will this fix my airbag light with code B1001?
A faulty BCM is a common cause of the B1001 code. Replacing it with this programmed module should resolve the issue, but you will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a capable scan tool to clear the light after installation.
Is this a new or used part?
This is a high-quality, OEM-standard component that has been thoroughly inspected and prepared to ensure it meets or exceeds original factory performance. It comes with a one-year warranty for your peace of mind.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle.