Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical problems in your vehicle? Flickering lights, unresponsive power windows, a malfunctioning security system, or erratic HVAC controls are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing issues. This genuine quality GM BCM, part number 25844480, is the definitive solution for your 2007-2013 GM truck or SUV, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play installation.
From the Diagnostic Bay
We had a 2013 Silverado 2500 in the shop with a classic case of ‘gremlins.’ The owner reported the radio would turn off, the dome light would flicker, and the power locks worked intermittently. Initial checks on the battery and alternator were fine. While these symptoms scream ‘BCM,’ we always check the basics first. We found a loose ground connection on the frame rail under the driver’s door. After cleaning and tightening it, half the problems vanished, but some remained. A scan revealed communication loss codes with the BCM. Installing a new, programmed BCM fixed the remaining issues completely. It’s a powerful reminder: always confirm your grounds during a BCM replacement to ensure a lasting repair.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or failing to turn on.
- ✔ HVAC and climate control blower motor not working or functioning intermittently.
- ✔ Vehicle security system malfunctions, including false alarms or starting issues.
- ✔ The airbag warning light is illuminated, often with a DTC B1001 code.
- ✔ Unexplained battery drain while the vehicle is off.
- ✔ Horn honking unexpectedly or not working when pressed.
The Plug-and-Play Solution: A Pre-Programmed 2013 Silverado 2500 BCM
Forget expensive dealership visits and programming fees. We take the hassle out of the repair by programming this module to your vehicle’s specific VIN before it ships. This ensures that all factory settings and operational parameters are perfectly matched to your truck, just as it came from the factory. This module is a direct replacement for a wide range of part numbers, including 25823558, 25835966, 15943678, and 20939137, making it the ideal component for your repair. Built to strict OEM standards, it restores the precise control you need over your vehicle’s essential functions.
Installation and Post-Install Notes
Installation is typically straightforward. The BCM is located under the driver’s side dashboard, near the steering column. The physical swap takes only a few minutes. However, please be aware of potential post-installation procedures. If the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, some models may require a ‘Brake Pedal Position Relearn’ to ensure proper brake light and stability control operation. There is no core charge for this part, so you can keep your old module without any hassle.
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 module ready to install out of the box?
Yes! We pre-program the module to your vehicle’s VIN before shipping. This makes it a plug-and-play installation with no need for additional dealership programming.
What if my airbag light is on after installation?
If the airbag light appears, you will need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with your vehicle’s airbag system.
Do I need to send my old part back?
No, there is no core charge on this BCM. You can keep your original part without any extra fees or hassle.
How can I be sure this part fits my vehicle?
This module fits a wide range of 2007-2013 GM trucks and SUVs. It is a direct replacement for numerous part numbers, including 25823558, 25835966, and 25844480. Providing your VIN during checkout ensures we program it for a perfect match.