Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your GMC Sierra, Chevy Silverado, or Tahoe? Flickering lights, unresponsive power windows, a malfunctioning security system, or an erratic HVAC system 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 and disruptive issues. This genuine OEM-quality 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.
Symptoms of a Failing Body Control Module
- ✔ Power windows, door locks, or mirrors not working or operating on their own.
- ✔ Interior or exterior lights staying on, flickering, or not turning on at all.
- ✔ HVAC and climate control functions are inoperative or behaving erratically.
- ✔ Vehicle security system malfunctioning, causing no-start conditions or false alarms.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Wipers not working correctly or activating randomly.
- ✔ A variety of communication-related Diagnostic Trouble Codes (DTCs).
The Right Solution: A Programmed 2013 Sierra 2500 BCM
Don’t settle for a generic module that requires expensive dealership programming. We take the hassle out of the repair by programming this module with the latest GM software updates specifically for your vehicle’s VIN. This ensures that all vehicle options and security protocols are correctly configured right out of the box. Installation is simple, typically located under the driver’s side dashboard near the steering column. In most cases, it’s a direct swap that restores function immediately. For vehicles displaying an airbag light, a post-installation ‘Setup SDM Primary Key’ procedure may be required using a capable diagnostic scan tool.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15943678, 25790508, 25835965, 25971916, 25971917, 20939137, and 22860591.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions. This includes power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM ready to install out of the box?
Yes! This module is professionally programmed to your vehicle’s VIN before shipping. This makes it a plug-and-play solution that does not require any additional dealership programming for most functions.
Where is the BCM located on my 2013 Sierra 2500?
The Body Control Module is typically located under the driver’s side of the dashboard, often to the left of the steering column. It’s an accessible part that can usually be replaced in under 10 minutes.
My airbag light is on after installation. What should I do?
If the airbag light is on, you will need to have a technician with a professional-grade scan tool perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system and is a necessary security step.
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.