Restore Full Control and Reliability to Your GM Truck or SUV
Are you battling frustrating electrical issues in your truck? Flickering lights, a dead A/C, power windows with a mind of their own, or stubborn warning lights that won’t go away? These aren’t just annoyances—they’re signs of a failing Body Control Module (BCM), the electronic nerve center of your vehicle. This genuine GM BCM, interchangeable with part number 25844479, arrives pre-programmed to your vehicle’s specific VIN, offering a direct, hassle-free solution to restore the performance and dependability you rely on every day.
Common Symptoms & Your Solution
A faulty BCM can cause a cascade of confusing problems. If you’re experiencing any of the following, this module is the definitive fix:
- Intermittent or total loss of HVAC and blower motor controls.
- An illuminated airbag warning light, often with DTC B1001.
- Power windows, door locks, or interior/exterior lights that work sporadically or not at all.
- Malfunctions with the security system, leading to no-start conditions or stalling.
- A host of diagnostic trouble codes (DTCs) related to body systems.
Instead of a costly trip to the dealership for diagnostics and programming, our VIN programmed GM BCM 25844479 is delivered ready for a straightforward, plug-and-play installation.
Features & Benefits
- ✔ Ready to Install, No Dealer Needed: We pre-program the module to your vehicle’s VIN. This ensures all existing features work perfectly right out of the box, saving you hundreds in dealership programming fees.
- ✔ Fixes Annoying Electrical Gremlins: Restore precise control over your vehicle’s essential functions, from power locks and windows to the climate control system, for a more comfortable and predictable driving experience.
- ✔ Built for Durability: Manufactured to strict OEM standards, this BCM is designed to withstand the daily demands of a work truck or family SUV, ensuring long-term reliability.
- ✔ Guaranteed Compatibility: This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 25844480, 20939137, and more, guaranteeing a perfect fit for your vehicle.
- ✔ Peace of Mind Included: This unit is backed by our one-year replacement warranty.
Expert Insight: Get Your Work Truck Back on the Job
We know that for a Silverado or Sierra 3500 owner, downtime is lost money. A truck with a faulty BCM isn’t just an inconvenience; it’s a liability. Imagine trying to lock up valuable tools with malfunctioning door locks, or driving at night with unreliable headlights. This isn’t just about comfort—it’s about security and safety. By providing a VIN programmed GM BCM 25844479, we eliminate the diagnostic guesswork and the time wasted at a service center. The installation is often completed in under 5 minutes, getting your rig back to 100% and back to work where it belongs.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, security systems, and the HVAC system. When it fails, these systems can become erratic or stop working entirely.
Is this module truly plug-and-play?
Yes. Because we program it to your vehicle’s VIN before shipping, it is ready for immediate installation and operation. It learns your vehicle’s specific configuration, so you don’t have to visit a dealer for additional programming.
What if my airbag light is still on after installation?
In some cases, particularly if you had an airbag code like B1001, a final sync procedure is needed. This is called ‘Setup SDM Primary Key in BCM’ and can be performed with a professional-grade scan tool. It’s a simple step that allows the new BCM to communicate correctly with the airbag system.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep or dispose of your old module without any extra hassle or fees.
What tools are needed for installation?
Installation is typically very simple and requires basic hand tools, such as a socket set or a screwdriver, to remove the lower dash panel beneath the steering column where the BCM is located.
Will this BCM fit my vehicle?
This module fits a wide range of 2007-2013 General Motors trucks and SUVs. Please review the detailed fitment list on this page or contact us with your VIN to confirm perfect compatibility for your vehicle.