Restore Full Command Over Your Vehicle’s Electronics
Are erratic lights, unresponsive power windows, or a malfunctioning HVAC system turning your dependable GM truck or SUV into a source of daily frustration? These nagging electrical gremlins often point to a single culprit: a failing Body Control Module (BCM). This genuine GM 25844480 BCM, pre-programmed to your vehicle’s specific VIN, is the definitive solution to restore the seamless functionality you rely on. Stop chasing down individual electrical issues and fix the root cause with a reliable, plug-and-play component designed for your vehicle.
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 solution you need:
- Intermittent or Dead Accessories: Power windows, door locks, interior/exterior lights, or windshield wipers that work one minute and not the next.
- HVAC Control Failure: Inability to adjust fan speed, temperature, or airflow direction.
- Security System Malfunctions: False alarms, starting issues, or a vehicle that won’t recognize your key fob.
- Warning Lights: An airbag light on the dash, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- Communication Errors: Various DTCs that indicate a loss of communication between different vehicle modules.
By installing our expertly programmed 2013 GMC Sierra 3500 Body Control Module, you directly address these issues, eliminating the need for expensive diagnostic guesswork and costly dealership programming.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s VIN. Simply install it, and you’re ready to go—no additional programming or trips to the dealer are required.
- ✔ Restored Functionality: Regain complete and reliable control over all body electronics, from your power locks and windows to your climate control and lighting systems.
- ✔ OEM-Quality Performance: Built to strict General Motors standards, ensuring the same durability, reliability, and performance as the original part that came with your truck.
- ✔ Broad Compatibility: An exact replacement for a wide range of part numbers, including 25835966, 15943678, 20939137, and 22860591, ensuring a perfect fit for many GM trucks and SUVs.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Grounding Connection
From my 20+ years in diagnostics, I can’t stress this enough: a bad ground is the silent killer of electronic modules. When replacing your 2013 GMC Sierra 3500 Body Control Module, take an extra five minutes to inspect and clean the main BCM ground point. It’s often located on the metal dashboard support or A-pillar. A clean, tight ground connection ensures stable voltage and can prevent the new module from failing prematurely. This simple step is the #1 thing DIYers and even some pros overlook, and it’s the key to a lasting repair.
Whether you’re getting your work truck back to 100% reliability or restoring the comfort and convenience features of your family SUV, this programmed 2013 GMC Sierra 3500 Body Control Module is the most effective and efficient solution available. Take control of your vehicle’s health and get back on the road with confidence.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It manages non-engine related functions like power windows, door locks, interior and exterior lighting, the security system, HVAC controls, and windshield wipers.
Is this part difficult to install?
Installation is typically straightforward for someone with basic mechanical skills. The BCM is usually located under the driver’s side dashboard near the steering column. The process generally takes less than 30 minutes and involves disconnecting the battery and swapping a few electrical connectors.
Why is VIN programming so important?
VIN programming loads your vehicle’s specific software and options into the module. This ensures all features work correctly right out of the box, just as the factory intended. Without it, the module won’t be able to communicate properly with other computers in your vehicle, leading to malfunctions.
Will this fix my airbag light with code B1001?
Yes, a faulty BCM is a common cause of this code. However, after installation, you may need to perform a “Setup SDM Primary Key in BCM” procedure using a professional-grade scan tool to sync the new BCM with the airbag system and clear the light.
Do I need to send my old part back?
No. We do not require a core return for this part. You can keep your old module, which saves you the time, cost, and hassle of shipping it back.
How do I confirm this fits my vehicle?
Please review the detailed fitment list on this page. This module is a direct replacement for numerous original part numbers and fits a wide range of 2007-2013 GM trucks and SUVs. Matching your vehicle and year is the best way to ensure compatibility.