Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your 2013 GMC Sierra 2500? Flickering lights, a dead radio, unresponsive power windows, or a persistent airbag light can often be traced back to a single component: a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it malfunctions, it can cause a cascade of confusing and seemingly unrelated issues. This genuine GM Body Control Module, part number 25790509 (interchangeable with 25844480 and others), is the definitive solution to restore your truck’s performance and reliability.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to turn on.
- ✔ HVAC system problems, such as the blower motor not working or temperature controls being unresponsive.
- ✔ An illuminated airbag warning light, often with a DTC B1001 code.
- ✔ Security system malfunctions, leading to no-start conditions or random alarm activation.
- ✔ Wipers behaving unpredictably or not parking in the correct position.
Why Choose Our Programmed 2013 Sierra 2500 BCM?
Getting your truck back on the road shouldn’t be complicated. Our key advantage is the pre-installation VIN programming. When you order from us, we flash the module with your vehicle’s specific Vehicle Identification Number and the latest GM software updates. This ensures that the BCM is a true plug-and-play component. You can avoid the costly trip to the dealership for programming, saving you both time and money. This module is built to strict OEM standards for durability and is backed by our one-year warranty.
Installation and Post-Install Notes
The BCM is typically located under the driver’s side dashboard, near the steering column. The physical replacement is straightforward and can often be completed in under 10 minutes. However, please be aware of potential post-installation procedures:
- Airbag System Sync: If the airbag warning light remains on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. This re-syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and stability control function.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15943678, 25790508, 25823558, 25844479, 20939137, and 22860591. Restore your vehicle’s electronic systems with confidence.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that controls and monitors most of your vehicle’s non-engine-related electronics. This includes power windows, locks, lights, wipers, the security system, and HVAC controls.
Is this 2013 Sierra 2500 BCM ready to install out of the box?
Yes! We program the module to your vehicle’s VIN before shipping. This makes it a plug-and-play installation, eliminating the need for additional dealership programming for most functions.
What if my airbag light is on after installation?
This is a common security feature. You will need a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the new module with the airbag system and turn off the light.
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.
Where is the BCM located on my truck?
On most 2007-2013 GM trucks and SUVs like the Sierra, Silverado, and Tahoe, the BCM is located under the driver’s side dashboard, typically to the left of the steering column.