Restore Your Sierra’s Electrical System and Get Back to Work
Are you dealing with frustrating electrical gremlins in your truck? Flickering lights, unresponsive power windows, or a climate control system with a mind of its own are all classic signs of a failing Body Control Module (BCM). For a dependable workhorse like your GMC Sierra 3500, these aren’t just annoyances—they’re problems that can disrupt your workday and compromise safety. This genuine GM BCM, part number 25971916 (interchangeable with 25844480), is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play installation.
Common Symptoms & Your Solution
A faulty BCM can cause a cascade of confusing issues. If you’re experiencing any of the following, this module is the component you need to restore full functionality. This replacement 2011 GMC Sierra 3500 body control module is engineered to resolve these exact problems:
- Power windows, door locks, or mirrors that work intermittently or not at all.
- Interior or exterior lights failing to operate correctly.
- HVAC and climate control blower motor issues.
- An active airbag warning light, often accompanied by DTC B1001.
- Erratic security system behavior or no-start conditions.
- A variety of diagnostic trouble codes (DTCs) related to body electronics.
Features & Benefits
- ✔ Plug-and-Play VIN Programming: We program the module to your truck’s VIN before it ships. This means no expensive trips to the dealership for coding—simply install it and restore your vehicle’s functions immediately.
- ✔ Restores Full Functionality: Get your power accessories, lighting, security, and climate systems working reliably again. This module ensures all components communicate correctly, just as they did from the factory.
- ✔ OEM-Quality & Durability: Built to strict General Motors standards for a perfect fit and long-lasting performance. This isn’t a cheap knock-off; it’s a dependable part designed to handle the demands of your heavy-duty truck.
- ✔ Solves Annoying Electrical Gremlins: Stop chasing down intermittent electrical faults. Replacing a faulty BCM is often the most direct way to solve a host of seemingly unrelated electronic issues.
- ✔ Warranty & Support: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
- ✔ Broad Compatibility: This BCM is a direct replacement for a wide range of GM trucks and SUVs from 2007-2013, including the Silverado, Tahoe, Suburban, Yukon, and Escalade, and is interchangeable with multiple part numbers like 25835966, 15943678, and 20939137.
Expert Insight: Check Your Grounds
As a veteran tech, I can’t stress this enough: before you condemn any module, check your grounds! On these GM trucks, a corroded or loose ground wire—especially the main one under the driver’s door on the frame rail—can mimic the exact symptoms of a bad BCM. When you install your new 2011 GMC Sierra 3500 body control module, take an extra 10 minutes to locate, clean, and tighten the primary body and battery grounds. This simple step can prevent a host of electrical issues and ensure your new part performs flawlessly for years to come.
Frequently Asked Questions
What does a Body Control Module do on my Sierra 3500?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like your power windows, door locks, interior and exterior lighting, wipers, security system, and even the climate controls. When it fails, these systems can become erratic.
Do I need to have this module programmed by a dealer?
No. The main benefit of our service is that we pre-program the module to your vehicle’s VIN before shipping. This makes the installation a simple plug-and-play process, saving you time and the high cost of dealership programming.
Is this part difficult to install?
The 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 physical swap takes only a few minutes with basic tools.
My airbag light is on. Will this BCM fix it?
A faulty BCM can cause an airbag light, often with code B1001. While this module will fix the root cause, you may need to perform an ‘SDM Key Update’ or ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool after installation to sync the new BCM with the airbag system and clear the light.
Is there a core charge?
No, there is no core charge on this part. You can keep your old module without the hassle of sending it back.
By choosing this pre-programmed 2011 GMC Sierra 3500 body control module, you’re not just buying a part—you’re getting a complete, hassle-free solution to get your truck back in top condition. Order today and restore the reliability you depend on.