Is Your Sierra 3500 Plagued by Electrical Gremlins?
If you’re dealing with a frustrating mix of electrical issues in your truck—from flickering lights and unresponsive door locks to a malfunctioning HVAC system—a failing Body Control Module (BCM) is the most likely culprit. For a workhorse like the GMC Sierra 3500, these aren’t minor annoyances; they’re problems that compromise safety, security, and your ability to get the job done. This VIN-programmed BCM is the definitive, hassle-free solution to restore full electrical control and reliability to your vehicle.
Common Symptoms & Your Solution
A faulty BCM can cause a cascade of confusing problems. This module is engineered to be the direct fix for these issues, arriving pre-programmed to your truck’s VIN for a true plug-and-play installation. Stop chasing symptoms and replace the core component responsible for:
- Intermittent or non-working power windows, door locks, and interior/exterior lights
- Complete loss of HVAC controls or a blower motor that won’t turn off
- An airbag warning light on the dash, often with DTC B1001
- Security system malfunctions that may prevent the truck from starting
- Strange electrical behavior, stalling, or communication errors between modules
By installing our pre-flashed 2013 GMC Sierra 3500 BCM, you eliminate the need for expensive dealership programming and get your truck’s essential systems working in perfect harmony again.
Features & Benefits
- ✔ Plug & Play Installation: This module is professionally programmed to your vehicle’s specific VIN number. This ensures immediate compatibility and function right out of the box, saving you hundreds in dealership fees and programming labor.
- ✔ Restored Functionality: Regain complete and reliable control over your truck’s critical body electronics, including lighting, security, power accessories, and climate control for a safer, more comfortable drive.
- ✔ Guaranteed Compatibility: Engineered to OEM specifications, this BCM is a direct replacement for a wide range of part numbers, including 15926094, 25844480, 25835966, and more, ensuring a perfect fit for your Sierra.
- ✔ No Core Charge: We don’t require you to send your old, faulty part back. This simplifies the repair process and gets you back on the road faster, without any hidden fees or return hassles.
- ✔ Dependable Coverage: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Work Truck Reliability
As a technician, I’ve seen countless Sierra and Silverado owners waste time and money trying to diagnose bizarre electrical issues one by one. The problem is that the BCM is the central nervous system for these functions. When it fails, it sends confusing signals everywhere. For a work truck, downtime is lost income. The single biggest advantage of a VIN-programmed module is certainty. You’re not just buying a part; you’re buying a solution that bypasses diagnostic guesswork and dealership delays, getting your essential vehicle back in service immediately.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. This allows for a simple plug-and-play installation without any need for additional programming or calibration at a dealership.
My airbag light is on. Will this BCM fix it?
This module often resolves the root cause of airbag codes like B1001. However, after installation, some vehicles may require a ‘Setup SDM Primary Key’ procedure using a professional scan tool to sync the new BCM with the airbag system and clear the light.
How difficult is the installation?
Installation is straightforward for those with basic mechanical skills. The BCM is typically located under the driver’s side dashboard, near the steering column. It usually takes less than 15 minutes to swap the modules. Always disconnect the battery before starting.
What if this doesn’t solve my problem?
While a faulty BCM is the cause of these symptoms in the vast majority of cases, we always recommend proper diagnosis. Ensure your vehicle’s grounds and wiring are in good condition. If the part does not resolve the issue, it is covered by our one-year replacement warranty.
Is this the correct part for my 2013 GMC Sierra 3500 BCM?
Yes, this module is a confirmed fit. It is also a direct replacement for numerous other GM trucks and SUVs from 2007-2013. You can verify compatibility by matching your original part number to the extensive interchange list in the product details.