End Your Truck’s Electrical Nightmares
Are you battling a frustrating series of electrical issues in your truck? Flickering lights, unresponsive power windows, a climate control system with a mind of its own, or warning lights that won’t go away are classic signs of a failing Body Control Module (BCM). This vital component is the central command for your vehicle’s body electronics. When it fails, it can make your dependable Sierra feel chaotic and unreliable. This replacement Body Control Module, pre-programmed to your vehicle’s specific VIN, is the definitive solution to restore order and get your truck’s systems functioning perfectly again.
Common Symptoms & Your Solution
A faulty BCM can cause a wide range of problems that may seem unrelated. If you’re experiencing any of the following, this module is the likely fix:
- Intermittent or non-working HVAC and blower motor controls.
- Power windows, door locks, or exterior/interior lights failing to operate correctly.
- An active airbag warning light, often with Diagnostic Trouble Code (DTC) B1001.
- Erratic security system behavior, causing no-start conditions or stalling.
- A variety of other electrical-related DTCs that point to a communication breakdown.
Instead of spending a fortune on diagnostic time and dealership programming fees, this VIN-programmed 2013 GMC Sierra 3500 body control module arrives ready for a straightforward, plug-and-play installation.
Features & Tangible Benefits
- ✔ Plug & Play Installation: This module is expertly programmed to your truck’s VIN before it ships. This means no additional, expensive programming is required at a dealership. Simply install it and go.
- ✔ Restored Functionality: Regain full, reliable control over all your truck’s essential body electronics—from the power locks and windows to the climate control and security system.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring dependable performance and longevity, whether you use your truck for work or daily driving.
- ✔ Broad Compatibility: This unit is a direct replacement for a wide range of part numbers, including 25844480, 25835966, 15943678, 20939137, and 22860591, providing a perfect fit for your 2007-2013 GM truck or SUV.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
From the Technician’s Bench: We see these GMT900 platform trucks all the time. A common mistake owners make is installing a used, non-programmed BCM, which only creates more problems. The BCM, SDM (airbag module), and other computers must communicate perfectly. Our VIN programming service ensures this digital handshake happens instantly upon installation, saving you from the dreaded “service airbag” light and other communication errors that can keep a vehicle off the road. This isn’t just a part; it’s a complete, integrated solution for your 2013 GMC Sierra 3500 body control module.
By installing this precision-programmed 2013 GMC Sierra 3500 body control module, you are not just replacing a faulty part—you are restoring the reliability and confidence you depend on from your truck every single day.
Frequently Asked Questions
Why is VIN programming so important for a BCM?
The BCM is tailored to your vehicle’s specific options, like the type of transmission, security system, and power accessories. VIN programming loads this exact configuration onto the module, ensuring all features work correctly without requiring a trip to the dealer for expensive calibration.
Will this fit models other than the 2013 GMC Sierra 3500?
Yes. This BCM is compatible with a wide range of 2007-2013 GM trucks and SUVs, including the Chevrolet Silverado, Tahoe, Suburban, Avalanche, and the GMC Yukon, as well as the Cadillac Escalade. Please check the fitment list on this page to confirm for your specific vehicle.
What tools do I need for installation?
Installation is typically very simple and requires basic hand tools, like a socket set or nut driver, to remove the lower dash panel. The module itself is usually held in by clips or a few small bolts and is located under the driver’s side dashboard.
My airbag light is still on after installation. What should I do?
In some cases, particularly if DTC B1001 was present, the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). This procedure, often called “Setup SDM Primary Key in BCM,” must be performed with a professional-grade bidirectional scan tool.
Is there a core charge for my old BCM?
No, there is no core charge. You can keep your old module without the hassle of returning it.
How do I know for sure that my BCM is the problem?
While the symptoms listed are strong indicators, the best way to confirm is with a proper diagnosis using a scan tool that can read body codes. A failing BCM will often set specific trouble codes and show a loss of communication with other modules on the vehicle.