Restore Your Truck’s Central Command
Are you battling a storm of strange electrical problems in your truck? One moment the power windows won’t work, the next the A/C is dead, and a mysterious warning light is lit up on your dash. These frustrating, seemingly random issues often point to a single culprit: a failing Body Control Module (BCM). The BCM is the electronic brain for your truck’s body and cabin functions. When it fails, it can make your dependable Sierra feel unreliable. This genuine GM BCM, pre-programmed to your vehicle’s specific VIN, is the definitive solution to restore order and get your truck working exactly as it should.
Common Symptoms & Your Solution
A faulty BCM can cause a wide range of issues that can disrupt your workday and compromise your vehicle’s functionality. If you’re experiencing any of the following, this module is the fix you need. It directly addresses problems like:
- Intermittent or total loss of HVAC and blower motor controls.
- Non-functional power windows, door locks, or interior/exterior lights.
- An active airbag warning light, often with DTC B1001.
- Security system malfunctions that may prevent the truck from starting.
- Erratic wiper operation or other electrical gremlins.
Installing this pre-programmed 2013 GMC Sierra 3500 Body Control Module will resolve these issues, clearing related diagnostic trouble codes and restoring the essential functions you rely on every day.
Features & Benefits
- ✔ Plug & Play Installation: This module arrives pre-programmed to your truck’s VIN. There is no need for an expensive trip to the dealership for additional programming—simply install it and restore functionality in minutes.
- ✔ Restores Full Functionality: Regain dependable control over your truck’s critical body electronics, from the climate control and power accessories to the security system.
- ✔ OEM-Standard Quality: Built to meet or exceed General Motors’ strict standards for performance and durability, ensuring a reliable, long-lasting repair for your hardworking vehicle.
- ✔ Clears Common DTCs: Specifically programmed to resolve persistent trouble codes related to body systems, including the common airbag system code B1001, after the proper sync procedure is performed.
- ✔ Guaranteed Compatibility: This module is a direct replacement for a wide range of part numbers, including 25971916, 25844480, 20939137, and 22860591, ensuring a perfect fit for your 2013 GMC Sierra 3500 Body Control Module.
- ✔ No Core Charge: You are not required to return your old, faulty part, saving you time and hassle.
- ✔ Peace of Mind 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 customer will come in complaining that their A/C quit, but their power locks also failed last week. They think they have multiple expensive problems. Nine times out of ten, it’s the BCM. A crucial but often overlooked step during replacement is checking the main ground points, especially the one on the A-pillar near the module. A poor ground can cause voltage spikes that damage the new module over time. Taking an extra five minutes to clean that connection ensures a permanent fix and prevents a comeback. This pre-programmed module makes the job easy, but good groundwork makes it last.”
Frequently Asked Questions
What does a BCM do on my Sierra 3500?
The Body Control Module, or BCM, acts as the central computer for your truck’s cabin and body electronics. It manages non-engine related functions like your lights, power windows and locks, climate control (HVAC), security system, and wipers.
Is this module difficult to install?
No, the installation is straightforward for someone with basic mechanical skills. The BCM is typically located under the driver’s side dashboard, near the steering column. The process usually takes less than 10 minutes. Since it comes pre-programmed, no special computer tools are needed for the initial setup.
Why is VIN programming so important?
VIN programming loads your truck’s specific software and configurations onto the module before it ships. This ensures all the features your vehicle was built with (like power-folding mirrors, specific lighting, etc.) work correctly right out of the box. It eliminates the need for expensive dealership programming.
What if my airbag light stays on after installation?
If the airbag light remains on (often with code B1001), it means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). This is a simple security sync procedure called ‘Setup SDM Primary Key in BCM’ that can be performed with a professional-grade scan tool.
Will this fix my specific electrical problem?
This 2013 GMC Sierra 3500 Body Control Module is the solution for the vast majority of issues listed in the description, such as failing power accessories, HVAC, and lighting. While it’s the most common point of failure, you should always ensure your vehicle’s wiring and fuses are in good condition.
Do I need to send my old part back?
No. We do not require you to return your original module. There is no core charge associated with this purchase, making the process faster and more convenient for you.