Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your vehicle? Flickering lights, unresponsive power windows, a malfunctioning security system, or strange HVAC behavior are common signs that your Body Control Module (BCM) is failing. The BCM acts as the central command center for your truck’s body electronics. When it malfunctions, it can cause a cascade of confusing and disruptive issues. This genuine GM Body Control Module, interchangeable with part number 20939137 and 25844480, is the definitive solution for a wide range of 2007-2013 GM trucks and SUVs, including the Chevrolet Silverado, GMC Sierra, Tahoe, and Escalade.
The Plug-and-Play Advantage: Pre-Programmed for Your Vehicle
Forget expensive dealership visits and complex programming tools. We take the hassle out of the repair by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that it communicates flawlessly with your vehicle’s other electronic systems right out of the box. It arrives ready for a straightforward, plug-and-play installation, restoring factory functionality and resolving persistent diagnostic trouble codes (DTCs) without any additional setup.
Symptoms Solved by a New 2013 Silverado 2500 BCM
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC system failures, including a blower motor that won’t turn on or works intermittently.
- ✔ An illuminated airbag warning light, often accompanied by DTC B1001.
- ✔ Security system malfunctions that may prevent the vehicle from starting.
- ✔ Intermittent stalling, misfires, or other performance issues tied to electrical faults.
- ✔ A variety of communication-related DTCs stored in the vehicle’s memory.
Installation and Post-Install Considerations
Physically installing the BCM is simple. It is typically located under the driver’s side dashboard, near the steering column, and can be swapped out in minutes. However, after installation, some vehicles may require additional electronic procedures. If the airbag warning light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This re-syncs the new BCM with the airbag system. Additionally, a Brake Pedal Position Relearn may be necessary on certain models to ensure correct brake light and traction control operation. This module requires no core return, so you can keep your old part without any extra charge or hassle.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, door locks, lighting, wipers, security system, and climate controls. It’s the brain for your vehicle’s body electronics.
Why is VIN programming so important for this part?
VIN programming loads your vehicle’s specific software and options into the BCM. Without it, the module won’t recognize your vehicle’s features, leading to incorrect operation or complete failure of certain systems. Our pre-programming makes it a true plug-and-play part.
Is this BCM difficult to install myself?
The physical replacement is very easy for most DIY mechanics, usually taking less than 15 minutes with basic tools. It’s located under the steering column. The only potential difficulty is if post-installation electronic procedures, like an airbag system sync, are required, which need a professional scan tool.
What happens if my airbag light is on after I install the new BCM?
This is a known possibility. It means the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). A repair shop with an advanced diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No. This product has no core charge. You can keep or dispose of your original module without needing to send it back to us.