Restore Full Electrical Function to Your GM Truck
Are you battling frustrating electrical problems in your truck? Intermittent wipers, flickering lights, unresponsive power windows, or a malfunctioning security system are common signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing issues. This genuine OEM-quality Body Control Module, part number 25835966, is the definitive solution for your 2007-2011 GMC Sierra 2500 and a wide range of other GM trucks and SUVs. It arrives pre-programmed to your vehicle’s VIN, ensuring a seamless, plug-and-play installation without requiring a costly trip to the dealership.
Symptoms of a Failing Sierra 2500 Body Control Module
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, dome lights, dash lights) staying on or not turning on.
- ✔ HVAC system failure, including an unresponsive blower motor or incorrect temperature control.
- ✔ Vehicle security system acting up, causing no-start conditions or false alarms.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Communication errors with other modules, leading to various diagnostic trouble codes (DTCs).
Plug-and-Play Solution with VIN Programming
The biggest hurdle in replacing a modern vehicle module is programming. We eliminate this step for you. Simply provide your vehicle’s VIN at checkout, and our technicians will program this BCM with the latest GM software specific to your truck’s configuration. This ensures that all existing features work correctly right out of the box. This module is a direct replacement for multiple part numbers, including 25844480, 15943678, 20939137, 22860591, and more, guaranteeing a perfect fit and function.
Installation and Post-Install Considerations
Installation is straightforward for DIYers and professionals alike. The BCM is typically located under the driver’s side dashboard, near the steering column. While the physical swap takes only a few minutes, be aware of potential post-installation procedures. If the airbag warning light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, a ‘Brake Pedal Position Relearn’ may be necessary on some models to ensure proper brake light and traction control operation. Always consult a factory service manual for your specific vehicle if you are unsure.
Frequently Asked Questions
What does a Body Control Module do on a GMC Sierra?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, lighting, wipers, the security system, and the HVAC climate control system.
Is this BCM ready to install out of the box?
Yes! This module is pre-programmed to your vehicle’s specific VIN before shipping. This makes it a true plug-and-play part, eliminating the need for additional programming by a dealership.
Where is the BCM located on a 2007-2011 Sierra 2500?
The Body Control Module is located inside the cabin, under the driver’s side of the dashboard, typically near the steering column and fuse box area.
What happens if the airbag light is on after installation?
If the airbag light is on, it means the new BCM needs to be synchronized with the airbag system’s SDM module. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your old module, which saves you the time and hassle of shipping it back.