Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a storm of strange electrical problems in your Chevrolet Silverado, GMC Sierra, or Tahoe? Flickering lights, unresponsive power windows, a malfunctioning security system, or an HVAC system with a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause widespread and frustrating issues. This genuine OEM-quality GM BCM, part number 25844480, is the definitive solution, delivered pre-programmed to your vehicle’s VIN for a simple, plug-and-play installation.
Is Your Vehicle Showing These BCM Failure Symptoms?
- ✔ Unresponsive or erratic power windows, door locks, or interior/exterior lights.
- ✔ HVAC controls not working correctly, or the blower motor is stuck on one speed or won’t turn on at all.
- ✔ The security system acts up, causing no-start conditions, stalling, or random alarm activation.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC B1001.
- ✔ Multiple, unrelated diagnostic trouble codes (DTCs) related to body systems are present.
- ✔ Wipers operate intermittently or not at all.
Why Choose Our Programmed 2007-2011 Silverado 3500 BCM?
This isn’t just a replacement part; it’s a complete, hassle-free solution. We handle the complex programming for you. Simply provide your vehicle’s VIN during checkout, and the module will arrive loaded with the latest GM software specific to your truck. This eliminates the need for an expensive trip to the dealership for programming, making the installation process straightforward and fast. Built to strict OEM standards, this module ensures reliable performance and longevity, putting an end to your electrical headaches. It is a direct replacement for a wide range of part numbers, including 15943678, 25835966, 20939137, and 22860591.
Installation and Post-Install Procedures
Installation is simple for any DIYer with basic tools. The BCM is typically located under the driver’s side dashboard, near the steering column. In most cases, it’s a direct swap. However, please be aware of the following potential post-installation steps:
- Airbag System Sync: If the airbag warning light is on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure using a professional-grade diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC system.
Do I need to have a dealer program this BCM?
No. This BCM comes fully programmed to your vehicle’s specific VIN number before it ships. It is ready for installation right out of the box, saving you time and money.
Where is the BCM located on my 2008 Silverado?
On most 2007-2013 GM trucks and SUVs, including the Silverado, the BCM is located under the driver’s side of the dashboard, usually to the left of the steering column.
What if the airbag light is on after I install the new module?
This is a common security measure. You or your mechanic will need to use a compatible high-end scan tool to perform the “Setup SDM Primary Key in BCM” function to sync the modules and turn off the light.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module without any extra fees or hassle.
Will this part fix my intermittent HVAC blower?
Yes, a faulty BCM is a very common cause of HVAC blower motor issues, such as intermittent operation or being stuck on a single speed. This part is designed to correct those problems.