Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a storm of strange electrical problems in your truck? Flickering lights, unresponsive power windows, a dead HVAC system, or a security light that won’t turn off 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 quality GM 25844480 BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
From the Diagnostic Bay
We recently had a 2009 Sierra 1500 in the shop that was a textbook case of BCM failure. The owner complained that the radio would stay on after he left the truck, the power locks worked intermittently, and the air conditioning was completely dead. He had already spent a small fortune replacing fuses and relays to no avail. A quick scan with a diagnostic tool revealed multiple communication errors pointing directly to the BCM. After installing a VIN-programmed module just like this one, every single issue was resolved in under 10 minutes. It’s the central hub for so many functions that it’s often the root cause of these seemingly unrelated electrical gremlins.
Common Symptoms of a Failing BCM
- ✔ Unresponsive power windows, door locks, or interior/exterior lights.
- ✔ HVAC system is stuck on one setting or the blower motor won’t work at all.
- ✔ The security system acts erratically, preventing the vehicle from starting.
- ✔ An airbag warning light is illuminated on the dashboard, often with DTC B1001.
- ✔ The instrument cluster behaves strangely or loses power intermittently.
- ✔ A flood of various and seemingly unrelated diagnostic trouble codes (DTCs).
The Superior Solution: A Programmed 2007-2011 Sierra 1500 BCM
Don’t settle for a generic module that requires an expensive trip to the dealership for programming. We take care of the hard part for you. By programming this module to your vehicle’s VIN before it ships, we ensure it integrates seamlessly with your existing systems. It’s loaded with the latest GM software updates to correct known issues and optimize performance. This direct-replacement BCM, also known by part numbers 15940214, 25835966, and 20939137, restores the precise control and reliability you expect from your vehicle.
Installation and Post-Install Procedures
Physically installing the BCM is straightforward. It is typically located under the driver’s side dashboard, near the steering column, and can be swapped out in minutes. However, depending on your vehicle’s configuration, some post-installation steps may be necessary.
- Airbag System Sync: If the airbag warning light appears after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This must be done with a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
This is a hassle-free purchase with no core charge, so you can keep your old part. By choosing our pre-programmed 2007-2011 Sierra 1500 BCM, you’re getting a reliable, simple, and effective fix to get your truck back in perfect working order.
Frequently Asked Questions
What does a Body Control Module do on my 2008 Sierra?
The BCM acts as the central computer for your truck’s non-engine related electronics. It controls functions like power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC system.
Is this BCM ready to install right out of the box?
Yes. We pre-program the module to your vehicle’s VIN before shipping. This makes the installation plug-and-play, with no need for additional dealership programming for most functions.
What if my airbag light is on after I install the new BCM?
This is a known possibility. You will need to have a technician with an advanced diagnostic tool perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the new module with your vehicle’s airbag system.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module without any extra fees.
Where is the BCM located on a 2010 GMC Sierra 1500?
The BCM is located inside the cabin, typically under the driver’s side of the dashboard near the steering column.
Will this part fit my 2008 Chevy Silverado?
Yes, this BCM is compatible with a wide range of 2007-2013 GM trucks and SUVs, including the Chevrolet Silverado, Tahoe, Suburban, and Avalanche, as well as the GMC Yukon and Cadillac Escalade. Please verify the part number for your specific vehicle.