Restore Full Electrical Function to Your GM Truck or SUV
Is your Silverado, Sierra, Tahoe, or other GM vehicle plagued by frustrating electrical gremlins? Intermittent wipers, flickering lights, non-responsive door locks, or a dead HVAC system are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of confusing and unpredictable issues. This genuine OEM-quality GM Body Control Module, part number 25844480, is the definitive solution. It arrives at your door fully pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and ensuring a seamless, plug-and-play installation.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operate erratically or not at all.
- ✔ Interior or exterior lights flicker, stay on, or won’t turn on.
- ✔ The HVAC system is unresponsive, or the blower motor works intermittently.
- ✔ Your vehicle’s security system malfunctions, causing false alarms or starting issues.
- ✔ The airbag warning light is illuminated, often with a DTC B1001 code.
- ✔ Unexplained battery drain (parasitic draw) when the vehicle is off.
- ✔ Wipers won’t turn off or behave unpredictably.
The Solution: A VIN Programmed GM BCM
Don’t settle for a generic module that requires costly dealer calibration. We take the guesswork out of the repair. When you order from us, we use the latest GM software updates to program this module specifically to your vehicle’s VIN. This ensures all factory-installed options work correctly from the moment you plug it in. This is the most reliable way to perform this repair, restoring your vehicle’s performance and preventing the communication errors common with non-programmed modules. This high-quality replacement for your Programmed GM BCM is built to meet or exceed original equipment standards for a long-lasting, dependable repair.
Simple Installation and Post-Install Notes
Installation is straightforward for any DIYer or professional technician. The BCM is typically located under the driver’s side dashboard, near the steering column. The physical swap takes just a few minutes. While our VIN programming handles the majority of the setup, be aware of these potential post-installation procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a technician will need to use a professional scan tool to perform the “Setup SDM Primary Key in BCM” function. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light and traction control operation.
This part requires no core charge, so you can keep your old module without the hassle of returning it.
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 electronic functions. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the climate control system.
Is this BCM truly plug-and-play?
Yes, it is. We pre-program the module to your vehicle’s VIN before shipping. This means you can install it without needing a trip to the dealership for additional programming, saving you time and money.
Why is my airbag light on after installing the new BCM?
This can happen because the new BCM needs to be electronically introduced to the vehicle’s airbag system (SDM). A simple procedure called “Setup SDM Primary Key in BCM” must be performed with a compatible professional scan tool to clear the light.
Where is the BCM located on my 2013 Sierra 3500?
On most 2007-2013 GM trucks and SUVs, including the Sierra, the BCM is located under the driver’s side of the dashboard, usually to the left of the steering column.
Do I need to send my old part back?
No. There is no core charge for this part. You can keep or dispose of your old module without any obligation to return it.
Will this fix my intermittent power windows and door locks?
Yes, erratic power windows and locks are among the most common symptoms of a failing BCM. Replacing it with this programmed unit is the correct and most effective repair for these issues.