Restore Full Electrical Function to Your GM Truck
Are you battling persistent and frustrating electrical problems in your 2007-2013 GM truck or SUV? Symptoms like malfunctioning power windows, erratic door locks, a non-responsive HVAC system, or mysterious warning lights on your dash often point to a single culprit: a failing Body Control Module (BCM). This component is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of issues. This OEM-quality GM BCM, part number 25844480 (interchangeable with 15878753), is the definitive, reliable solution to restore your vehicle’s performance and comfort.
Common Symptoms of a Failing BCM
- ✔ Intermittent or total loss of HVAC controls and blower motor function.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Power windows, door locks, or exterior/interior lights that work sporadically or not at all.
- ✔ Security system malfunctions, causing no-start conditions, stalling, or misfires.
- ✔ A variety of diagnostic trouble codes (DTCs) related to body functions and communication errors.
The Plug-and-Play Solution for Your Sierra Denali 3500 BCM
What sets our modules apart is the crucial pre-programming service. We flash this BCM with the latest GM software updates and program it specifically to your vehicle’s VIN before it ships. This means it arrives at your door ready for a direct, plug-and-play installation. You can bypass the time, hassle, and high cost of having a dealership program the module. This service ensures seamless communication between the new BCM and your truck’s other electronic systems, restoring functionality right out of the box.
Installation is straightforward for any DIY mechanic. The BCM is located under the driver’s side dashboard near the steering column and can typically be swapped in under 5 minutes. While the module is plug-and-play, be aware of two potential post-installation procedures. If the airbag light remains on, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” function. Additionally, some models may require a Brake Pedal Position Relearn to ensure proper brake light and traction control operation. This module comes with a one-year warranty and requires no core return, making your repair process as simple as possible.
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 manages non-engine related functions like the interior and exterior lights, power windows, door locks, security system, wipers, and the HVAC climate control system.
Is this BCM truly plug-and-play?
Yes. Because we pre-program the module to your vehicle’s specific VIN, it is ready to install and function immediately. This eliminates the need for additional programming at a dealership, which is required for unprogrammed modules.
My airbag light is on. Will this BCM fix it?
A faulty BCM is a common cause of an airbag light with code B1001. Replacing it often resolves the issue. However, if the light stays on after installation, the new BCM needs to be synced with the airbag system using a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Where is the BCM located on a 2013 Sierra Denali 3500?
You will typically find the Body Control Module located under the driver’s side dashboard, securely mounted near the steering column for easy access.
Do I need to send my old part back?
No, there is no core charge associated with this part. You can keep your original module without any extra fees or hassle.