Restore Full Electrical Control to Your GM Truck
Are you battling strange and frustrating electrical issues in your GMC Sierra, Chevy Silverado, or Cadillac Escalade? Intermittent wipers, malfunctioning power locks, a dead HVAC system, or a persistent airbag light are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it malfunctions, it can make your truck feel unpredictable and unreliable. This genuine GM-quality Body Control Module, part number 25844480, is the definitive solution. It arrives pre-programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation that restores function 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:
- ✔ Non-responsive or erratic power windows, door locks, or interior/exterior lighting.
- ✔ HVAC system failure, including a blower motor that won’t turn on or can’t be controlled.
- ✔ An illuminated airbag warning light, often accompanied by diagnostic trouble code (DTC) B1001.
- ✔ Security system malfunctions, leading to no-start conditions or random alarm activation.
- ✔ Intermittent stalling, misfires, or other performance issues linked to poor grounding signals from the BCM.
- ✔ A dashboard that looks like a Christmas tree with multiple, unrelated warning lights.
Installation and Post-Install Considerations
Replacing the BCM is a straightforward process for most DIY mechanics. The module is typically located under the driver’s side dashboard, near the steering column. Because this unit is pre-programmed to your VIN, the physical installation is plug-and-play. However, depending on your vehicle’s specific configuration, a couple of post-installation procedures may be necessary:
- Airbag System Sync: If the airbag light remains on after installation, a technician will need to use a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. This re-establishes communication between the new BCM and the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM trucks and SUVs from 2007-2013. It is fully interchangeable with part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591. Order with confidence, knowing you’re getting a quality part built to OEM standards and backed by a one-year warranty.
Frequently Asked Questions
What does a Body Control Module do on a GMC Sierra?
The BCM is a computer that manages and controls many of your truck’s non-engine related electronic functions. This includes power windows, door locks, the security system, interior and exterior lights, wipers, and the HVAC climate control system.
Will this BCM require programming at a dealership?
No. This module is sold pre-programmed to your vehicle’s VIN. This allows for a direct, plug-and-play installation without the need for expensive dealership programming tools.
Is this BCM difficult to install?
The physical installation is simple for most individuals with basic tools. It’s located under the steering column and typically takes less than 15 minutes to swap out. However, be aware that post-install procedures like an airbag system sync may require a professional scan tool.
What happens if I don’t replace a failing BCM?
Electrical problems caused by a failing BCM will likely worsen over time. This can lead to a complete loss of essential functions and could eventually result in a no-start condition, leaving you stranded.
How can I be sure this is the correct part for my truck?
Please verify that your vehicle is listed in the compatibility chart. The best way to ensure a perfect match is to cross-reference the part number on your original BCM with the numbers listed in this description.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your original module without any additional fees or hassle.