Is Your GM Truck Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, unresponsive power windows, a malfunctioning security system, or strange warning lights on your dash, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your truck’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated issues. This genuine GM Body Control Module, part number 25844480 (interchangeable with 25835966), is the definitive solution for restoring full electrical functionality to your 2007-2013 GM truck or SUV.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) staying on or not turning on at all.
- ✔ HVAC and climate control functions failing, including an inoperative blower motor.
- ✔ The vehicle’s security system acting up, preventing the engine from starting.
- ✔ An illuminated airbag warning light, often with a DTC B1001 code.
- ✔ Intermittent stalling, misfires, or other performance issues tied to electrical grounding.
- ✔ A variety of diagnostic trouble codes (DTCs) related to body systems and communication networks.
The Plug-and-Play Solution: A Programmed 2013 Sierra 2500 BCM
Don’t waste time and money at the dealership. We take the hassle out of the repair by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that all factory settings, security information, and vehicle options are correctly loaded before it even ships. The result is a true plug-and-play installation that requires no additional trips to a mechanic for expensive programming. Simply locate the old module under the driver’s side dash, swap it with this one, and restore your truck’s electrical systems to factory-perfect operation.
Post-Installation Procedures
While installation is straightforward, some vehicles may require simple relearn procedures. If your airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system. Additionally, a Brake Pedal Position Relearn might be necessary to ensure proper brake light and traction control operation. These procedures are simple for any qualified technician with the right equipment.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and climate controls, ensuring they all work together seamlessly.
Is this part difficult to install myself?
For most DIYers, the physical installation is very simple. The BCM is typically located under the driver’s side dashboard and can be swapped out in minutes with basic tools. The key benefit of our module is that it arrives pre-programmed, eliminating the most difficult step.
Will I need to take my truck to the dealer after installing this?
No. Because we program the module to your VIN before shipping, you can skip the dealership visit. In some cases, as noted above, an airbag system sync may be required if the warning light is on, which can be done by any reputable repair shop with a high-level scan tool.
What does ‘No Core Charge’ mean?
It means you don’t have to send your old, faulty BCM back to us. You can keep it, dispose of it, or recycle it without any extra fees or hassle.
How do I know if this BCM will fit my vehicle?
This module fits a wide range of 2007-2013 GM trucks and SUVs, including the Sierra, Silverado, Tahoe, Yukon, and Escalade. It is a direct replacement for part numbers 25835966, 25844480, and many others listed in the description. Always verify the part number on your original module to ensure compatibility.