Is Your GM Truck or SUV Plagued by Electrical Gremlins?
If your 2007-2013 GM vehicle is experiencing bizarre electrical issues, a failing Body Control Module (BCM) is often the culprit. The BCM is the central command center for your truck’s body electronics, and when it starts to fail, it can cause a cascade of frustrating problems. This genuine quality GM Body Control Module, interchangeable with part number 15284816, is the definitive solution to restore your vehicle’s functionality and peace of mind. We pre-program the module to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without any need for a costly trip to the dealership.
From the Diagnostic Bay
We recently had a 2013 GMC Sierra 3500 in the shop with a classic case of BCM failure. The owner had already replaced the blower motor resistor and the headlight switch, but the problems persisted—the HVAC would work intermittently, and the passenger side low beam was out despite a good bulb. A quick scan revealed multiple communication codes pointing to the BCM. A common mistake is to chase individual symptoms, but often the root cause is the central module. Before replacing any switches or motors, always check for poor ground connections at the BCM, as this can mimic module failure. Installing a VIN-programmed BCM and verifying grounds fixed every single issue in under 15 minutes.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) failing to work correctly.
- ✔ HVAC system malfunctions, such as an inoperative blower fan or inability to control temperature.
- ✔ The security system acting up, causing no-start conditions or random alarm triggers.
- ✔ An illuminated airbag warning light, often with a DTC B1001 code.
- ✔ Intermittent stalling, misfires, or other strange engine behavior tied to electrical grounding issues.
- ✔ Multiple seemingly unrelated diagnostic trouble codes (DTCs) stored in the system.
The Right Solution: A Programmed 2013 Sierra 3500 BCM
Don’t settle for a generic module that requires expensive dealer programming. Our service provides a BCM that is ready to install right out of the box. We flash the unit with the latest GM software updates and program it to your vehicle’s VIN, ensuring all factory options and systems communicate perfectly. This not only saves you time and money but also guarantees optimal performance and reliability. This module is a direct replacement for a wide range of GM trucks and SUVs from 2007 to 2013, including the Chevrolet Silverado, Suburban, Tahoe, Avalanche, GMC Sierra, Yukon, and Cadillac Escalade.
Interchangeable Part Numbers: 25844480, 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591.
Installation and Post-Install Procedures
Installation is straightforward for most DIY mechanics. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, remove it, and install the new one in its place. While the module is plug-and-play for most functions, be aware of these potential post-installation steps:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and traction control operation.
Frequently Asked Questions
What does a Body Control Module (BCM) 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, the security system, and the HVAC fan.
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for a plug-and-play installation, saving you the time and expense of a dealership visit.
What if my airbag light is on after I install the new module?
This is a normal security procedure. You will need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function to sync the new BCM with your vehicle’s airbag module and clear the light.
Is this part difficult to install?
The physical installation is simple, typically taking less than 15 minutes. It’s located under the steering column and just requires unplugging the old unit and plugging in the new one. However, some post-install electronic procedures may be necessary.
Will this fit vehicles other than a 2013 Sierra 3500?
Yes, this BCM fits a wide range of 2007-2013 GM trucks and SUVs, including the Chevy Silverado, Tahoe, Suburban, GMC Yukon, and Cadillac Escalade. Please verify your part number to ensure compatibility.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle.