Is Your GM Truck Experiencing Strange Electrical Problems?
If your GMC Sierra, Chevy Silverado, or Tahoe is suffering from a frustrating array of electrical issues, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and door locks to the HVAC system and security features. When it begins to fail, it can cause unpredictable and widespread problems that are often difficult to diagnose.
This genuine OEM-quality Body Control Module, interchangeable with part number 15878753, is the definitive solution. We pre-program it to your vehicle’s specific VIN, ensuring it works perfectly right out of the box. This eliminates the need for expensive dealership programming, making the repair process faster, simpler, and more affordable.
From the Diagnostic Bay
We had a 2011 Sierra 2500 in the shop last month with a laundry list of complaints: the radio would cut out, the driver’s side window wouldn’t roll down, and the A/C blower was intermittent. The owner had already replaced the window switch and the blower motor resistor with no success. After a quick scan, we saw multiple communication codes all pointing back to one source. A new, programmed BCM fixed every single issue in under 10 minutes. It’s a classic case of what happens when the vehicle’s electronic brain starts to fail.
Symptoms of a Failing Body Control Module
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) flicker or fail to turn on/off.
- ✔ The vehicle’s security system malfunctions, causing false alarms or preventing the engine from starting.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Wipers behaving erratically or not responding to the switch.
Solving Problems with a Programmed GMC Sierra BCM
Replacing a faulty module is critical for restoring your truck’s safety and convenience features. Our professionally programmed GMC Sierra BCM is the most reliable and efficient way to get your vehicle back to 100%. We flash the module with the latest GM software updates using your VIN, ensuring seamless integration with your truck’s existing systems. This plug-and-play solution is designed for a perfect fit and function in a wide range of GM trucks and SUVs from 2007 to 2013.
Installation is straightforward for any DIY mechanic. The BCM is typically located under the driver’s side dashboard near the steering column. Once installed, most functions will be immediately restored. However, in some cases, post-installation procedures may be necessary. If the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. A brake pedal position relearn may also be needed for certain models.
Frequently Asked Questions
What does a ‘VIN Programmed’ BCM mean?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and corresponding software onto the module before shipping. This makes it a true plug-and-play part, saving you a trip to the dealership for expensive programming.
Will this BCM fix my airbag light with code B1001?
A faulty BCM is a common cause of the B1001 code. Replacing it often resolves the issue. However, if the light persists after installation, the ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-end scan tool to sync the airbag system.
Where is the BCM located on my 2011 GMC Sierra?
The Body Control Module is located under the driver’s side dashboard, typically to the left of the steering column. It’s an accessible part that can be replaced in minutes with basic tools.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module without any hassle or extra fees.
Is this compatible with other part numbers?
Yes, this module is a direct replacement and is interchangeable with numerous part numbers, including 25844480, 25835966, 15263363, 15943678, 20939137, and 22860591, among others.