Restore Full Electrical Control to Your GM Truck
Are you chasing down bizarre electrical issues in your GMC Sierra, Chevy Silverado, or Tahoe? One moment the A/C works, the next it doesn’t. Your power locks have a mind of their own, and a persistent airbag light is on your dash. Before you spend a fortune on diagnostics, consider the heart of your vehicle’s body electronics: the Body Control Module (BCM). This VIN-programmed BCM, interchangeable with part number 15263497, is the definitive solution for a wide range of frustrating electrical problems in 2007-2013 GM trucks and SUVs.
As the central command for features like lighting, security, power accessories, and climate control, a failing BCM can cause system-wide chaos. Our modules are professionally programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without a trip to the dealership. This isn’t just a replacement part; it’s a restoration of your vehicle’s reliability and functionality.
Is Your GM Truck Experiencing These Electrical Gremlins?
- ✔ Intermittent or completely dead HVAC and blower fan controls.
- ✔ The dreaded airbag warning light is on, often with a DTC B1001 code stored.
- ✔ Power windows, door locks, or exterior lights work sporadically or not at all.
- ✔ Your security system acts up, causing no-start conditions, stalling, or misfires.
- ✔ A cluster of seemingly unrelated diagnostic trouble codes related to body systems.
- ✔ Poor ground symptoms that persist even after cleaning ground points.
A Technician’s Notebook: The Case of the Haunted Sierra
I once had a 2011 GMC Sierra in my bay that had its owner at his wit’s end. The truck would randomly refuse to start, the radio would shut off, and the driver’s side window wouldn’t roll down. He had already replaced the battery and alternator. After scanning the systems, I found a dozen communication codes across multiple modules. The common link? They all routed through the BCM. A quick check of the BCM’s power and ground connections confirmed they were solid. The internal failure of the original 2011 Sierra Body Control Module was causing a data storm on the CAN bus network, creating phantom issues. A new, VIN-programmed BCM fixed every single problem in under 10 minutes. It’s a classic example of how one part can solve a multitude of symptoms.
A Straightforward Guide to BCM Installation
Getting your truck back to normal is easier than you think. This module is located under the driver’s side dashboard, near the steering column, making it accessible for a quick swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most GM trucks and SUVs, it’s mounted to a bracket just above the driver’s footwell area. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the old module and remove it.
- Install the New Module: Seat the new BCM into the mounting bracket and securely plug in all electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, windows, locks, wipers, and HVAC to confirm the repair.
Important Post-Installation Note: In some cases, particularly if you had an active airbag code like B1001, the airbag light may remain on. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” function to re-sync the systems. Additionally, a Brake Pedal Position relearn might be needed on certain models.
Guaranteed Fitment for Your GM Truck or SUV
This module is a direct replacement for a wide range of General Motors vehicles. It is compatible with part numbers 25844480, 25835966, 15263497, 15878753, 20939137, 22860591, and more. Please verify your vehicle from the list below:
GMC: Sierra 1500/2500/3500 (07-13), Sierra Denali (07-13), Yukon & Yukon XL (07-11)
Cadillac: Escalade, ESV, EXT (07-11)
Note: For 2007 models, this fits the ‘new style’ with a smooth door skin. Some 2010-2013 models may require matching ID 25835966.
Frequently Asked Questions
What exactly does this Body Control Module do?
The BCM acts as the central computer for your vehicle’s body-related accessories. It controls the power windows, locks, interior/exterior lights, wipers, security system, and climate control functions, ensuring they all work as intended.
Is this module really plug-and-play?
Yes! We program the module to your vehicle’s VIN before shipping. This ensures it communicates correctly with your truck’s other systems right out of the box, eliminating the need for expensive dealership programming.
Why is my airbag light still on after installing the new BCM?
This is a common security measure. If the original BCM failed with an airbag fault (like DTC B1001), the new module needs to be electronically ‘introduced’ to the airbag system (SDM). This requires a bi-directional scan tool to perform the ‘Setup SDM Primary Key’ procedure.
Do I need to send my old part back?
No. There is absolutely no core charge for this part. You can keep your old module or dispose of it without any hassle.
Will this 2011 Sierra Body Control Module fit other GM models?
Absolutely. While it’s a perfect fit for the 2011 Sierra, it’s also designed for a wide range of Chevy, GMC, and Cadillac trucks and SUVs from 2007-2013. Check our detailed fitment list to confirm compatibility with your specific vehicle.