Solve Your Truck’s Electrical Headaches for Good
If you’re dealing with a 2011 GMC Sierra that seems to have a mind of its own—flickering lights, a dead instrument cluster, power windows that won’t budge, or an air conditioner that only works when it wants to—you’re likely facing a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. This VIN-programmed Body Control Module, a direct replacement for part number 15263497, is the definitive solution to restore full functionality and reliability to your vehicle.
Forget about expensive dealership visits and the hassle of programming. We handle the critical software setup for you. Simply provide your vehicle’s VIN at checkout, and we’ll program the module with the latest GM software specific to your truck. This ensures that once installed, it communicates perfectly with your vehicle’s other systems, making for a true plug-and-play repair.
A Technician’s Notebook: The Grounding Gremlin
I once had a 2011 Sierra in my bay with the classic signs of a bad BCM: intermittent no-start, radio cutting out, and random warning lights. The owner had already replaced the battery and alternator. After plugging in my scanner, I saw a dozen communication codes. While a new BCM was needed, the root cause was a corroded ground strap near the module’s mounting point. Moisture had created resistance, slowly frying the original unit. This is why I always tell my customers: when you replace a 2011 Sierra Body Control Module, take an extra two minutes to clean the main BCM ground connection. It’s the best insurance against a repeat failure.
Is Your Sierra Showing These Electrical Faults?
A failing BCM doesn’t always trigger a check engine light. Instead, it manifests as bizarre electrical behavior. Here are the most common signs I’ve seen in my 20+ years of diagnostics:
- ✔ Power windows, door locks, or mirrors stop working or operate erratically.
- ✔ The HVAC system is unresponsive, or the blower motor works intermittently.
- ✔ An airbag light is illuminated on the dash, often with a DTC B1001 stored.
- ✔ The vehicle’s security system acts up, preventing the truck from starting.
- ✔ Headlights, taillights, or interior lights flicker or fail to turn on.
- ✔ The radio or infotainment system randomly shuts off.
Your 5-Minute BCM Replacement Guide
Replacing the 2011 Sierra Body Control Module is a job most DIYers can handle in their driveway with basic tools. The module is typically located under the driver’s side dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent electrical shorts.
- Locate the Module: Remove the lower dash panel beneath the steering wheel to access the BCM. It’s a black box with several large electrical connectors.
- Swap the Part: Carefully unplug all wiring harnesses. The connectors have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old module and install the new one in its place.
- Reconnect and Test: Securely plug all connectors into your new, pre-programmed BCM. Reconnect the battery terminal.
- Final Checks: Start the vehicle and test all functions: lights, wipers, windows, locks, and HVAC. In most cases, the repair is complete. For persistent airbag lights, see the post-installation notes in our FAQ.
Verified Compatibility for Your GM Truck or SUV
This module is a guaranteed fit for a wide range of General Motors vehicles. Please verify your model and year below. This part is interchangeable with numbers: 25835966, 15263363, 15878753, 15284816, 15943678, and more.
CADILLAC ESCALADE, ESV, EXT 07-11
CHEVROLET SILVERADO 1500, 2500, 3500 PICKUP 07-13
CHEVROLET SUBURBAN 1500, 2500 07-11
CHEVROLET TAHOE 07-11
GMC SIERRA 1500, 2500, 3500 PICKUP 07-13
GMC SIERRA DENALI 1500, 2500, 3500 07-13
GMC YUKON & YUKON XL 1500, 2500 07-11
Note: For 2007 models, this fits the ‘new style’ with a smooth door skin. Some 2010 and 2013 models may require matching ID 25835966.
Frequently Asked Questions
Frequently Asked Questions
Is this 2011 Sierra Body Control Module really plug-and-play?
Yes. By programming the module to your vehicle’s VIN before shipping, we eliminate the need for any additional programming or trips to a dealership. It arrives ready for installation.
What if my airbag light is still on after I install it?
This is a known GM procedure. If the airbag light persists (DTC B1001), 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 and is a quick procedure for any qualified shop.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module without any extra fees or hassle.
What tools are required for installation?
You’ll typically only need a basic socket set or nut driver to remove the lower dash panel and the module’s mounting bolts, along with a flathead screwdriver to help release connector tabs if they are stiff.