Restore Full Functionality to Your GM Truck
Is your Sierra, Silverado, or Tahoe plagued by bizarre electrical problems? One moment the A/C works, the next it’s dead. The power locks have a mind of their own, and a persistent airbag light is staring you down. Before you start chasing wires for hours, the problem is very likely a failing Body Control Module (BCM). This module is the central command for your vehicle’s body electronics, and when it fails, it creates a cascade of frustrating issues. This replacement BCM, part number 15263497, is the definitive solution for a wide range of 2007-2013 GM trucks and SUVs.
What makes our service stand out is the included Cloning Service. You send us your original BCM, and we transfer its exact data—including key fob programming, security settings, and specific vehicle options—to this replacement unit. The result? A truly plug-and-play module that requires no expensive trip to the dealership for programming. It arrives ready for installation, saving you time, money, and headaches.
A Technician’s Notebook: The BCM Grounding Ghost
I had a 2013 Sierra 3500 in the bay last month with the wildest symptoms—flickering dash lights, intermittent radio, and the security light would flash, causing a no-start condition. The owner had already replaced the battery and alternator. After connecting my scanner, I saw a dozen communication loss codes (U-codes). Experience has taught me that on these GMT900 platforms, the BCM is highly sensitive to poor grounds. Sure enough, the main BCM ground point on the A-pillar was corroded. We cleaned the ground, but the original BCM was already damaged from the voltage spikes. Installing one of our cloned BCMs after fixing the ground brought the truck back to life instantly. It’s a perfect example of how a simple mechanical issue can fry a critical electronic component.
Is Your Truck Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your likely solution:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ HVAC and climate control functions are unresponsive or work intermittently.
- ✔ The anti-theft or security system light is on, preventing the engine from starting.
- ✔ An airbag warning light is illuminated, often with a DTC like B1001 (Setup SDM Primary Key in BCM).
- ✔ Headlights, taillights, or interior dome lights flicker or fail to turn on/off.
- ✔ Windshield wipers won’t work or won’t park in the correct position.
- ✔ A host of communication-related Diagnostic Trouble Codes (DTCs) are present.
A Straightforward Guide to Your BCM Replacement
Installing your cloned 2013 Sierra 3500 Body Control Module is a job most DIYers can handle in minutes. The BCM is typically located under the driver’s side dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronics.
- Locate the BCM: On most GM trucks, it’s a black box with several large multi-pin connectors, situated beneath the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have release tabs that need to be pressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- Install the New Module: Seat the replacement module into the bracket and securely plug in all the connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the ignition to the ‘On’ position and test all functions: lights, locks, windows, wipers, and HVAC.
- Post-Installation Checks: In some cases, a couple of quick relearn procedures may be needed. If the airbag light is on, an “Airbag System Sync” with a capable scan tool is required. A “Brake Pedal Position Relearn” might also be necessary for certain models.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of General Motors vehicles and interchanges with numerous part numbers, including 25835966, 15263363, 15878753, 15284816, 15943678, 20939137, and 22860591. Please verify your model and year below.
CHEVROLET SILVERADO 1500/2500/3500 PICKUP: 2007 (New Style)-2013
CHEVROLET SUBURBAN 1500/2500: 2007-2011
CHEVROLET TAHOE: 2007-2011
GMC SIERRA 1500/2500/3500 PICKUP: 2007 (New Style)-2013
GMC SIERRA DENALI 1500/2500/3500: 2007 (New Style)-2013
GMC YUKON & YUKON XL 1500/2500: 2007-2011
CADILLAC ESCALADE, ESV, EXT: 2007-2011
Note: Some 2010 and 2013 models require matching ID 25835966. Our cloning service makes this a non-issue.
Frequently Asked Questions
What exactly is the “Cloning Service”?
Cloning is a process where we transfer the complete software and vehicle-specific data (like VIN, mileage, and key information) from your original BCM to the replacement unit. This makes the new module a perfect digital copy, ensuring it works immediately upon installation without any additional programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. We will return your original module along with the newly programmed replacement.
Will I have to get my keys reprogrammed?
No. Because we clone your original data, the replacement BCM will already recognize your existing keys. This is a major benefit that saves you a trip to a locksmith or dealer.
What if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A professional scan tool is used to perform the ‘Setup SDM Primary Key in BCM’ function, which typically resolves the light in minutes.
Is there a core charge for this part?
No. We do not require you to send your old part back as a core. We only need it temporarily for the cloning process, and it will be returned to you with your order.
How do I know if my BCM is definitely the problem?
The symptoms listed above are strong indicators. For a definitive diagnosis, a professional mechanic would use a high-end scan tool to check for communication errors and specific BCM-related trouble codes. If you see multiple U-codes (loss of communication), the BCM is a primary suspect.