Restore Full Functionality to Your GM Vehicle
Are you chasing down bizarre electrical issues in your Cadillac, Chevrolet, or GMC truck or SUV? One moment the power windows work, the next they don’t. The A/C blower motor has a mind of its own, and a persistent airbag light is on your dash. These aren’t separate problems; they’re classic signs of a failing Body Control Module (BCM). As the central computer for your vehicle’s comfort and security features, a faulty BCM can cause widespread chaos. This replacement BCM, part number 15116066, is the definitive solution to restore order.
Through our simple and effective Cloning Service, we transfer the essential data from your original module to this replacement unit. The result is a true plug-and-play component that requires no expensive trip to the dealership for programming. Get your vehicle’s electronics working reliably again.
Is Your GM Truck Showing These Symptoms?
- ✔ Intermittent or completely non-functional power windows, door locks, or interior lights.
- ✔ HVAC controls that don’t respond or a blower motor that works sporadically.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system malfunctions, including random alarm activation or a no-start condition where the engine won’t crank.
- ✔ Unpredictable windshield wiper operation.
- ✔ A cluster of seemingly unrelated communication codes across various modules.
Case Study: A Tricky Diagnosis
I remember a 2005 Silverado 2500 that came into my shop with a laundry list of complaints. The owner was frustrated because he’d replaced the blower motor resistor twice, but the A/C was still unreliable. His driver’s side window wouldn’t go down, and the security light would flash occasionally, preventing the truck from starting. He thought he had multiple, expensive problems. After scanning the vehicle, I saw communication errors with the BCM. Instead of chasing each symptom, we focused on the source. We replaced his BCM with one of our cloned units. In under an hour, every single one of his electrical gremlins was gone. It’s a powerful reminder of how this single component can solve a dozen headaches at once.
Your Plug-and-Play Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work.
- ✔ Locate the BCM: On most compatible models like the Escalade, Silverado, and Tahoe, the BCM is located under the driver’s side dashboard, near the steering column. It’s a black plastic box with several large electrical connectors.
- ✔ Remove the Old Module: Carefully depress the locking tabs on each wiring harness connector and pull them straight out. The module itself is typically held in place by simple clips or a few small bolts. Remove it from its bracket.
- ✔ Install the New Module: Seat your new, cloned BCM into the mounting bracket and securely reconnect all wiring harnesses. You’ll hear a click as they lock into place.
- ✔ Final Steps: Reconnect the negative battery terminal. Start the vehicle and test all functions—lights, locks, windows, HVAC, and wipers—to confirm the repair.
Important Post-Installation Information
While our cloning service makes this a straightforward swap, some GM vehicles may require a quick relearn procedure for full functionality. These do not require a trip to the dealer but may need a capable bi-directional scan tool.
- Airbag System Sync: If the airbag light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be needed to ensure correct brake light operation.
Will This Fit My Truck or SUV?
This module is a direct replacement for part number 15116066 and is interchangeable with several other part numbers, including 10383536, 15136225, 15198116, and 15257043. It is verified to fit the following General Motors vehicles:
- Cadillac Escalade, ESV, EXT (2003-2006)
- Chevrolet Avalanche 1500, 2500 (2003-2006)
- Chevrolet Silverado 1500, 2500, 3500 (2003-2007 Classic)
- Chevrolet Suburban 1500, 2500 (2003-2006)
- Chevrolet Tahoe (2003-2006)
- GMC Sierra 1500, 2500, 3500, Denali (2003-2007 Classic)
- GMC Yukon, Yukon XL 1500, 2500 (2003-2006)
- Hummer H2 (2003-2007)
- Chevrolet Express & GMC Savana Vans (2004-2007) with commercial tradesman package (opt PRP)
Frequently Asked Questions
How does the Cloning Service work?
After you place your order, you will ship your original Body Control Module to us. We will then professionally transfer your vehicle’s specific configuration and security data to the replacement module. This ensures it works perfectly with your existing keys and systems without any additional programming.
Do I get my old module back?
Yes. We always return your original module along with the fully programmed replacement unit. We do not require a core, so you can keep your original part.
Will this 2003-2006 Escalade ESV Body Control Module fix my airbag light?
If the airbag light is caused by a communication failure with the BCM (like code B1001), this module will resolve the root cause. However, as noted in the post-installation steps, a simple sync procedure with a professional scan tool may be required to turn the light off after installation.
What tools do I need for installation?
For most vehicles, installation only requires basic hand tools, such as a socket set or screwdriver, to access the module under the dash. No special electronic tools are needed for the physical swap.