Restore Full Control Over Your Vehicle’s Electronics
Are you dealing with baffling electrical issues in your Cadillac Escalade EXT? One moment the power windows work, the next they don’t. Maybe your HVAC controls have a mind of their own, or a persistent airbag light refuses to go away. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM), the electronic nerve center of your vehicle’s comfort and convenience features. This OEM-quality BCM, part number 15116066, is the definitive solution, and our included cloning service makes the repair simpler than you ever thought possible.
Case Study: The Haunted 2005 Sierra
A customer brought in a 2005 GMC Sierra with a laundry list of bizarre symptoms: the radio would turn on by itself, the door locks would cycle while driving, and the security light would flash intermittently, sometimes causing a no-start. He had already replaced the battery and checked all the fuses. After connecting my scanner, I saw a handful of communication codes, including a B1001. In my 20+ years of experience, this points directly to an internal BCM failure. We installed a cloned BCM, and within 10 minutes, every single ghost in his machine was gone. This isn’t just a part; it’s the solution that brings sanity back to your vehicle’s electronics.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the component you need to replace your faulty original.
- ā Intermittent or non-functional power windows, door locks, or mirrors.
- ā HVAC blower motor or climate controls not working correctly.
- ā An airbag warning light on the dash, often with a DTC like B1001.
- ā Erratic interior or exterior lights (flickering, staying on, or not turning on).
- ā Vehicle security system acting up, leading to a no-start condition.
- ā Communication errors with other modules on the vehicle’s network.
The Power of Our Cloning Service
Forget expensive dealership visits and the hassle of programming a new module. Our professional cloning service makes this a true plug-and-play repair. The process is simple: you send us your original BCM, and we expertly transfer its unique vehicle dataāincluding VIN, mileage, and key informationādirectly to your new module. We then ship both modules back to you. This ensures seamless integration with your truck’s existing systems, preserving all original functions without requiring any complicated relearn procedures or special scan tools for the basic installation. It’s the most reliable way to get your 2003-2006 Escalade EXT BCM working perfectly from the moment you plug it in.
A Straightforward Guide to Installation
- ā Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ā Locate the BCM: On most compatible models like the Escalade EXT, the BCM is located under the driver’s side of the dashboard, near the steering column.
- ā Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, the module can be unclipped or unbolted from its bracket.
- ā Install the New BCM: Connect the electrical harnesses to your newly cloned module and secure it back into the mounting bracket.
- ā Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC to confirm the repair was successful.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15116066 and is interchangeable with several other part numbers, including 15136225, 15198116, and 10383536. It fits a wide range of GM trucks, vans, and SUVs. Please verify your part number before ordering.
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
CHEVROLET EXPRESS VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
CHEVROLET SILVERADO 1500/2500/3500 PICKUP 03-07 (Classic) Body Control (BCM); Crew Cab models
CHEVROLET SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
CHEVROLET TAHOE 03-06 Body Control (BCM); (under steering column)
GMC SAVANA VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
GMC SIERRA 1500/2500/3500 PICKUP 03-07 (Classic) Body Control (BCM); Crew Cab models
GMC SIERRA DENALI 03-07 (Classic) Body Control (BCM); (under steering column)
GMC YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
Frequently Asked Questions
What exactly is a cloning service?
Cloning is a process where we transfer the complete software and vehicle-specific data (like the VIN and security information) from your original BCM to the replacement unit. This makes the new module an exact digital copy of the old one, eliminating the need for dealership 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 your newly programmed replacement.
Will this fix my airbag light?
If the airbag light is caused by a BCM fault (like DTC B1001), this part will resolve the root cause. However, in some cases, a post-installation procedure called ‘Setup SDM Primary Key in BCM’ may be required using a professional scan tool to sync the airbag system and clear the light.
Is there a core charge?
No, there is no core charge. Since you are sending your original module for the cloning service, the process is straightforward with no additional fees.
What if I still have issues after installation?
While our cloned 2003-2006 Escalade EXT BCM is designed for immediate function, some vehicles may require a Brake Pedal Position relearn. Always consult a factory service manual or a qualified technician if you encounter any unexpected behavior post-installation. We stand by our products with a one-year warranty.