Restore Full Control Over Your Vehicle’s Electronics
Are you battling frustrating electrical issues in your Cadillac Escalade EXT or another GM truck? Flickering lights, unresponsive power windows, or a climate control system with a mind of its own are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can make driving a daily annoyance. This OEM-quality 15116066 BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair that gets you back on the road without a costly trip to the dealership.
Case Study: The Haunted Hummer H2
A customer brought in a 2005 Hummer H2 with a list of bizarre symptoms: the radio would turn on by itself, the door locks would cycle randomly, and the security light was always on, causing intermittent no-start conditions. They had already replaced the battery and checked grounds. After connecting my scanner, I saw a dozen communication codes pointing to the BCM. These modules are notorious for internal solder joint failures over time. We installed a VIN-programmed 15116066 module, and in less than 10 minutes, every single electrical gremlin was gone. It’s a common failure I’ve fixed on hundreds of these GM platforms, and a pre-programmed module is the fastest, most reliable fix.
Is Your Escalade Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely this module is the culprit. This is especially true if you see a 2003-2006 Escalade EXT BCM communication fault code like B1001.
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows, door locks, or interior lights operate erratically or have failed completely.
- ✔ The vehicle’s security system malfunctions, leading to a no-start condition.
- ✔ The airbag warning light is illuminated on the dashboard.
- ✔ The instrument cluster displays inaccurate information or warning messages.
- ✔ Wipers or other accessories activate without input.
Your 5-Minute BCM Installation Guide
One of the best features of our pre-programmed modules is the straightforward installation. You don’t need to be a professional mechanic to get this job done right in your own driveway.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the system to reset.
- Locate the BCM: On most GM trucks and SUVs, including the Escalade EXT, the BCM is located under the driver’s side dashboard, near the steering column.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove the old module and install the new 15116066 BCM in its place.
- Reconnect and Test: Re-attach the electrical connectors to the new module, ensuring they click securely into place. Reconnect the battery terminal.
- Final Checks: Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair. In some cases, a post-install procedure may be needed. For example, if the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function.
Why Choose a VIN-Programmed Module?
This isn’t just a replacement part; it’s a complete repair solution. By programming the module to your VIN before it ships, we ensure it has the latest GM software and is perfectly matched to your vehicle’s specific options. This eliminates the need for expensive dealership programming, saving you time and hundreds of dollars. This is the most efficient way to fix a faulty 2003-2006 Escalade EXT BCM and restore your vehicle to perfect working order. Plus, with no core charge, you can keep your old part without any hassle.
Confirmed Vehicle Fitment List
This 15116066 Body Control Module is a direct replacement for a wide range of General Motors trucks, vans, and SUVs. It is also interchangeable with part numbers 10383536, 15136225, 15198116, and others. Please verify your vehicle is on the list below.
- 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)
- Chevrolet Express Van 1500/2500/3500 (2004-2007)
- GMC Sierra 1500/2500/3500 & Denali (2003-2007 Classic)
- GMC Yukon & Yukon XL 1500/2500 (2003-2006)
- GMC Savana Van 1500/2500/3500 (2004-2007)
- Hummer H2 (2003-2007)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for a plug-and-play installation, saving you the time and expense of a dealership visit.
Is this a difficult part to install myself?
Not at all. For most DIYers, this is a very simple repair that takes less than 15 minutes. It typically involves removing a few dash panels and swapping the module. See our installation guide above for the basic steps.
What happens if my airbag light stays on after installation?
This is a known possibility. If the airbag light is on, the BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Most local repair shops can perform this service.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, which simplifies the process for you.
Will this fix my intermittent no-start problem?
If your no-start issue is caused by the security system (Passlock/VATS) being controlled by a failing BCM, then yes, this module will resolve that problem. It’s a very common symptom of BCM failure on these GM trucks.