Restore Full Control Over Your Cadillac’s Electronics
Are you battling frustrating electrical issues in your 2003-2006 Cadillac Escalade EXT? When features like your power windows, door locks, interior lights, or even the HVAC system start acting erratically or fail completely, the Body Control Module (BCM) is often the culprit. This isn’t just an inconvenience; it can compromise your vehicle’s security and safety. This replacement BCM, equivalent to part number 15136225, is the definitive solution to restore the seamless functionality you expect from your luxury truck.
As the central command center for your vehicle’s body electronics, a failing BCM can trigger a cascade of problems that are often misdiagnosed. Our solution bypasses the dealership hassle. We offer a professional Cloning Service, where we transfer the precise data from your original module to this replacement unit. This ensures all your vehicle’s specific settings, security information, and key data are preserved, making for a true plug-and-play installation with no additional programming required.
A Technician’s Notebook: The Misleading Airbag Light
A 2005 Escalade EXT came into my bay with the airbag light on and the radio cutting out intermittently. The owner had already spent a small fortune at another shop that couldn’t pinpoint the issue. They suspected the airbag module (SDM). However, a quick scan showed a BCM communication fault, specifically DTC B1001 (Option Configuration Error). The BCM was failing to communicate properly with the SDM. After confirming power and grounds were good at the BCM connector, we knew the module itself was faulty. By providing a cloned 2003-2006 Escalade EXT BCM, we not only fixed the radio issue but also cleared the airbag light permanently after a quick sync procedure. It’s a classic case where the root cause isn’t always the most obvious one.
Is Your Escalade Showing These Electrical Gremlins?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security system malfunctioning, causing no-start conditions or false alarms.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Communication errors with other modules on the vehicle’s network.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and reset the system.
- ✔ Locate the BCM: On the Escalade EXT, the BCM is typically found under the driver’s side dashboard, near the steering column.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Seat the cloned BCM into the mounting bracket and securely reconnect all electrical harnesses. You should hear a click as they lock in place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Post-Install Checks: Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC. Note that some post-installation procedures may be required.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, certain systems may require a recalibration. If your airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. In some cases, a ‘Brake Pedal Position Relearn’ may also be necessary. Always consult a factory service manual for vehicle-specific instructions.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for a wide range of GM trucks and SUVs. It is interchangeable with part numbers 15136225, 15116066, 10383536, 15198116, and others. While this listing is for the 2003-2006 Escalade EXT BCM, it also fits:
AVALANCHE 1500 & 2500 03-06 Body Control (BCM); (under steering column)
SILVERADO & SIERRA 1500/2500/3500 (Crew Cab) 03-07 (Classic) Body Control (BCM); (under steering column)
SUBURBAN & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE & YUKON 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
EXPRESS & SAVANA VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
Frequently Asked Questions
How does the Cloning Service work?
You send us your original Body Control Module. We then use specialized equipment to read the critical vehicle data—including VIN, mileage, and key information—and flash it directly onto your new replacement module. This makes the new part an exact electronic match to your old one.
Do I need to send my original BCM to you?
Yes, for the cloning service to be successful, we require your original module to extract the necessary data. We return your original module along with the newly programmed replacement.
Will I need to have a dealer program this part?
No. The entire point of our cloning service is to eliminate the need for dealer programming. Once installed, the module will function immediately as if it were the original from the factory.
What happens if my airbag light is on after installation?
This is a known possibility. It means the BCM and the SDM (Sensing and Diagnostic Module) need to be re-synchronized. This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by a professional mechanic with a capable bi-directional scan tool.
Is there a core charge for this part?
No, there is no core charge. Your original module is required for the service and will be returned to you with the replacement, so you can keep it.
What tools are needed for the installation?
Basic hand tools, such as a socket set and a small pry tool for trim panels, are typically all that’s required for the physical installation. A professional scan tool may be needed for post-install procedures, as mentioned above.