Are you battling persistent and frustrating electrical issues in your Cadillac Escalade EXT? Symptoms like unresponsive power windows, flickering lights, a dead HVAC system, or a security system that prevents your truck from starting often point to a single culprit: a failing Body Control Module (BCM). Restore full functionality and reliability with this direct-fit, VIN-programmed Body Control Module, designed as a replacement for part number 15136877.
The BCM is the electronic brain for your vehicle’s body and cabin accessories. It manages everything from the dome lights and power locks to the windshield wipers and climate controls. When it begins to fail, it can create a cascade of seemingly unrelated problems that are difficult to diagnose. This module is the definitive fix for your 2003-2006 Escalade EXT BCM issues, arriving at your door pre-programmed to your vehicle’s specific VIN. This crucial step ensures a true plug-and-play installation without requiring expensive programming at a dealership.
Expert Pro Tip
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors stop working intermittently or completely.
- ✔ Interior or exterior lights behave erratically, flicker, or fail to turn on/off.
- ✔ HVAC climate control and blower fan are unresponsive.
- ✔ The security system acts up, causing a no-start condition or false alarms.
- ✔ An airbag warning light appears on the dash, often with DTC B1001.
- ✔ Your scanner shows multiple communication or body-related diagnostic trouble codes.
Your Direct-Fit 2003-2006 Escalade EXT BCM Solution
This Body Control Module is engineered to OEM specifications to seamlessly replace your original unit. By providing your VIN at checkout, you receive a module that is perfectly matched to your vehicle’s factory options. This module is a direct replacement for a wide range of part numbers, including 10383536, 15116066, 15136225, 15136877, 15137393, 15198116, and more, making it a versatile solution for many GM trucks and SUVs from this era.
Installation is straightforward for the average DIYer. The BCM is typically located under the steering column. After disconnecting the battery, simply unplug the electrical connectors from the old module, remove it, and install the new one. In some cases, post-installation procedures may be necessary. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system. A brake pedal position sensor relearn might also be required on some models.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and its specific factory options into the module before it ships. This ensures the BCM works perfectly with your Escalade’s other computers right out of the box, eliminating the need for a costly trip to the dealership for programming.
Is this a difficult part to install?
No, the installation is generally simple. It involves locating the module under the driver’s side dash, disconnecting the battery, and swapping the electrical connectors to the new unit. Most people with basic tools can complete the job in under 30 minutes.
Do I need to send my old BCM back?
No. There is no core charge associated with this part. You can keep your original module without any extra fees or hassle.
My airbag light is on after installing the new module. What do I do?
This is a normal security feature. The new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be performed by any qualified auto repair shop with a professional-grade diagnostic tool.
Will this part fit other vehicles besides the Escalade EXT?
Yes, this BCM is compatible with a wide range of 2002-2007 GM trucks and SUVs, including the Silverado, Sierra, Tahoe, Yukon, Suburban, and Hummer H2. Please verify the part number or use our fitment tool to confirm compatibility with your specific vehicle.