Are you battling frustrating electrical issues in your Cadillac Escalade, Chevy Silverado, or GMC Sierra? When power windows fail, the HVAC system acts possessed, or your dash lights up with random warnings, the culprit is often a failing Body Control Module (BCM). This central command unit is the brain behind your vehicle’s body electronics. Restore order and full functionality with our OEM-quality GM BCM, part number 15198116, expertly pre-programmed to your vehicle’s VIN for a true plug-and-play solution.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop that was a real head-scratcher. The owner reported the radio would turn off randomly, the driver’s side power window worked intermittently, and the airbag light was on with a B1001 code. We checked grounds and wiring harnesses for hours with no luck. On a hunch, we swapped in a known-good, programmed BCM. Instantly, every single issue was resolved. A faulty BCM can create a cascade of seemingly unrelated problems, making it one of the most misdiagnosed components on these GM trucks.
Common Symptoms of a Failing GM BCM
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC system failures, such as a blower motor that won’t turn on or stays stuck on high.
- ✔ An illuminated airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system malfunctions, leading to no-start conditions or false alarms.
- ✔ Strange electrical behavior, like the radio turning off or gauges acting erratically.
- ✔ Communication errors with other vehicle modules, triggering a variety of DTCs.
Solving Issues with Your Escalade EXT Body Control Module
Don’t let a faulty module keep your truck or SUV down. This replacement BCM is built to strict OEM standards for reliability and longevity. The most significant benefit is our complimentary VIN programming service. We flash the module with the latest GM software updates and your vehicle’s specific information before it ships. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money. Installation is straightforward for any DIYer with basic tools, typically located under the steering column for easy access.
Post-Installation Notes: While this module is designed for plug-and-play installation, some vehicles may require a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on. This syncs the new BCM with the airbag system and requires a professional-grade scan tool. Additionally, a Brake Pedal Position relearn may be needed on certain models. Always disconnect the battery before swapping modules.
This module is a direct replacement for a wide range of part numbers, including: 10383536, 15116066, 15136225, 15136877, 15198116, 15257043, and many more.
Frequently Asked Questions
What does this Escalade EXT Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls functions like your power windows, door locks, interior and exterior lights, wipers, HVAC system, and security features.
Do I need to have this module programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. This makes it a plug-and-play installation, saving you the time and expense of a dealership visit.
Is this part difficult to install?
Installation is generally simple and can be done in under 15 minutes. The BCM is typically located under the driver’s side dashboard near the steering column. Basic hand tools are all that’s required.
What if my airbag light is on after I install the new BCM?
If the airbag light is on, it means the new BCM needs to be electronically synced with your vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a mechanic with a professional diagnostic tool.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module without needing to send it back.