Are you battling persistent electrical gremlins in your GM truck or SUV? Flickering lights, unresponsive power windows, a dead HVAC system, or a stubborn security light are all classic signs of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and difficult-to-diagnose issues. This OEM-quality BCM, part number 15137393, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Diagnosing a Faulty 2003-2007 Silverado BCM
A failing BCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing several of the following symptoms simultaneously, the BCM is the most likely culprit. This module is the direct replacement you need to restore full functionality and peace of mind.
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC system failure, including an inoperative blower motor or inability to change temperature settings.
- ✔ An illuminated airbag warning light, often accompanied by diagnostic trouble code (DTC) B1001.
- ✔ Vehicle security system malfunctions, leading to no-start conditions or a persistent anti-theft light.
- ✔ Intermittent operation of windshield wipers or radio controls.
- ✔ A cluster of seemingly unrelated electrical issues that come and go without a clear pattern.
This module is a direct fit for a wide range of 2002-2007 General Motors vehicles, including the Chevrolet Silverado, Tahoe, Suburban, Avalanche, Express Van; GMC Sierra, Yukon, Savana Van; Cadillac Escalade; and Hummer H2. It is fully interchangeable with part numbers 10383536, 15116066, 15136225, 15136877, 15137394, 15198116, and more, ensuring broad compatibility.
Installation and Post-Install Considerations
Installation is straightforward for the average DIYer. The BCM is typically located under the driver’s side dashboard, near the steering column. Once installed, most functions will work immediately thanks to our VIN programming service. However, in some cases, additional steps may be needed:
- Airbag System Sync: If the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Certain models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
There is no core charge for this part, so you can keep your old module without any hassle or return shipping. Built to strict OEM standards and backed by a one-year warranty, this BCM provides a dependable and lasting repair.
Frequently Asked Questions
What does a Body Control Module do on a Silverado?
The BCM acts as the main computer for your truck’s non-engine related electronics. It controls functions like power windows, door locks, interior and exterior lighting, the security system, HVAC blower, and windshield wipers.
Is this BCM difficult to install?
No, installation is typically very simple and takes less than 15 minutes. It involves removing a few dash panels to access the module (usually under the steering column) and swapping the electrical connectors.
Do I need to program this module after installation?
No. We pre-program the module to your vehicle’s VIN before shipping. This ensures it works out of the box without requiring an expensive trip to the dealership for programming.
What if my airbag light is on after installing the new BCM?
This is a common security measure. You will need a mechanic with a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Will this part fix my check engine light?
Generally, no. The BCM controls body electronics, while the Engine Control Module (ECM) or Powertrain Control Module (PCM) manages engine and transmission functions that trigger the check engine light.