Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical issues in your Cadillac Escalade, Chevrolet Silverado, or GMC Sierra? Flickering lights, a non-responsive HVAC system, or random warning lights on the dash are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a wide range of perplexing problems. This genuine OEM-quality BCM, interchangeable with part number 15116066 and others, is the definitive solution to restore your vehicle’s performance and reliability.
Diagnosing a Faulty 2003-2006 Escalade ESV BCM
A failing BCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, a faulty Body Control Module is the likely culprit. This module is the solution for a wide range of GM trucks and SUVs from 2002-2007, not just the Escalade.
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ HVAC and climate control functions are erratic, or the blower motor won’t turn on.
- ✔ The security system acts up, causing a no-start condition or false alarms.
- ✔ Interior dome lights or exterior lights (headlights, taillights) stay on or won’t turn on.
- ✔ The airbag warning light is illuminated, often with a B1001 diagnostic trouble code (DTC).
- ✔ Windshield wipers behaving unpredictably.
- ✔ Multiple, seemingly unrelated DTCs stored in the vehicle’s computer.
The Plug-and-Play Advantage: Pre-Programmed for Your VIN
Forget expensive trips to the dealership for programming. We take care of the hard part for you. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software specific to your vehicle. This ensures that the BCM communicates flawlessly with your vehicle’s other systems right out of the box. This VIN-specific programming is critical for proper function of the powertrain, security systems, and optional equipment, making for a true plug-and-play installation.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC system.
Is this part ready to install when I receive it?
Yes! This BCM is fully programmed to your vehicle’s specific VIN before shipping. This means no additional programming or dealer visits are required for most installations, making it a true plug-and-play part.
Where is the BCM located on my vehicle?
On most compatible GM trucks and SUVs like the Escalade, Silverado, and Tahoe, the BCM is located under the driver’s side dashboard, near the steering column. On Savana and Express vans, it is typically found in the center dash area.
What if my airbag light is on after installation?
If the airbag light appears after installing the new BCM, it means the BCM and the Sensing and Diagnostic Module (SDM) need to be synchronized. This requires a ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any hassle or extra fees.
Will this fit my Chevrolet Silverado or GMC Sierra?
Absolutely. While this page focuses on the Escalade, this BCM is compatible with a vast range of 2002-2007 GM vehicles, including the Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, Hummer H2, and Express/Savana vans. Please check the detailed fitment list to confirm for your specific model and year.