Are you experiencing frustrating and unpredictable electrical problems in your GM truck or SUV? Issues like flickering dashboard lights, malfunctioning power windows and locks, or a security light that won’t turn off are common signs of a failing Body Control Module (BCM). The BCM is the central computer responsible for managing your vehicle’s non-engine-related functions, and when it fails, it can cause a wide range of confusing symptoms. This replacement Body Control Module is the definitive solution to restore your vehicle’s proper electronic functions and get you back on the road with confidence.
This is a direct-fit replacement for a variety of 2002-2005 GM vehicles, including the GMC Sierra, Chevrolet Silverado, Tahoe, Suburban, and more. To ensure a simple and straightforward installation, we program the module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This means no expensive trips to the dealership for programming are required. Simply provide your VIN at checkout, and we’ll handle the rest, loading the latest GM software updates for optimal performance.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ The security or anti-theft light stays illuminated, preventing the engine from starting.
- ✔ Dashboard lights flicker, or gauges behave unpredictably.
- ✔ Interior dome lights or exterior lights (like headlights or taillights) don’t work correctly.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ HVAC and climate control systems are unresponsive.
- ✔ The radio or infotainment system malfunctions.
Guaranteed Fitment for Your 2002 Sierra Denali BCM
This module is a reliable replacement for multiple OEM part numbers, including 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is designed to work seamlessly with a wide range of GM trucks and SUVs from the era. By providing your VIN, you guarantee that the module you receive is perfectly matched to your vehicle’s factory options.
Installation and Post-Install Notes
Installation is typically straightforward, as the BCM is usually located under the steering column or in the center dash area. After installing your new BCM, some vehicles may require additional procedures for full functionality:
- Airbag System Sync: If the airbag warning light is on after installation, 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.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure brake lights and traction control work as intended.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a qualified technician for specific instructions related to your vehicle.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the main computer for your vehicle’s body electronics. It controls features like power windows, locks, lights, the security system, wipers, and the HVAC system, ensuring they all work together correctly.
Is this BCM difficult to install?
For someone with basic mechanical skills, the physical installation is generally not difficult. It involves disconnecting the battery, removing a few dash panels, and swapping the module. Since we pre-program it, you avoid the complex computer programming steps.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive the VIN, as this step is essential for matching the module to your vehicle.
What happens if my airbag light is on after installation?
This can happen because the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old BCM back?
No. This purchase does not require a core return. You can keep your original module.