Is Your Truck Plagued by Bizarre Electrical Issues?
If you’re dealing with flickering interior lights, power windows with a mind of their own, a security system that won’t cooperate, or gauges that dance randomly, you’re likely facing a failing Body Control Module (BCM). In a workhorse like your 2002 GMC Sierra 3500, these aren’t just annoyances—they’re problems that can take your truck off the road. This isn’t a wiring nightmare; it’s the central command center for your vehicle’s body electronics calling for help.
Common Symptoms & Your Solution
A faulty BCM can manifest in numerous frustrating ways. You might be experiencing intermittent electrical functions, issues with keyless entry, or even a no-start condition due to a security system fault. Our pre-programmed BCM is the definitive, straightforward solution. We take the guesswork and dealership expense out of the equation. By flashing the module to your vehicle’s specific VIN before it ships, we deliver a unit that is ready for a direct, plug-and-play installation, restoring the reliable function you depend on.
Features & Benefits
- ✔ Plug & Play Installation: This BCM arrives pre-programmed to your truck’s VIN. No expensive trip to the dealership for coding is required.
- ✔ Updated GM Software: We flash each module with the latest stable software from GM, ensuring optimal performance and reliability.
- ✔ Restored Functionality: Puts an end to the frustrating electrical gremlins, restoring control over your lights, windows, locks, and security system.
- ✔ Guaranteed Compatibility: A direct replacement for multiple part numbers, including 15063578, 15081796, 15095334, and more.
- ✔ No Core Charge: A simple, direct purchase. You can keep your old, non-working module without any extra fees or hassle.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The BCM as Your Truck’s Nervous System
Think of the BCM as the central nervous system for all the non-engine related electronics in your Sierra. It doesn’t control the fuel injectors, but it tells the dome light to turn on when you open the door, manages the power windows, and interprets signals from your key fob. When it starts to fail, the signals get crossed, leading to the chaotic and seemingly unrelated symptoms you’re seeing. Replacing it with a properly programmed unit is like giving your truck a clean bill of health, ensuring all those essential commands are sent and received correctly again.
Important Post-Installation Procedures
While this module is designed for a simple installation, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary for proper brake light and traction control function.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Guaranteed Fitment For:
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the Body Control Module to your vehicle’s specific VIN before we ship it to you. This makes it a true plug-and-play solution, saving you time and the high cost of dealership programming.
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for the programming process.
What if my airbag light turns on after I install it?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to your vehicle’s airbag system (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this a difficult part to replace myself?
For someone with moderate DIY experience, this is a very manageable job. The BCM is typically located under the steering column or in the center dash. The most important steps are disconnecting the battery first and carefully swapping the electrical connectors. The physical replacement is straightforward.
What part numbers does this module replace?
This BCM is a direct replacement for a wide range of part numbers, including 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. Please match one of these numbers to your original unit to ensure compatibility.