Restore Full Electrical Function to Your GM Truck or Van
Are you dealing with bizarre and frustrating electrical issues in your vehicle? Power windows that won’t budge, interior lights with a mind of their own, or a security system that prevents your truck from starting? These are classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it malfunctions, it can cause a cascade of problems. This replacement BCM, part number 15063578, is the reliable solution to get your truck’s features working like new again.
Common Symptoms of a Failing BCM:
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ The security light is illuminated on the dash, possibly causing a no-start condition.
- ✔ The horn sounding randomly or not working when pressed.
- ✔ Inconsistent operation of the heating and A/C blower motor or controls.
- ✔ False warnings on the driver information center, such as “Service Vehicle Soon.”
From the Diagnostic Bay
We had a 2002 Sierra come in with a battery that would be dead every morning. The owner had replaced the battery twice. After a quick parasitic draw test, we traced the issue to the BCM, which was keeping the interior courtesy lights faintly illuminated even when the truck was off. Swapping in a VIN-programmed BCM like this one solved the problem instantly. It’s often these small, overlooked components that cause the biggest headaches.
The Plug-and-Play Solution for Your 2002 Silverado 3500 BCM
Don’t waste time and money at the dealership. We make the replacement process simple. When you order, you provide us with your vehicle’s VIN. Our technicians will then program this BCM with the latest GM software specific to your truck. This means when the part arrives, it’s ready for installation without the need for an expensive programming tool. Plus, there is no core charge, so you can keep your original module.
Post-Installation Information
In most cases, this is a direct-fit, plug-and-play installation. However, depending on your vehicle’s specific configuration, a couple of simple relearn procedures may be needed:
- Airbag System Sync: If the airbag warning light is on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure with a capable scan tool.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration may be necessary.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Compatible Part Numbers:
This module is a direct replacement for part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU.
Frequently Asked Questions
What does the BCM do on my 2002 Silverado?
The Body Control Module (BCM) manages a wide range of non-engine related functions, including the power windows, locks, interior/exterior lighting, security system, horn, and HVAC controls. It’s the brain for your truck’s comfort and convenience features.
Is this BCM difficult to install?
On most compatible models like the Silverado and Sierra, the BCM is located under the steering column. It is typically held in by a few bolts or clips and has several electrical connectors. Since we program it to your VIN, the physical installation is straightforward for a DIYer with basic tools.
Do I need to send my old BCM back?
No. This part has no core charge. You can keep your original module without any extra fees.
How do I provide my VIN for programming?
After you complete your purchase, we will send you an email with instructions on how to reply with your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information.
What if my airbag light is on after I install the new BCM?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A repair shop with a professional diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fit vehicles other than a 2002 Silverado 3500?
Yes, this BCM fits a wide range of 2002-2005 GM trucks and vans, including the Sierra, Tahoe, Yukon, Suburban, Astro, Safari, and more. Please refer to the detailed fitment list on this page to confirm compatibility with your specific vehicle.