Is Your GM Truck Experiencing Bizarre Electrical Problems?
If your 2002 GMC Sierra, Chevy Silverado, or other compatible GM vehicle is suffering from strange electrical gremlins, a failing Body Control Module (BCM) is the most common culprit. The BCM is the central nervous system for your vehicle’s electronics, controlling everything from your power windows and locks to the interior lights and security system. When it starts to fail, it can cause a cascade of frustrating and seemingly unrelated issues.
Common Symptoms of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not working.
- ✔ The security or anti-theft light staying illuminated, causing a no-start condition.
- ✔ Gauges on the instrument cluster behaving erratically or not working.
- ✔ The radio or climate control system turning on and off by itself.
- ✔ False warning messages appearing on the driver information center.
- ✔ Communication loss with other vehicle modules (DTC U-codes).
The Direct-Fit Solution: A Pre-Programmed 2002 Sierra BCM
Don’t let a faulty module keep your truck off the road. This is a direct-fit replacement Body Control Module for a wide range of 2002-2005 GM trucks and SUVs. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures it has the latest GM software updates and is ready for installation upon arrival. Simply provide us with your VIN during checkout, and we’ll handle the rest.
This is a simple, effective solution to restore full functionality to your vehicle’s body electronics.
This module is a compatible replacement for the following part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU.
Installation & Required Procedures
While the module is programmed for your VIN, some vehicles may require additional post-installation steps to ensure all systems communicate correctly. These are known as ‘relearn’ or ‘setup’ procedures and may require a professional-grade scan tool.
- Airbag System Sync: If the airbag warning light is on after installation, the ‘Setup SDM Primary Key in BCM’ procedure must be performed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration may be needed on some models to ensure proper brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions, such as power windows, locks, lights, security system, wipers, and climate controls. It’s the command center for passenger comfort and convenience features.
Do I need to program this BCM?
No. We handle the programming for you. This module will arrive flashed with the latest GM software and coded specifically to your vehicle’s VIN. Just provide your VIN at checkout.
How do I find my original part number?
Your original BCM’s part number is printed on a sticker on the module’s case. On most 2002 GM trucks, it’s located under the steering column. On vans like the Astro/Safari, it’s in the center dash area.
What if my airbag light comes on after I install this?
This is a known possibility. It means the new BCM needs to be electronically introduced to the vehicle’s airbag system (SDM). A mechanic with a bi-directional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this a plug-and-play part?
It is plug-in and pre-programmed, which simplifies the process significantly. However, as noted, some vehicles may require additional relearn procedures for systems like the airbags or brakes, which require a professional scan tool.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.