Are you battling frustrating electrical problems in your GM truck or SUV? Intermittent power windows, flickering lights, malfunctioning door locks, or a security system that acts on its own are classic 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 create a cascade of confusing and hard-to-diagnose issues. Stop chasing electrical gremlins and replace the faulty component with a reliable, pre-programmed solution.
This is a direct-replacement BCM for a wide range of 2002-2005 GM vehicles. To ensure a seamless installation, we program the module to your vehicle’s specific VIN before it ships. This critical step integrates the BCM with your truck’s existing systems and options, saving you a trip to the dealership and the high cost of programming fees. Simply provide your VIN after purchase, and we’ll handle the rest.
Common Symptoms of a Failing BCM
- ✔ Inoperative or erratic power windows and door locks.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ The security system or horn activating randomly.
- ✔ The instrument cluster displaying incorrect information or warning lights.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
- ✔ A/C and blower motor control problems.
Why Choose Our Pre-Programmed 2002 Sierra 1500 BCM?
Getting your truck back to perfect working order is our priority. This module is tested for full functionality and programmed with the latest GM software updates for your specific vehicle. This not only restores original operation but also ensures optimal performance and reliability. By matching the BCM to your VIN, we help you avoid the common compatibility issues that arise from using a generic, non-programmed module from a salvage yard.
Installation and Post-Install Notes
Installation is straightforward for those with mechanical experience. The BCM is typically located under the steering column or in the center dash area. While our programming handles the majority of the setup, some vehicles may require additional steps after installation:
- Airbag System Sync: If your airbag warning light is illuminated after installing the new BCM, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light operation and to satisfy the traction control system.
Please consult a factory service manual or a qualified technician for vehicle-specific instructions. There is no core charge for this part, so you can keep your original module.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
How does the VIN programming process work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. We use this number to load the correct software and vehicle-specific options into the BCM, making it ready for installation in your truck.
Is this part truly plug-and-play?
For most vehicles, yes. Our VIN programming makes it a direct replacement. However, as noted, some models may require an additional procedure like an airbag system sync or brake pedal position relearn, which needs to be performed with a diagnostic tool.
Where do I find my original part number?
Your BCM’s part number is printed on a sticker on the module itself. You will need to locate and likely remove the BCM to read it. This listing is compatible with part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU.
What if the airbag light comes 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 module (SDM). A repair shop with a professional 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. There is no core charge associated with this purchase. You can keep your original part.