Restore Your Truck’s Electrical System with a Plug-and-Play BCM
Are you dealing with frustrating and unpredictable electrical problems in your GM truck or SUV? Flickering interior lights, power windows that won’t budge, door locks with a mind of their own, or a persistent ‘Security’ light on the dash are all classic signs of a failing Body Control Module (BCM). Don’t let these electrical gremlins sideline your reliable workhorse. This pre-programmed BCM is the definitive, straightforward solution to get your truck back to 100% functionality.
Common Symptoms & Your Solution
A faulty BCM is the central cause of many bizarre electrical issues. If you’re experiencing any of the following, this module is the component you need to restore proper operation:
- Intermittent or non-working power windows, door locks, and mirrors
- Erratic interior or exterior lighting behavior
- Malfunctioning radio or instrument cluster gauges
- A flashing ‘Security’ light that may prevent the engine from starting (Passlock issues)
- False alarms from the factory security system
This replacement BCM, specifically programmed for your 1999-2000 Sierra 1500 BCM and other compatible models, directly addresses these failures at their source, providing a lasting and reliable fix.
Features & Benefits
- โ Arrives Programmed to Your VIN: We flash the module with the latest GM software using your vehicle’s specific VIN. This eliminates the need for an expensive and time-consuming trip to the dealership for programming.
- โ True Plug-and-Play Installation: Once you receive the module, the process is as simple as removing the old BCM and installing this one. It’s designed for a seamless fit and connection.
- โ No Core Charge: Keep your original module. We don’t require you to send the old part back, saving you time and the hassle of core returns.
- โ Restores Full Functionality: Get your power accessories, lighting, and security systems working exactly as they did from the factory.
- โ Direct Fit for a Wide Range of GM Trucks & SUVs: This unit is a direct replacement for multiple part numbers, ensuring compatibility with Silverado, S10, Blazer, Astro, and more.
- โ This unit is backed by our one-year replacement warranty.
Expert Insight: The Brains of Your Truck’s Body
Think of the BCM as the central nervous system for all your truck’s non-engine-related electronics. On these GMT400 and early GMT800 platform trucks, it’s the hub that interprets inputs from switches (like your window switch or door lock button) and sends commands to the corresponding motors and lights. When it starts to fail, the signals get crossed, leading to the chaotic and random issues you’re seeing. Replacing a faulty 1999-2000 Sierra 1500 BCM isn’t just about fixing one problem; it’s about restoring the entire command center for your vehicle’s comfort and convenience features, ensuring everything works in harmony again.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls various electronic accessories. This includes power windows, power locks, interior and exterior lighting, the security system, and the instrument panel, among other things.
Is this BCM truly plug-and-play?
Yes. Because we program the module to your vehicle’s specific VIN before shipping, it is ready for installation right out of the box. In most cases, no further programming is required, saving you a trip to the dealership. However, please review the potential post-installation procedures like the Airbag System Sync.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive this information, as it is essential for the programming process. You can typically find your VIN on your vehicle’s dashboard (visible through the windshield) or on your registration and insurance documents.
What if my airbag light comes on after installation?
On some models, the new BCM may need to be synced with the airbag system’s computer (SDM). If the airbag warning light is on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Will this fix my flashing ‘Security’ light?
Yes, a faulty BCM is one of the most common causes of issues with the GM Passlock security system, which triggers the ‘Security’ light. Installing a properly programmed 1999-2000 Sierra 1500 BCM is a primary solution for these problems.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep, recycle, or dispose of your original module at your convenience.