Restore Full Electrical Function to Your GM Truck
Are you battling frustrating electrical gremlins in your truck? Flickering lights, malfunctioning power windows, a stubborn security system, or gauges that have a mind of their own are all 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 cause a cascade of confusing and intermittent issues. This pre-programmed 1999-2000 Silverado Body Control Module is the definitive solution to restore your truck’s reliability and functionality.
Unlike a generic part from a salvage yard or local parts store, this module is not just a replacement; it’s a complete, ready-to-install solution. We flash the unit with the latest official GM software updates and program it specifically to your truck’s Vehicle Identification Number (VIN) before it ships. This critical step ensures seamless communication between the BCM and your vehicle’s other electronic systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN after purchase, and we handle the complex part for you.
From the Diagnostic Bay
We recently had a ’99 Sierra in the shop that was a textbook case of BCM failure. The owner was at his wit’s end—the dome lights would stay on draining the battery, the radio would cut out randomly, and the security light would flash, preventing the truck from starting. After confirming the battery, alternator, and grounds were solid, our diagnostic scan tool pointed to a communication fault with the BCM. We installed a VIN-programmed module just like this one, and it was like flipping a switch. Every single electrical issue vanished instantly. The truck went from being an unreliable headache to a dependable workhorse in less than an hour of shop time.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Vehicle security system acting up, causing no-start conditions or false alarms.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ HVAC (A/C and heater) controls not responding correctly.
- ✔ Horn not working or sounding randomly.
- ✔ Communication error codes when scanned with a diagnostic tool.
Why Choose a VIN-Programmed 1999-2000 Silverado Body Control Module?
This BCM is the smart choice for a lasting repair. By programming it to your VIN, we ensure it has the correct software and configuration for your truck’s specific options and features. This plug-and-play approach saves you significant time, money, and hassle. Plus, with no core charge, you can keep your original module without the inconvenience of packaging and returning the old part.
Installation and Post-Install Procedures
Physically replacing the BCM is straightforward for most DIY mechanics. It is typically located under the driver’s side of the dashboard. However, due to its role in integrating various vehicle systems, a couple of post-installation steps may be necessary:
- Airbag System Sync: If the airbag warning light illuminates after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure proper brake light operation and traction control functionality.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, security system, wipers, and HVAC controls. It acts as the central hub for these electronic features.
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during checkout, and it will arrive ready to install.
What happens if I forget to provide my VIN?
Providing your VIN is essential for the programming service. We will contact you after your purchase to obtain the VIN. Your order cannot be shipped until we receive this information to ensure the module is correctly prepared for your vehicle.
Is this part difficult to install?
The physical installation is generally simple, involving unplugging the old module and plugging in the new one. However, as noted, some vehicles may require a post-installation procedure like an airbag sync or brake pedal relearn, which requires a professional scan tool.
My airbag light is on after installing. What do I do?
This is a known possibility. You will need to have a technician perform the ‘Setup SDM Primary Key in BCM’ procedure with a capable diagnostic tool to sync the airbag system with the new BCM and clear the light.
Why is there no core charge?
We offer this module without a core charge to make your repair process simpler and more affordable. You don’t have to worry about the cost or hassle of returning your old, non-functional part.