Restore Full Functionality to Your GM Truck
Are you tired of chasing down bizarre electrical issues in your truck? Flickering interior lights, power windows with a mind of their own, a security light that won’t turn off, or even an intermittent no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it affects the daily reliability and safety of your truck. Stop throwing parts at the problem and get the definitive solution.
This replacement Body Control Module is the answer. It arrives at your door pre-programmed with the latest GM software, specifically matched to your truck’s Vehicle Identification Number (VIN). This crucial step eliminates the need for an expensive trip to the dealership for programming. We handle the complex part, so you can focus on the straightforward installation. By replacing your failing unit with this reliable, VIN-programmed module, you’re not just fixing a symptom—you’re restoring the electronic brain of your truck’s comfort and convenience systems.
A Technician’s Notebook: The Silverado That Wouldn’t Cooperate
A 2000 Silverado 2500 came into my bay with a classic head-scratcher. The owner complained of random no-starts and the security light staying on. He’d already replaced the battery and ignition switch to no avail. Diagnostics showed communication loss codes with multiple modules. Experience pointed me straight to the BCM. These early GMT800 trucks are workhorses, but after 20+ years of heat cycles and vibrations under the dash, the BCM’s internal solder joints can fracture. We swapped in a VIN-programmed BCM, and the truck fired up instantly, with all systems communicating perfectly. It’s a common failure I’ve seen hundreds of times, and a pre-programmed module is the most efficient fix.
Is Your Truck Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights flickering or staying on.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Inconsistent or incorrect gauge readings on the instrument cluster.
- ✔ Horn honking randomly or not working at all.
- ✔ Common Diagnostic Trouble Codes (DTCs) like U1000, B1000, or other communication-related faults.
Your Straightforward Path to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Access the Module: On most 1999-2000 Silverado/Sierra models, the BCM is located on the driver’s side, behind the lower dash panel to the left of the steering column. You will need to remove the plastic trim panels to gain access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely bolt it in place. Reconnect all electrical connectors, ensuring they click firmly into place.
- ✔ Reconnect and Test: Reinstall the dash panels, reconnect the negative battery terminal, and start the vehicle. Test all functions like windows, locks, lights, and gauges to confirm proper operation.
Important Post-Installation Information
While this module is designed for a simple installation, some vehicles may require additional synchronization steps. Please be aware of the following:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light operation. This can often be done with a capable diagnostic tool.
- No Core Charge: You are not required to return your old BCM. This saves you the time, hassle, and expense of a core return.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part numbers 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801 and fits the following models:
- 1999-2000 Silverado 1500/2500 Pickup (LH dash)
- 1999-2000 Sierra 1500/2500 Pickup (LH dash)
- 1998-2000 S10/S15/Sonoma Pickup (center dash, ID 16257125)
- 1998-2000 Blazer S10/Jimmy S15 (center dash, ID 16257125)
- 2000 Astro / Safari (GMC) (LH dash)
- 1999-2000 Isuzu Hombre (LH dash)
- 1998 Bravada (center dash, w/extended build date opt ZN4)
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential for us to program the BCM with the correct software and vehicle-specific options. This ensures the module communicates perfectly with your truck’s other systems, just like one from the factory, saving you a programming fee at a dealership.
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls many of the non-engine related electronic functions. This includes power windows, door locks, interior and exterior lighting, the security system, and more. When it fails, these systems can behave erratically.
Is this part difficult to install for a DIYer?
For someone with basic mechanical skills and common hand tools, this is a very manageable job. The main task is removing the lower dashboard trim to access the module. Since we program it beforehand, the electrical part is simply plug-and-play.
Do I have to send my old part back?
No. This BCM is sold without a core charge. You can keep your original module, which saves you the cost and inconvenience of return shipping.
What if the airbag light comes on after I install it?
In some cases, the new BCM needs to be electronically introduced to the airbag module (SDM). This is a security feature and requires a ‘Setup SDM Primary Key’ procedure using a professional-grade scan tool. A local repair shop can typically perform this service if needed.