Restore Full Functionality to Your Truck’s Electronics
Are you battling frustrating electrical gremlins in your Isuzu Hombre, Chevy S10, GMC Sierra, or another compatible GM truck? Flickering lights, unresponsive power windows, erratic door locks, and a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). This central command unit is the brain behind your vehicle’s body accessories, and when it starts to fail, it can make driving a daily annoyance. Don’t let a faulty BCM compromise your truck’s reliability and convenience. This direct-fit, VIN-programmed Body Control Module is the definitive solution to restore your vehicle’s electronics to factory-perfect condition.
From the Diagnostic Bay
We had a 1999 Silverado in the shop with a classic ‘mystery’ battery drain. The owner had replaced the battery and alternator twice, but every few days, it would be dead. After checking all the usual suspects, we hooked up an ammeter and started pulling fuses. When we pulled the BCM fuse, the parasitic draw dropped to almost zero. A shorted circuit inside the original BCM was keeping multiple relays energized even with the key off, slowly killing the battery. Swapping in a VIN-programmed BCM like this one not only fixed the battery drain but also resolved a quirky issue the owner had with his dome light not turning off correctly. It’s a reminder that the BCM controls more than you think!
Is Your Truck Showing These Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ A security system that falsely triggers the alarm or prevents the engine from starting (PassLock issues).
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ Unexplained battery drain that leaves you with a dead battery.
- ✔ Diagnostic trouble codes related to the BCM or communication errors on the data bus.
The Plug-and-Play Solution for Your 1999-2000 Isuzu Hombre BCM
Forget expensive dealership visits and the hassle of finding a shop that can program a new module. We take all the guesswork out of the repair. When you order from us, you provide your vehicle’s VIN, and we handle the rest. Our technicians will flash this module with the latest GM software specific to your truck’s configuration. This ensures that when the part arrives, it’s ready for a straightforward installation. This isn’t just a replacement part; it’s a complete, hassle-free service designed to get you back on the road quickly and confidently.
This module is a direct replacement for a wide range of popular GM trucks and SUVs, including the Chevy S10/S15/Sonoma, Blazer/Jimmy, Silverado/Sierra, Astro/Safari, and Oldsmobile Bravada. It is compatible with multiple part numbers, including 16257125, 19153625, 09366801, and others listed in the fitment guide. By matching your vehicle’s VIN, we ensure perfect compatibility and function.
Installation and Post-Install Considerations
Installation is typically straightforward, involving locating the old BCM (often under the driver’s or center dash), disconnecting the battery, swapping the electrical connectors, and mounting the new unit. However, on these specific GM platforms, a couple of post-installation procedures may be necessary:
- Airbag System Sync: In some cases, the new BCM may cause the airbag warning light to illuminate. This is because the BCM and the Sensing and Diagnostic Module (SDM) need to be electronically re-synced. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
- Brake Pedal Position Relearn: To ensure proper brake light operation and stability control function, a brake pedal position sensor relearn might be required. This can also be performed with a capable diagnostic tool.
We believe in transparency, and while these procedures aren’t always needed, it’s important to be aware of them. Best of all, there is no core charge for this part. You can keep your original module without the hassle of shipping it back.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls and monitors many of your vehicle’s non-engine-related electronic systems. This includes power windows, door locks, interior and exterior lighting, the security system, wipers, and often communicates with other modules in the vehicle.
How do I know for sure that my BCM is the problem?
While the symptoms listed are strong indicators, a definitive diagnosis often requires a professional scan tool to check for BCM-specific trouble codes (U-codes, B-codes) and to test inputs and outputs. Ruling out issues with wiring, fuses, and individual components (like a window motor) is also a key part of the diagnostic process.
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it to you. This makes the installation process as close to plug-and-play as possible, saving you a trip to the dealership.
Where is the BCM located on my truck?
On most compatible models like the S10, Blazer, Silverado, and Sierra from this era, the BCM is located inside the cab, typically mounted to a bracket behind the center or driver’s side of the dashboard. Consulting a service manual for your specific model is the best way to confirm its exact location.
What happens if my airbag light comes on after installation?
This indicates the BCM and the airbag module (SDM) need to be synced. A repair shop with a professional-grade scan tool (like a Tech 2 or equivalent) can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this fix my GM PassLock security issues?
A failing BCM is a very common cause of PassLock security system problems, which can prevent your truck from starting. Replacing the BCM with a unit programmed to your VIN is a primary step in resolving these persistent security faults.