Restore Full Electronic Functionality to Your GM Truck or SUV
Is your Silverado, Sierra, S10, or Blazer suffering from strange and unpredictable electrical problems? Flickering lights, unresponsive power windows, a security system that won’t cooperate, or a dead battery overnight are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it malfunctions, it can create a host of frustrating issues. This replacement Body Control Module, part number 16257125, is the definitive solution to restore your truck’s reliability and functionality.
We had a 1999 Silverado 1500 in the shop that was driving the owner crazy. The dome lights would randomly turn on and stay on, completely draining the battery if it sat for more than a day. He had replaced the battery twice and checked all the door jamb switches. After hooking up our scanner, we saw erratic data coming from the BCM’s courtesy light circuit. The internal relays were failing. We installed a VIN-programmed BCM, and the problem was solved instantly. It’s a classic failure mode for these modules, and a direct replacement is the only reliable fix.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-working power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that won’t turn on or off.
- ✔ The security or anti-theft light flashing, preventing the engine from starting.
- ✔ Instrument cluster gauges behaving erratically or not working at all.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Intermittent no-start conditions where the starter doesn’t engage.
- ✔ Unexplained parasitic battery drain leading to a dead battery.
The Plug-and-Play Solution: A Pre-Programmed GM Truck BCM
Don’t waste time and money at the dealership with a blank module that requires expensive programming. We take the hassle out of the repair. When you purchase this GM Truck BCM, we flash it with the latest official GM software updates using the Vehicle Identification Number (VIN) you provide. This ensures that the module is a perfect match for your vehicle’s specific options and configuration. The result is a simplified installation process that gets you back on the road faster.
Simple Ordering and Installation Process
1. Place Your Order: Add this module to your cart and complete the checkout process.
2. Provide Your VIN: Reply to your order confirmation email with your vehicle’s 17-digit VIN.
3. We Program & Ship: Our technicians will program the module specifically for your truck and ship it directly to you.
4. Install the Module: Installation is typically straightforward, often located under the driver’s or passenger’s side of the dashboard. Once installed, some vehicles may require a simple relearn procedure as outlined below.
Post-Installation Requirements
While this module is programmed for your vehicle, certain security and safety systems may need to be synchronized after installation. These are standard procedures for this type of repair.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light and traction control operation.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment
This module is a direct replacement for part number 16257125 and is also compatible with the following part numbers: 19153625, 8191536250, 191583625, 8093668010, 8162571250, 09366801. It fits a wide range of GM vehicles, including:
- 1998-2000 S10/S15/SONOMA
- 1998-2000 BLAZER S10/JIMMY S15
- 1999-2000 SILVERADO & SIERRA 1500/2500
- 2000 ASTRO & SAFARI
- 1998 BRAVADA
- 1999-2000 ISUZU HOMBRE
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages many of your vehicle’s non-engine related electronic functions. This includes power windows, door locks, interior and exterior lighting, the security system, wipers, and various warning chimes.
Why do you need my VIN?
Your vehicle’s VIN allows us to program the BCM with the exact software and settings for the specific options your truck was built with, such as keyless entry, power seats, or automatic headlights. This ensures full functionality and a true plug-and-play installation.
Is this part difficult to install?
For someone with moderate DIY mechanical skill, the physical installation is typically not difficult. The BCM is usually located under the dashboard and is held in by a few bolts or clips with electrical connectors. The most critical part is ensuring any post-install sync procedures are performed if needed.
What happens if my airbag light is on after I install the BCM?
This is a normal possibility. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop or technician with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to sync the systems and turn off the light.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many modules, a ‘Service 4WD’ light is typically caused by a faulty Transfer Case Control Module (TCCM), a bad encoder motor, or a faulty switch. You should diagnose the 4WD system separately before replacing the BCM for that specific issue.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.