Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your late 90s or early 2000s GM vehicle? Intermittent power windows, flickering interior lights, or a security system that won’t cooperate are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your truck’s body electronics, and when it starts to fail, it can cause a cascade of confusing and unpredictable issues. This replacement module is the definitive solution to restore your vehicle’s systems to perfect working order.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We professionally program the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures that the BCM communicates flawlessly with your truck’s other electronic systems, eliminating the need for an expensive trip to the dealership for programming. It’s designed for a straightforward installation, getting you back on the road with confidence.
From the Diagnostic Bay
We recently had a ’99 Silverado in the shop with the classic ghost-in-the-machine symptoms. The radio would turn on and off by itself, the dome light would flicker randomly, and the power locks worked only when they wanted to. The owner had already replaced the battery and checked all the grounds he could find. A quick scan with a professional tool showed multiple communication errors pointing directly to the BCM. Instead of a lengthy and costly diagnostic process, we installed one of our pre-programmed modules. In under 30 minutes, every single electrical issue was gone. It’s a common failure on these workhorse trucks, and a pre-programmed module is the fastest, most reliable fix.
Common Symptoms of a Failing GM Truck BCM
- ✔️ Intermittent or non-functional power windows, mirrors, and door locks.
- ✔️ Interior or exterior lights staying on, not turning on, or flickering.
- ✔️ Erratic behavior from the radio or climate control system.
- ✔️ The security or anti-theft system (Passlock/VATS) preventing the vehicle from starting.
- ✔️ Gauges on the instrument cluster behaving erratically or not working at all.
- ✔️ False warning lights appearing on the dashboard.
- ✔️ Windshield wipers operating incorrectly or not at all.
Plug-and-Play Solution, Programmed for Your Truck
The biggest hurdle in replacing a modern vehicle computer is the programming. Our service completely removes that obstacle. Simply provide us with your VIN during checkout, and our technicians will flash this GM Truck BCM with the latest GM software updates specific to your exact vehicle configuration. This ensures all factory-installed options and security features work correctly right out of the box. This module is a direct replacement for multiple part numbers, including 16257125, 19153625, and 191583625.
Installation and Post-Install Procedures
Installation is generally straightforward. The BCM is typically located under the driver’s or passenger’s side of the dashboard. After disconnecting the vehicle’s battery, simply unplug the electrical connectors from the old module, remove it, and install the new one in its place. While this module is designed to be plug-and-play, some vehicles may require simple relearn procedures after installation:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control functionality.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Just provide your vehicle’s VIN when you order, and it will arrive ready for installation.
Where do I provide my VIN?
You can add your VIN in the notes section during checkout or send it to us in a message after you place your order. We cannot ship the module until we receive your VIN.
What if my airbag light is on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically synced with the airbag module (SDM). A repair shop with a high-end diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this part difficult to install myself?
For someone with basic mechanical skills, it is a manageable job. The BCM is usually located under the dash and is held in by a few bolts or clips. The main task is carefully disconnecting and reconnecting the wire harnesses.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
Will this fix my truck not starting?
If your no-start issue is caused by the factory anti-theft system (like Passlock), a faulty BCM is a very common cause. This programmed module will restore the security system’s function and should resolve that specific problem.