Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating and unpredictable electrical issues in your S10, Blazer, Silverado, or Sierra? Problems like flickering lights, malfunctioning power windows, or a security system that won’t let you start your vehicle are often caused by a failing Body Control Module (BCM). The BCM acts as the central hub for your truck’s body electronics, and when it malfunctions, it can create a cascade of confusing symptoms. This replacement BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward, plug-and-play installation.
From the Diagnostic Bay
We had a ’99 GMC Jimmy come into the shop with a list of electrical gremlins that seemed to have no connection. The radio would turn off randomly, the dome light would stay on, and the power locks worked only when they wanted to. The owner had already replaced the battery and checked all the fuses. After connecting our scan tool, we saw communication errors pointing directly to the BCM. It was failing internally, sending corrupt data across the vehicle’s network. We installed a VIN-programmed BCM, and instantly, every single issue was resolved. It’s a perfect example of how one single module can be the root cause of dozens of seemingly unrelated problems.
Is Your BCM Failing? Common Symptoms
A faulty Body Control Module can manifest in numerous ways. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- ✔️ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔️ Interior lights (dome, dash) staying on, flickering, or not turning on.
- ✔️ Anti-theft or security system issues (e.g., Passlock light on, no-start condition).
- ✔️ Horn sounding randomly or failing to work when pressed.
- ✔️ Windshield wipers activating on their own or not responding to the switch.
- ✔️ Inconsistent operation of the instrument cluster gauges or warning lights.
- ✔️ Remote keyless entry (RKE) system no longer works.
The Superior Solution: A VIN-Programmed 1998-2000 S10 BCM
Don’t settle for a generic, unprogrammed module from a salvage yard that will require an expensive trip to the dealership for coding. We take the guesswork and extra cost out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this module with the latest, most stable software from GM. This process ensures that the BCM is a perfect match for your vehicle’s specific options and configuration, just like the original part from the factory.
This module is a direct replacement for multiple part numbers, including 19153625, 16257125, and 191583625. It is designed to restore the precise functionality your vehicle had when it was new.
Installation and Post-Install Procedures
Installation is typically straightforward. On models like the S10, Blazer, and Jimmy, the BCM is located behind the center of the dashboard. On full-size trucks like the Silverado and Sierra, it’s often found on the driver’s side behind the lower dash panel. After swapping the module, you may need to perform one or two simple relearn procedures.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls various electronic accessories, such as power windows, locks, interior/exterior lighting, security systems, and wipers. It’s the command center for non-engine-related electronics.
Do I need to program this BCM?
No. This BCM comes pre-programmed to your vehicle’s VIN. Simply provide your VIN at checkout, and we handle all the programming before shipping. This makes the installation process plug-and-play, with no need for a dealership visit.
Where is the BCM located on my 1999 Chevy S10?
On the 1998-2000 S10, S15, Blazer, and Jimmy models, the BCM is typically located behind the dashboard, near the center console or glove box area. On full-size trucks like the Silverado and Sierra, it’s usually behind the lower dash panel on the driver’s side.
What happens if I install this without programming?
An unprogrammed BCM will not work correctly. It won’t recognize your vehicle’s specific features, which can lead to a no-start condition due to the security system, or cause various other electronic functions to fail. Our pre-programming service eliminates this problem entirely.
My airbag light is on after installation. What should I do?
This is a common occurrence. The new BCM needs to be electronically introduced to the airbag’s computer (SDM). A mechanic with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.
Is there a core charge for my old BCM?
No, there is no core charge for this part. You can keep your original module without needing to send it back.