Are you chasing electrical gremlins in your 1998 Oldsmobile Bravada or GM S-10 platform truck? Intermittent power windows, flickering lights, a possessed security system, or a vehicle that refuses to start can almost always be traced back to a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these modules cause some of the most frustrating and hard-to-diagnose issues. This isn’t just a component; it’s the central nervous system for your vehicle’s body electronics, and when it fails, it can make your reliable truck feel unpredictable.
We offer a straightforward, reliable solution. This is a direct-fit Body Control Module for your vehicle, and the best part is, we handle the programming for you. Simply provide your vehicle’s VIN at checkout, and we will flash the module with the latest GM software updates specific to your truck before it even leaves our facility. This means you can skip the expensive trip to the dealership and the hassle of finding a shop with the right equipment. This is the closest you can get to a plug-and-play fix for a complex electronic part.
A Technician’s Notebook: The Case of the Haunted S-10
I remember a 1998 Chevy S-10 that came into my bay with a list of bizarre symptoms. The owner said the dome light would stay on, the power locks would cycle randomly while driving, and sometimes the fuel pump wouldn’t prime, leaving him stranded. He had already replaced the battery and checked all the fuses. A quick scan showed a slew of communication errors pointing towards the BCM. These GM S-10 platform vehicles (including the Bravada, Jimmy, and Sonoma) are notorious for BCM failures due to age and heat cycles affecting the internal circuit board. Swapping in a pre-programmed module like this one resolved all the issues in under an hour. It’s a classic fix for a classic problem.
Symptoms of a Failing Body Control Module
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security or anti-theft light flashing, preventing the engine from starting.
- ✔ Inconsistent operation of the radio or instrument cluster gauges.
- ✔ False warning lights appearing on the dashboard.
- ✔ Problems with the windshield wipers or HVAC controls.
Your Straightforward Installation Guide
Installing your replacement 1998 Bravada BCM is a manageable job for a confident DIYer. While the exact location can vary slightly, here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most 1998 Blazer, Jimmy, Sonoma, and Bravada models, the BCM is located behind the dashboard, typically on the passenger side near the glove box or in the center dash area. On the Isuzu Hombre, it’s often on the driver’s side (LH dash).
- Access the Module: You may need to remove the glove box or a lower dash panel to gain clear access to the BCM.
- Swap the Connections: Carefully disconnect the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Plug them securely into your new, pre-programmed module.
- Mount the New BCM: Secure the new module in the original mounting location.
- Final Steps: Reassemble the dash panels and reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions (windows, locks, lights, etc.).
Post-Installation Note: In some cases, additional steps may be required. If your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. A Brake Pedal Position Relearn may also be necessary. Always refer to a factory service manual for detailed instructions specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 09366803, 16264870, 16268395, 8093668030, and 8162683950 and is guaranteed to fit the following models:
- ✔ 1998 Chevrolet Blazer S10 (with ID 16268395, 9366803, or 16264870)
- ✔ 1998 GMC Jimmy S15 (with ID 16268395, 9366803, or 16264870)
- ✔ 1998 Oldsmobile Bravada (w/o extended build date)
- ✔ 1998 Chevrolet S10 / GMC Sonoma (with ID 16268395)
- ✔ 1998 Isuzu Hombre
Frequently Asked Questions
Do I need to program this BCM?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you a trip to the dealer.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that manages many of your vehicle’s non-engine-related electronic functions, such as power windows, locks, lights, the security system, and wipers.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module.
What if my airbag light comes on after installation?
This can happen occasionally. It means the new BCM needs to be synchronized with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be performed by a professional with a capable diagnostic tool.
Will this fix my ‘Service Engine Soon’ light?
Generally, no. The BCM controls body functions, while the ‘Service Engine Soon’ light is related to the engine and emissions systems, which are managed by the Engine Control Module (ECM) or Powertrain Control Module (PCM).