If you’re dealing with perplexing electrical issues in your 1998 Oldsmobile Bravada or a similar GM truck, you know how frustrating it can be. Flickering lights, malfunctioning power windows, a security system that acts up, or intermittent starting problems often point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM goes, it can create a cascade of baffling symptoms. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability.
This is a direct-fit replacement Body Control Module, specifically for your vehicle. We take the hassle out of the repair by programming the module to your vehicle’s specific VIN before it ever leaves our facility. This means it arrives ready for installation, loaded with the latest software updates from GM. You get a reliable fix that restores factory functionality without the expensive trip to a dealership for programming. Simply provide your VIN at checkout, and we’ll handle the rest.
Case Study: A Tricky Diagnosis
I remember a 1998 Chevy S10 that came into the shop a while back. The owner was at his wit’s end. The dome light would stay on, the radio presets would randomly reset, and sometimes the fuel pump wouldn’t prime, leaving him stranded. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed communication errors with multiple accessory systems, all pointing back to a central point. We traced the wiring and found no faults, which led us directly to the BCM. A faulty BCM, like the original 1998 Bravada BCM, can corrupt data signals, causing these ghost-like problems. Once we swapped in a correctly programmed module, every single issue vanished. The truck ran perfectly, and the owner was thrilled to have his reliable ride back.
Is Your SUV Exhibiting These Electrical Gremlins?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome light, dash lights).
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Inconsistent instrument cluster gauge operation.
- ✔ Radio or climate control malfunctions.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs) stored in the system.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a DIYer with basic tools. In most of these GM trucks, the BCM is located in the center dash area, often near the glove box or radio.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: Access the module, which is typically a black plastic box with several large electrical connectors. On the 1998 Bravada, it’s in the center dash. On the Isuzu Hombre, it’s on the left-hand side.
- Remove the Old Module: Carefully unplug all electrical connectors. Take a photo beforehand if it helps you remember their positions. Unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all the electrical connectors.
- Reconnect Power: Reattach the negative battery terminal.
- Post-Installation Checks: Turn the key to the ‘On’ position and test all functions: lights, windows, locks, radio, etc. Note: Some vehicles may require additional steps below.
Important Post-Installation Procedures
While this module is programmed for your VIN, your vehicle’s other computers may need to re-sync with the new BCM. Be aware of these potential requirements:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- 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.
Verified Vehicle Compatibility
This module is a direct replacement for several part numbers and fits a range of popular 1998 GM trucks. Please verify your part number or vehicle model from the list below to ensure a perfect match.
This module replaces the following part numbers: 09366803, 16264870, 16268395, 8093668030, 8162683950
It is guaranteed to fit the following vehicles:
- ✔ 1998 Chevrolet Blazer S10 (Body Control, center dash, with matching ID)
- ✔ 1998 GMC Jimmy S15 (Body Control, center dash, with matching ID)
- ✔ 1998 Oldsmobile Bravada (Body Control, center dash, w/o extended build date)
- ✔ 1998 Chevrolet S10 / GMC Sonoma (Body Control, center dash, with matching ID)
- ✔ 1998 Isuzu Hombre (Body Control, LH dash)
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors many of its non-engine-related electronic functions. This includes power windows, locks, lights, the alarm system, wipers, and the instrument panel.
Is this BCM really ready to install out of the box?
Yes! We program the module to the Vehicle Identification Number (VIN) you provide during checkout. This ensures it communicates correctly with your vehicle’s systems, saving you a trip to the dealer for expensive programming.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
What if my airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a professional-grade scan tool to resolve this.
Where is the BCM located on my 1998 Bravada?
On the 1998 Oldsmobile Bravada, as well as the Chevy Blazer and GMC Jimmy, the BCM is located behind the dashboard on the passenger side, typically accessible by removing the glove box or a lower dash panel.