Restore Your Truck’s Electrical Systems with a Reliable BCM
Are you chasing electrical gremlins in your 1998 Chevy Blazer, S10, or GMC Jimmy? Intermittent wipers, flickering lights, or power accessories that have a mind of their own are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a host of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement 1998 Blazer BCM is the definitive solution, arriving pre-programmed with the latest GM software specifically for your vehicle’s VIN.
A Technician’s Notebook
I remember a ’98 Jimmy S15 that came into the shop with a classic “haunted truck” complaint. The dome lights would stay on, the radio would cut out, and sometimes the security light would flash, preventing it from starting. The owner had already replaced the battery and checked fuses. After hooking up the scanner, I saw communication loss codes with the BCM. Instead of a complex wiring issue, the root cause was internal failure of the original module—a common issue I’ve seen hundreds of times on these platforms due to aging capacitors. Swapping in a VIN-programmed BCM like this one resolved all issues in under 30 minutes. The customer was thrilled to have their reliable truck back without a massive repair bill.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit:
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security system light is on, causing a no-start condition.
- ✔ Wipers behaving erratically (e.g., won’t turn off).
- ✔ The radio or instrument cluster display is malfunctioning.
- ✔ False warnings appearing on the dash, like the ‘door ajar’ light.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a DIYer. This module is designed for a direct fit, and since we program it beforehand, you can skip the expensive trip to the dealership. Follow these general steps for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most 1998 Blazer, Jimmy, and S10 models, the BCM is located in the center of the dashboard, often behind the glove box or a lower dash panel. On the Isuzu Hombre, it’s typically on the driver’s side (LH dash).
- Access and Remove: Remove any trim panels necessary to access the module. Carefully unplug the electrical connectors—they have locking tabs that need to be depressed. Unbolt the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all electrical connectors until they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, locks, windows, wipers, etc.
Important Post-Installation Notes
In some cases, additional steps with a professional scan tool may be required. This is normal and ensures all vehicle systems communicate correctly with the new 1998 Blazer BCM.
- Airbag System Sync: If your airbag warning light illuminates after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed to sync the airbag system.
- Brake Pedal Position Relearn: For proper brake light and traction control operation, a brake pedal position sensor recalibration may be necessary.
Verified Vehicle Compatibility
This Body Control Module is a guaranteed fit for the following vehicles and part numbers. Simply provide your VIN at checkout, and we’ll handle the programming.
Direct replacement for part numbers: 09366803, 16264870, 16268395, 8093668030, 8162683950
Fits these 1998 Models:
- BLAZER S10 / JIMMY S15 (Body Control located in center dash)
- BRAVADA (Body Control located in center dash, w/o extended build date)
- ISUZU HOMBRE (Body Control located in LH dash)
- S10 / S15 / SONOMA (Body Control located in center dash)
Best of all, there is no core charge. You can keep your old part.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We pre-program this module to your vehicle’s specific VIN before shipping it to you. It arrives ready for installation, saving you time and money.
Where is the BCM located on my 1998 Blazer or S10?
The Body Control Module is typically found in the center of the dashboard, accessible by removing the glove box or a lower dash panel.
What if my airbag light comes on after I install the new BCM?
This may happen occasionally. It requires a simple ‘Setup SDM Primary Key in BCM’ procedure with a compatible professional scan tool to sync the airbag module with the new BCM and turn off the light.
Is this a direct fit for my old part number 16268395?
Yes, this module is a direct, interchangeable replacement for part numbers 09366803, 16264870, and 16268395, among others listed in the fitment section.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your original module.