Restore Full Electrical Function to Your 1998 GM Truck or SUV
Are you battling frustrating electrical gremlins in your 1998 Chevy S10, GMC Sonoma, or Blazer? Flickering lights, malfunctioning power windows and locks, a security system that acts on its own, or even a no-start condition can often be traced back to a single culprit: a failing Body Control Module (BCM). This central command unit is the brain behind your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and unpredictable problems. This replacement BCM is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
The Plug-and-Play Solution for Your 1998 S10 BCM
Forget the hassle and expense of a dealership visit. We simplify the repair process by providing a BCM that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This critical step ensures that the module communicates flawlessly with your truck’s other electronic systems right out of the box. Simply provide your VIN during checkout, and we’ll handle the complex programming, loading the latest GM software updates to ensure optimal performance and reliability. This is the most efficient way to get your truck back on the road without the need for expensive dealer-specific tools for initial setup.
From the Diagnostic Bay
We had a 1998 Blazer come in that was driving the owner crazy. The dome lights would stay on, the radio presets would randomly reset, and occasionally the truck just wouldn’t start, with the security light flashing. The battery and alternator checked out fine. After connecting our scanner, we saw multiple communication loss codes with the BCM. Instead of spending hours chasing wires, we identified the BCM as the internal fault. A replacement, VIN-programmed module like this one had the truck’s electronics behaving perfectly in under an hour. It’s a common failure point on these vehicles, but thankfully, it’s a straightforward fix with the right part.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (e.g., dome lights staying on, headlights not working).
- ✔ Malfunctioning radio or climate control displays.
- ✔ The security or anti-theft system preventing the engine from starting.
- ✔ Inconsistent or non-working windshield wipers.
- ✔ False warning lights appearing on the dashboard.
- ✔ Complete loss of power to multiple accessory systems at once.
Installation and Post-Install Notes
This BCM is typically located in the center of the dashboard. While installation is a direct replacement, please be aware of potential post-installation procedures. Depending on your vehicle’s specific configuration, some systems may need to be re-synced with the new BCM.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This must be performed by a qualified technician with a professional-grade diagnostic tool to ensure the safety system is properly synchronized.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Guaranteed Fitment for Multiple Part Numbers
This module is a direct replacement for a range of original part numbers, ensuring compatibility. It will fit vehicles that originally came with part numbers: 09366803, 16264870, 16268395, 8093668030, and 8162683950. This part is confirmed to fit the following vehicles:
- 1998 Blazer S10 / Jimmy S15 (Body Control, center dash)
- 1998 Bravada (Body Control, center dash, w/o extended build date)
- 1998 Isuzu Hombre (Body Control, LH dash)
- 1998 S10 / S15 / Sonoma (Body Control, center dash)
Frequently Asked Questions
Do I need to send you my old BCM?
No, there is no core charge for this part. You can keep your original module.
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software and security information onto the BCM. This is essential for the module to communicate correctly with the engine computer, instrument cluster, and other systems. We do this for you so it’s ready for installation.
Will this fix my no-start problem?
If your no-start issue is caused by the factory anti-theft system (Passlock) being triggered by a faulty BCM, then yes, this programmed module is the correct solution. A flashing security light is a key indicator of this problem.
Where is the BCM located on my 1998 S10?
The Body Control Module on most 1998 S-series trucks and SUVs, including the S10, Blazer, and Jimmy, is located behind the dashboard, typically in the center area, often near the glove box or radio.
What tools are needed for the Airbag System Sync?
The airbag sync procedure requires a high-level, bi-directional diagnostic scan tool, such as a GM Tech 2 or a comparable professional scanner. Basic code readers cannot perform this function.