Restore Full Electronic Control to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your late 90s GM vehicle? Issues like power windows with a mind of their own, interior lights that won’t turn off, or a security system that prevents your truck from starting are often traced back to a single, critical component: the Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and intermittent problems. This replacement Body Control Module, programmed specifically to your vehicle’s VIN, is the definitive solution to restore your vehicle’s functionality and get you back on the road with confidence.
Unlike a generic part from a salvage yard, this BCM arrives at your door ready for installation. We handle the complex programming process for you. Simply provide your vehicle’s VIN during checkout, and our technicians will flash the module with the latest GM software updates and your vehicle’s specific configuration. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money. It’s a true plug-and-play fix for a wide range of GM trucks and SUVs, including the S10, Blazer, Sierra, and Silverado.
From the Diagnostic Bay
We once had a 1999 GMC Jimmy come into the shop with a passenger window that refused to work. The owner had already replaced the window motor and the switch, but the problem persisted. He was convinced it was a wiring issue buried deep in the door. After a quick scan, we saw no communication from the BCM’s window driver circuit. We swapped in a programmed BCM, and the window immediately started working perfectly. It’s a classic case where the BCM was the root cause, not the more obvious components. This highlights how a faulty 1998-2000 S10 BCM can mimic other failures, leading to wasted time and money on incorrect parts.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft light flashing, often causing a no-start condition.
- ✔ Intermittent or non-operational windshield wipers and washers.
- ✔ The horn sounding randomly or not working when pressed.
- ✔ Inaccurate fuel gauge or other instrument cluster issues.
- ✔ Problems with the keyless entry system or remote fobs.
Installation and Post-Install Procedures
Installation is straightforward for anyone with basic mechanical skills. The BCM is typically located under the dash. Once the new module is installed, your vehicle’s primary functions will be restored. However, in some cases, additional synchronization procedures may be needed. There is no core charge for this part, so you can keep your original module.
- 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: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light operation.
Please note: Specific procedures can vary. We always recommend consulting a factory service manual or a qualified technician for guidance.
Guaranteed Fitment for Part Number 16257125 and more
This module is a direct replacement for a range of part numbers, ensuring compatibility. It fits numerous vehicles including the S10/S15/SONOMA, BLAZER/JIMMY, SIERRA, SILVERADO, ASTRO, SAFARI, and ISUZU HOMBRE from 1998-2000. Please verify your original part number matches one of the following: 19153625, 8191536250, 16257125, 191583625, 8093668010, 8162571250, 09366801.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls your vehicle’s non-engine related electronic systems, such as power windows, locks, lights, wipers, security system, and instrument cluster functions.
Is this module ready to install out of the box?
Yes! We program the module to your vehicle’s specific VIN before shipping it to you. This makes it a plug-and-play installation, with no need for a trip to the dealer for additional programming.
Where is the BCM located on my truck?
On most compatible models like the S10, Blazer, and Jimmy, the BCM is located behind the center of the dash. On models like the Silverado, Sierra, Astro, and Safari, it is typically found on the driver’s side (LH) behind the dash.
Will this fix the ‘Security’ light on my dash?
Yes, a faulty BCM is a very common cause of a flashing security light and a no-start condition on these GM vehicles. Replacing it with our pre-programmed module is a reliable fix for this issue.
What happens if the airbag light comes on after installation?
This indicates the new BCM needs to be electronically synced with the vehicle’s airbag module (SDM). A simple procedure called ‘Setup SDM Primary Key in BCM’ can be performed by a technician with a professional diagnostic tool to resolve this.
Do I need to send my old BCM back?
No. This part is sold with no core charge, so you are not required to return your original module.