Are you battling frustrating electrical issues in your GM truck or van? Flickering lights, malfunctioning power windows, a security system that acts up, or a dashboard that seems to have a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM is the central computer for your vehicle’s body electronics, and when it starts to fail, it can cause a wide range of confusing and intermittent problems. This pre-programmed BCM is the definitive solution to restore full functionality and reliability to your vehicle’s accessories.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. 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 you get a BCM loaded with the latest software updates from GM, ensuring optimal performance and compatibility. Simply provide your VIN upon purchase, and we’ll handle the complex programming, saving you a costly trip to the dealership.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-working interior and exterior lights.
- ✔ Power windows, locks, or mirrors operating intermittently or not at all.
- ✔ The security or anti-theft light staying on, preventing the vehicle from starting.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Problems with the radio or climate control functions.
- ✔ A parasitic battery drain that kills your battery overnight.
From the Diagnostic Bay
We had a 2003 GMC Jimmy come into the shop with a classic BCM failure. The customer complained of a dead battery every morning and the radio randomly turning on and off, even with the key out of the ignition. After confirming a significant parasitic draw, we traced it directly to the BCM. Instead of a multi-day wait and a hefty programming bill from the dealer, we ordered a VIN-programmed module. The next day, it was a simple 30-minute swap. The parasitic draw was gone, all electronics worked perfectly, and the customer was back on the road without the typical dealership headache. This is the efficiency we provide with this part.
Installation and Post-Install Procedures for your 2002-2004 S10 BCM
Installation is designed to be straightforward. The BCM is typically located in the center dash area or under the steering column. Once the new, pre-programmed module is installed, most functions should work immediately. However, depending on your specific vehicle, a couple of additional steps might be necessary.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be performed with a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure the brake lights and traction control system function correctly.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
This module is a direct replacement for part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU, and fits a wide range of GM vehicles including the S10/Sonoma, Blazer/Jimmy, Astro/Safari, Silverado/Sierra, and more. Restore your vehicle’s electronic systems with confidence.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, security system, wipers, and instrument panel gauges.
Is this part difficult to install?
For someone with basic mechanical skills, the physical swap is generally not difficult. Because we pre-program the module to your VIN, you avoid the most complex part of the job. However, some vehicles may require post-installation procedures with a scan tool, as noted in the description.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive the VIN to perform the necessary programming.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
What if my airbag light is on after I install the new BCM?
This is a known possibility. The new BCM needs to be electronically introduced to the airbag module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure using a professional diagnostic tool to turn off the light.
Will this 2002-2004 S10 BCM fit other GM trucks?
Yes, this BCM fits a wide variety of GM trucks and vans from the era, including the Blazer, Jimmy, Astro, Safari, Silverado, Sierra, Tahoe, and Yukon. Please verify your original part number matches one of the listed compatible numbers.