Is your GM truck or SUV suffering from strange electrical problems?
If you’re dealing with flickering lights, malfunctioning power windows and locks, or a security system that has a mind of its own, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a wide range of frustrating and unpredictable issues. This replacement BCM, part number 15081796, is the definitive solution to restore full functionality to your vehicle.
From the Diagnostic Bay
We had a 2004 GMC Jimmy come in with a classic case of electronic gremlins. The owner said the dome light would stay on, the radio would randomly shut off, and the power locks worked only when they wanted to. He’d replaced the battery and checked fuses, but nothing worked. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed units. The entire job took less than an hour, and all the strange electrical issues were gone. It’s a common story for these vehicles, and this part is the go-to fix.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security or anti-theft light flashing, preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working.
- ✔ Wipers operating intermittently or not parking correctly.
- ✔ False warnings on the instrument cluster (e.g., “Door Ajar”).
- ✔ Communication errors when scanning with a diagnostic tool.
Why Choose a Pre-Programmed Blazer S10 Body Control Module?
Getting back on the road shouldn’t be complicated. That’s why this module is a complete, ready-to-install solution. We take the hassle out of the repair by pre-programming the BCM to your vehicle’s specific VIN. This means it arrives at your door with the latest GM software updates already installed, eliminating the need for expensive dealership programming. This direct-fit module is compatible with a wide range of GM trucks and SUVs from 2002-2005, including the Chevrolet Blazer, GMC Jimmy, Silverado, Sierra, Tahoe, Yukon, Astro, and Safari. Please verify your part number against our cross-reference list: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU.
Important Post-Installation Information
While this module is designed for a simple installation, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Is this BCM really plug-and-play?
Yes, for most vehicles. Because we program it with your VIN, it eliminates the need for dealer programming. In some cases, minor relearn procedures, like for the airbag or brake pedal sensor, may be required after installation using a capable scan tool.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information.
What does a Body Control Module do?
The BCM acts as the brain for your vehicle’s electronic accessories. It controls functions like power windows, locks, interior and exterior lighting, the security system, wipers, and more.
Why is the airbag light on after installing the new BCM?
The airbag system (SDM) and the BCM are linked for security. If the light is on, it means they need to be re-synced. A technician with a high-level scan tool can perform the “Setup SDM Primary Key in BCM” procedure to resolve this.
Do I need to return my old part?
No, there is no core charge for this part. You can keep your original module.
Will this fit my vehicle if my part number is slightly different?
This module replaces several part numbers. Please check if your original part number is on our list: 15063578, 15081796, 15095334, 19208537, DKAK, or DPNU. If it is, this part is the correct replacement for your vehicle.