Are you battling bizarre electrical issues in your GM truck or van? Flickering lights, unresponsive power windows, a security system that has a mind of its own, or an intermittent no-start condition can all point to a single, central culprit: a failing Body Control Module (BCM). The BCM is the nerve center for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of frustrating and hard-to-diagnose problems. Restore your vehicle’s functionality and peace of mind with our pre-programmed BCM, a direct-fit solution for part number 15063578.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Vehicle security system faults or the ‘Security’ light staying illuminated.
- ✔ Intermittent no-start or no-crank conditions.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Diagnostic scan tools being unable to communicate with the module.
Why Choose Our Programmed 2002 Sierra Denali BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The biggest hurdle in replacing a BCM is the required programming. Our service eliminates that step for you. We take your vehicle’s VIN, flash this module with the latest, most stable software directly from GM, and ship it to you. This means no expensive trip to the dealership for programming. You get a reliable part that is truly plug-and-play, getting your truck back on the road faster. This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU, ensuring wide compatibility.
Important Post-Installation Information
While our BCM is programmed for plug-and-play installation, certain vehicle systems may require a ‘handshake’ with the new module. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM and clear the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure your brake lights and traction control system function as intended.
Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls and monitors many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, security system, wipers, and more. It acts as a central hub for these systems.
Is this BCM truly plug-and-play?
Yes, for the vast majority of functions. We program it to your vehicle’s VIN before shipping, which handles the critical setup. In some cases, as noted above, a secondary relearn procedure for systems like the airbags may be required with a scan tool.
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 program and ship the module without it. Please double-check it for accuracy.
What happens if the airbag light comes on after installation?
This is a common security measure. The airbag system (SDM) needs to be electronically introduced to the new BCM. A technician with a capable bi-directional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No. This product has no core charge. You can keep your original module.
Will this fit my vehicle?
This BCM fits a wide range of 2002-2005 GM trucks and vans. Please check the detailed fitment list on this page and ensure your original part number is one of the listed compatible numbers (15063578, 15081796, etc.) to guarantee a perfect match.