Are you battling frustrating electrical issues in your GMC Savana or other compatible GM vehicle? A failing Body Control Module (BCM) is often the culprit behind a host of seemingly unrelated problems. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from your power windows and locks to the interior lights and security system. When it fails, it can make your vehicle feel unpredictable and unreliable. This replacement Body Control Module, part number 20815898, is the definitive solution to restore full functionality and peace of mind.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system engaging randomly, preventing the vehicle from starting.
- ✔ Instrument cluster gauges behaving erratically or warning lights staying on.
- ✔ Key fob losing its connection or not responding.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ A persistent battery drain that leaves you with a dead battery.
The Simple, Programmed Solution for Your 2008-2012 Savana BCM
Forget expensive dealership visits and complex programming procedures. We make this repair straightforward. When you purchase this BCM, you provide us with your vehicle’s VIN. Our technicians will then program the module with the latest GM software specific to your exact vehicle configuration. This ensures that when the part arrives, it’s ready for installation right out of the box. This VIN-matching service is crucial for a successful repair and is included with your purchase.
Post-Installation Information
While this module is designed for a direct fit, some vehicles may require a simple relearn procedure after installation to ensure all systems communicate correctly. These are not always necessary but are good to be aware of:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool will be needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with your vehicle’s airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure proper brake light and traction control operation.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Why do I need to provide my VIN?
Your vehicle’s VIN (Vehicle Identification Number) allows us to program the BCM with the correct software and settings for your specific model, year, and options. This makes the installation process much simpler and avoids compatibility issues.
Is this part truly plug-and-play?
Yes, because we pre-program it to your VIN, it is designed to be a plug-and-play installation. In some rare cases, as noted above, a simple relearn procedure for the airbag or brake sensor may be required.
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 turns on after I install this?
If the airbag light appears, it means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by a repair shop with a professional-grade diagnostic tool.
Will this BCM fit other vehicles besides the Savana Van?
Yes, this BCM is compatible with a wide range of GM vehicles. Please check the extensive fitment list on this page and verify that your original part number is listed to ensure a perfect match.