Are you battling frustrating electrical problems in your GMC Acadia or another compatible GM vehicle? Issues like malfunctioning power windows, erratic dashboard lights, or a car that refuses to start can often be traced back to a single component: the Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a failing BCM can cause a wide range of confusing and intermittent symptoms. This replacement Body Control Module, part number 20815898, is the reliable, plug-and-play solution to restore your vehicle’s functionality and peace of mind.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Interior or exterior lights flickering, staying on, or not turning on at all.
- ✔ The security system acting up, or the vehicle not starting due to a false anti-theft trigger.
- ✔ Dashboard warning lights (like Airbag or ABS) illuminating for no reason.
- ✔ Remote keyless entry failing to respond.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers operating erratically or not at all.
Why Choose Our Pre-Programmed Acadia Body Control Module?
Getting your vehicle back to perfect working order shouldn’t be a hassle. That’s why we offer this Acadia Body Control Module pre-programmed with the latest GM software updates specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after your purchase, and our technicians will flash the module before it ships. This critical step ensures that the BCM communicates flawlessly with your vehicle’s other systems right out of the box, saving you from expensive dealership programming fees and complex installation procedures. This is a direct-fit replacement for a wide range of original part numbers, ensuring broad compatibility across many GM models.
Installation and Post-Install Notes
While this module is designed for a straightforward installation, some vehicles may require simple relearn procedures after the new BCM is connected. These are not always necessary but are good to be aware of:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. This syncs the new BCM with the airbag system and can be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be required on certain models.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors a wide variety of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, security systems, and more. It acts as the central hub for these functions.
Is this part ready to install when I receive it?
Yes! This is the key benefit of our service. We program the module to your vehicle’s specific VIN before we ship it. This makes the installation process much simpler and helps you avoid a trip to the dealership for programming.
What information do I need to provide?
After you complete your purchase, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly for your specific vehicle options.
How do I know if this BCM will fit my vehicle?
This module fits a wide range of GM vehicles, including the 2007-2012 GMC Acadia. Please check the extensive list of compatible models and interchangeable part numbers in the description to confirm it matches your vehicle and original part.
What if my airbag light comes on after installation?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.