Are you experiencing bizarre electrical issues with your 2008-2009 Pontiac G8? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM is the central computer for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and difficult-to-diagnose problems. This replacement Body Control Module, part number 25934763, is the definitive solution to restore full functionality to your vehicle.
We take the guesswork and high cost out of the repair process. Unlike a dealership that requires you to bring your car in for expensive programming, we program this module to your vehicle’s specific VIN before we ship it. This means it arrives at your door ready for a straightforward installation. Simply provide us with your VIN after purchase, and we’ll handle the rest, loading the latest GM software updates for optimal performance and reliability.
Common Symptoms of a Failing 2008-2009 G8 Body Control Module
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior.
- ✔ False security system alarms or a ‘Service Theft System’ message.
- ✔ Unexplained battery drain that kills your battery overnight.
- ✔ Instrument cluster gauges behaving erratically or not working at all.
- ✔ Problems with the keyless entry or remote start systems.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
This module is a direct-fit replacement for a wide range of GM vehicles, ensuring broad compatibility. It replaces numerous part numbers, including: 15828601, 15921353, 20815898, 20935349, 22860591, 25892622, 25934763, and many more. By installing this pre-programmed unit, you are restoring the vehicle’s electronic nervous system to factory-spec condition.
Installation and Post-Install Considerations
Installation is typically plug-and-play. The BCM is located in the center dash area. While our VIN programming handles the majority of the setup, some vehicles may require additional relearn procedures after installation. These can include:
- Airbag System Sync: If your airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be necessary.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Frequently Asked Questions
Do I need to take my car to the dealer for programming?
No. We program the BCM to your car’s VIN before shipping it to you. This makes the unit ready for installation right out of the box, saving you time and money.
What exactly does the Body Control Module do?
The BCM acts as the central hub for your car’s body electronics. It controls non-engine related functions like power windows, locks, lights, security system, wipers, and instrument cluster warnings.
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information.
Is this a guaranteed fix for my car’s electrical problems?
A faulty BCM is a very common cause for the symptoms listed. While this part will fix a defective BCM, you should ensure your vehicle has been properly diagnosed. Check for issues with wiring, grounds, or other modules first.
Are there any other steps after plugging it in?
In most cases, it is a simple plug-and-play installation. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which may require a professional scan tool.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.