2008-2009 G8 Body Control Module 25847588 Programmed to your VIN

Is Your Pontiac G8 Acting Possessed?

If your 2008-2009 Pontiac G8 is plagued by bizarre electrical issues—like power windows with a mind of their own, interior lights flickering, or a security system that randomly immobilizes the car—you’re not alone. These are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your car’s comfort and convenience features. When it starts to fail, it can turn your driving experience into a frustrating guessing game. In my 20+ years as a diagnostician, I’ve seen countless owners replace batteries and alternators, only to find the real culprit was the BCM all along.

The Direct-Fit, Programmed Solution

Forget expensive dealership diagnostics and programming fees. This Body Control Module is the straightforward, reliable solution you need. We take a high-quality, tested BCM and flash it with the latest official GM software, specifically matched to your vehicle’s VIN. This means it arrives at your door ready for installation, with no extra steps or specialized tools required for programming. It’s designed to restore your car’s functions precisely as the factory intended.

Common Symptoms of a Failing G8 BCM:

• ✔ Intermittent or non-functional power windows, door locks, or mirrors.
• ✔ Erratic interior or exterior lighting (lights staying on or not turning on).
• ✔ The security or anti-theft system preventing the car from starting.
• ✔ Inaccurate gauge readings or warning lights on the dash.
• ✔ Radio or climate control systems behaving unpredictably.
• ✔ Communication loss codes (U-codes) stored in the system.

Easy Installation for the 2008-2009 G8 Body Control Module

Installing your new BCM is a manageable DIY job. For the Pontiac G8, the BCM is typically located in the center dash area. While specific access may vary slightly, the general process is straightforward.

1. Safety First: Always disconnect the negative terminal from your car’s battery and wait 10-15 minutes to allow all modules to power down completely.
2. Locate the BCM: On the G8, access the BCM by removing the trim panels around the center console or glove box area. It’s a black box with several large electrical connectors.
3. Disconnect and Remove: Carefully unclip all electrical connectors. Note their orientation. Then, unbolt the module from its mounting bracket.
4. Install the New Module: Bolt the new, pre-programmed BCM into place. Reconnect all electrical connectors firmly until they click.
5. Reconnect Battery: Reattach the negative battery terminal.

CRITICAL: Post-Installation Procedures

After installing your new BCM, a few final steps are necessary to ensure all vehicle systems communicate correctly. These procedures require a professional-grade bidirectional scan tool.

• Airbag System Handshake: You must perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system (SDM) and will clear any related warning lights on the dash.
• Brake Pedal Position Sensor: Some vehicles require a recalibration of the Brake Pedal Position (BPP) sensor to ensure proper brake light function and stability control operation.

Note: If you are not equipped to perform these steps, a local independent shop can typically complete them quickly for you.

Guaranteed Compatibility

This module is a direct replacement for part number 25847588 and is also interchangeable with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084. It fits a wide range of GM vehicles, including the Pontiac G8 (2008-2009), Cadillac CTS, Chevy Impala, GMC Acadia, and many more. Please provide your VIN upon purchase to ensure perfect programming for your specific vehicle.