2008-2009 G8 Body Control Module 20935349 | Cloning Service

Restore Your G8’s Brain and End Electrical Chaos

Are you chasing electrical gremlins in your 2008-2009 Pontiac G8? Flickering lights, windows with a mind of their own, or a security light that prevents your car from starting can all point to one component: a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it malfunctions, it can cause a cascade of frustrating and hard-to-diagnose issues. This isn’t just an inconvenience; it’s a matter of reliability and safety. Stop throwing parts at the problem. This is a direct-fit, reliable solution.

We offer a straightforward fix with this genuine GM Body Control Module. The key to our service is that we perform a cloning service before it ever leaves our facility. Simply provide your vehicle’s VIN at checkout, and our technicians will flash the module with the latest GM software specific to your G8. This means no expensive trips to the dealership for programming. You receive a part that is ready for installation right out of the box, restoring your car’s functions to factory-perfect condition. Getting a pre-programmed 2008-2009 G8 Body Control Module is the most efficient way to get your vehicle back to 100%.

Is Your Pontiac G8 Showing These Signs?

A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, your BCM is the most likely culprit:

• ✔ Erratic interior or exterior lights (flickering, staying on, or not working at all).
• ✔ Power windows, door locks, or mirrors behaving erratically or failing completely.
• ✔ The security system light is illuminated, and the vehicle won’t start.
• ✔ Horn, radio, or climate control functions are intermittent or non-responsive.
• ✔ Diagnostic Trouble Codes (DTCs) related to communication loss with the BCM, such as U0140.
• ✔ False warnings on the instrument cluster (e.g., door ajar light when all doors are closed).

Your Straightforward BCM Installation Guide

Installing your new 2008-2009 G8 Body Control Module is a manageable job for a confident DIYer or any professional technician. Follow these general steps for a successful replacement.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: In the 2008-2009 Pontiac G8, the Body Control Module is typically located in the center dash area, often accessible by removing the glove box or a lower dash panel.
3. Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs, so be gentle. Once disconnected, unbolt the old BCM from its mounting bracket.
4. Install the New Module: Mount your new, pre-programmed BCM in place of the old one. Securely reconnect all electrical connectors, ensuring they click into place.
5. Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and verify that your lights, windows, locks, and other body functions are working correctly.
6. Perform Relearns (If Needed): As noted below, some vehicles may require a ‘Setup SDM Primary Key in BCM’ or a ‘Brake Pedal Position Relearn’ procedure if specific warning lights appear. This is typically done with a professional scan tool.

Important: Post-Installation Procedures

While this BCM is programmed for your VIN, certain vehicle systems may need to be re-synchronized after installation. Please be aware of the following potential requirements:

• Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade diagnostic tool to sync the new BCM with the airbag system.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and to prevent issues with the traction control system.

Disclaimer: Vehicle systems and procedures can vary. We always recommend consulting a factory service manual or a certified technician for your specific model.

Verified Vehicle Compatibility

This module is a direct replacement for part number 20935349 and a wide range of other GM part numbers. It is guaranteed to fit the following models (please verify your specific options):

This module also replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.

Frequently Asked Questions