2008-2009 G8 Body Control Module BCM 20839063

Restore Your G8’s Electrical System

Fix frustrating electrical gremlins with this pre-programmed Body Control Module. It arrives flashed to your car’s VIN for a straightforward installation, resolving issues with lights, locks, and security systems. Provide your VIN at checkout and get your Pontiac working like new again.

$224.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-01465-760 Categories: ,
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Is your 2008-2009 Pontiac G8 suffering from bizarre electrical issues? The Body Control Module, or BCM, is the central command for your vehicle’s body electronics. When it fails, it can cause a wide range of frustrating problems, from flickering lights to a car that won’t start. This replacement Body Control Module is the definitive solution to restore your car’s functionality and reliability.

This isn’t just a part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN, loading it with the latest software updates directly from GM. This critical step ensures seamless integration with your G8’s existing systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN after purchase, and we’ll handle the rest, shipping you a part that’s ready for installation.

From the Diagnostic Bay
We had a 2009 G8 come in with the owner convinced he needed a new alternator and battery. The interior lights would pulse, the radio would cut out, and sometimes the security light would stay on, preventing it from starting. All tests on the charging system came back perfect. The real culprit was a failing BCM causing erratic voltage signals to various components. Installing a new, properly programmed BCM solved every single issue. It’s a classic case where the root cause is the computer, not the components it controls.

Common Failure Symptoms

  • ✔ Erratic or non-functional interior and exterior lights.
  • ✔ Power windows, locks, or mirrors working intermittently or not at all.
  • ✔ Vehicle security system faults or anti-theft light staying on.
  • ✔ Instrument cluster gauges behaving erratically or going dark.
  • ✔ Unexplained battery drain when the vehicle is off.
  • ✔ Communication errors with other vehicle modules (DTC U-codes).
  • ✔ Remote keyless entry failure.

Your Plug-and-Play 2008-2009 G8 Body Control Module Solution

Don’t let a faulty BCM keep your Pontiac G8 sidelined. This module is a direct replacement for a wide range of original equipment part numbers, including 20839063, 15819552, 25892622, and many others listed in the fitment guide. By matching the part to your VIN, we guarantee compatibility and proper function for all your vehicle’s specific options and features.

Important Post-Installation Information

While our programming handles the majority of the setup, some vehicles may require minor post-installation procedures. An Airbag System Sync may be needed if the airbag warning light illuminates after installation. This is a simple ‘Setup SDM Primary Key in BCM’ procedure that can be performed with a professional scan tool. Additionally, a Brake Pedal Position Relearn might be necessary to ensure correct brake light and traction control operation. Always consult a factory service manual or a qualified technician for vehicle-specific guidance.

Frequently Asked Questions

What does a Body Control Module do on a Pontiac G8?

The BCM acts as the central computer for your G8’s electronic accessories. It controls functions like power windows, locks, interior/exterior lighting, the security system, and communication between various electronic modules.

Is this BCM ready to install out of the box?

Yes! This module comes fully programmed to your vehicle’s VIN with the latest GM software. This allows for a straightforward installation without the need for dealer programming. Some minor relearn procedures may be required post-installation depending on your vehicle.

How do I provide my VIN for programming?

After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will use this to program the BCM specifically for your car’s options and features before we ship it.

What happens if the airbag light is on after installation?

If the airbag light is on, it means the new BCM needs to be synced with the airbag system’s SDM. A technician with a professional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.

Do I need to send my old BCM back?

No, there is no core charge for this part. You can keep your original module.

Will this fix my specific electrical problem?

This part corrects issues directly caused by a failing BCM. If you are experiencing symptoms like erratic lights, power accessory failure, or security system faults, a faulty BCM is the most likely cause. Proper diagnosis is always recommended.

Genuine OEM

Yes

Year
Condition

Refurbished

MPN

20839063

Interchange part number

PartNumber

591

Model

G8

Year

2013

Brand

GM

Manufacturer Part Number

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