2008-2009 Pontiac G8 Body Control Module BCM 20921435

Restore Your G8’s Electrical System

Fix common electrical problems with our VIN-programmed Body Control Module for the 2008-2009 Pontiac G8. This BCM is programmed to your car before shipping for a straightforward installation. No core charge required. Order today to get your G8 working like new again!

$224.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-01465-856 Categories: ,
Guaranteed Safe Checkout

Are you experiencing frustrating electrical issues with your 2008-2009 Pontiac G8? Problems like flickering lights, unresponsive power windows and locks, or strange warning messages on your dash are often caused by a failing Body Control Module (BCM). The BCM acts as the central nervous system for your car’s body electronics, and when it fails, it can create a cascade of confusing and unpredictable symptoms. Restore your vehicle’s functionality and peace of mind with our direct-fit, VIN-programmed Body Control Module.

This isn’t just a replacement part; it’s a complete solution. We take the hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before it ships. This critical step ensures compatibility with your G8’s unique options and security systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN at checkout, and we’ll handle the rest.

From the Diagnostic Bay
We had a 2009 G8 GT come into the shop with a laundry list of complaints. The owner said the key fob worked intermittently, the interior dome light would stay on, and the driver’s side window would sometimes refuse to go down. He had already replaced the battery and checked fuses. After hooking up our diagnostic tool, we saw multiple communication errors pointing back to the BCM. Instead of a complex wiring chase, we installed a VIN-programmed BCM. The moment it was connected and the relearn procedures were done, every single issue was resolved. It’s a perfect example of how this single component can solve a dozen different problems.

Common Symptoms of a Failing G8 BCM

  • ✔ Intermittent or non-working power windows, door locks, or mirrors.
  • ✔ Erratic behavior from interior or exterior lighting.
  • ✔ The security system acting up or preventing the car from starting.
  • ✔ Key fob not being recognized by the vehicle.
  • ✔ False warning lights on the instrument cluster (e.g., ABS, Traction Control).
  • ✔ HVAC (Air Conditioning and Heat) controls not responding correctly.
  • ✔ Radio or infotainment system malfunctions.

Why Choose Our 2008-2009 G8 Body Control Module?

This module is a reliable and cost-effective alternative to the dealership. It is meticulously inspected and then programmed with the latest GM software updates for your specific vehicle. This ensures optimal performance and longevity. By matching it to your VIN, we ensure that the module communicates flawlessly with your car’s other computers, like the ECU and TCU. Installation is straightforward for an experienced DIYer or any professional mechanic. While the unit is plug-and-play, please be aware of potential post-installation steps.

Post-Installation Procedures

After installing your new 2008-2009 G8 Body Control Module, some vehicles may require additional steps to sync the new module with existing systems:

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

Disclaimer: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.

This BCM is a direct replacement for a wide range of part numbers, including: 10382479, 15093910, 15276271, 15819552, 20921435, 22860591, 25892622, and many more.

Frequently Asked Questions

Do I need to get this BCM programmed by a dealer?

No. We pre-program the module to your vehicle’s VIN before we ship it to you. This saves you time and money, making the installation process much simpler.

What information do you need from me?

After you place your order, you must provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot process and ship your order without it.

Where is the BCM located on a 2008-2009 Pontiac G8?

On the Pontiac G8, the Body Control Module is typically located in the center dash area, often behind or near the glove box.

Will this fix my airbag light?

Replacing the BCM can sometimes trigger the airbag light. If this happens, the system needs to be re-synced using a professional scan tool, as mentioned in the post-installation procedures. The BCM itself is not the airbag module.

Is there a core charge for my old part?

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

Genuine OEM

Yes

Year
Condition

Refurbished

MPN

20921435

Interchange part number

PartNumber

591

Model

G8

Year

2013

Brand

GM

Manufacturer Part Number

, , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Scroll to Top