Restore Full Electrical Function to Your GM Vehicle
Are you battling frustrating electrical gremlins in your Chevrolet Traverse, GMC Acadia, or other compatible GM model? Flickering lights, malfunctioning power windows, a security system with a mind of its own, or intermittent no-start conditions are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it falters, it can create a cascade of confusing and unpredictable problems. This genuine GM Body Control Module, part number 20864768, is the definitive solution to restore order and reliability to your vehicle.
From the Diagnostic Bay
We had a 2011 Enclave come in that was driving the owner crazy. The radio would change stations on its own, the interior lights would pulse dimly at night, and the liftgate would occasionally refuse to open. After checking all the usual suspects like grounds and wiring, we pinpointed the BCM. It was failing internally, sending erratic signals throughout the vehicle. Installing a VIN-programmed BCM like this one resolved every single issue in one go. It’s a fix that brings immediate relief from those hard-to-diagnose electrical headaches.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ The vehicle’s security system engaging randomly or preventing the car from starting.
- ✔ Horn sounding unexpectedly or not working when needed.
- ✔ Dashboard warning lights (like the airbag or brake light) illuminating without a clear cause.
- ✔ Wipers operating intermittently or at the wrong speed.
Why Choose Our Pre-Programmed 2009-2012 Traverse BCM?
Replacing a BCM isn’t just about swapping hardware. A new module must be programmed specifically to your vehicle’s Vehicle Identification Number (VIN) to communicate with other onboard computers and recognize its specific options. Our service eliminates the most difficult step. We flash this module with the latest GM-certified software updates using your VIN before it ships. This means no expensive trips to the dealership for programming. You receive a part that is ready for installation, saving you time, money, and hassle. With no core charge, you don’t have to worry about the cost or logistics of sending your old part back.
Important Installation Notes
While this 2009-2012 Traverse BCM is designed for a straightforward installation, some vehicles may require additional steps after the part is installed. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light operation and stability control function.
We always recommend consulting a factory service manual or a qualified automotive technician if you are unsure about these procedures.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors many of the electronic accessories not related to the engine, such as power windows, locks, lights, security system, and wipers.
Do I need to get this module programmed?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software specific to your vehicle.
What happens if I forget to provide my VIN?
We cannot program or ship your BCM without your VIN. Your order will be placed on hold, and we will contact you. Providing the VIN at the time of purchase ensures the fastest possible processing and shipping.
Is this a direct plug-and-play installation?
For most vehicles, it is. However, as noted, some models may require a simple relearn procedure for the airbag system or brake pedal position sensor, which requires a professional diagnostic tool.
My original part number is different. Will this still work?
Yes. This BCM, part number 20864768, is the updated replacement for a wide range of earlier part numbers. Please check the extensive compatibility list on this page to confirm it replaces your specific original part number.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module without any additional fees.