If you’re dealing with baffling electrical issues in your 2009-2012 Chevrolet Traverse, you’re not alone. As a technician with over two decades of experience, I’ve seen countless vehicles roll into my bay with symptoms that seem to defy logic: dome lights staying on, power windows with a mind of their own, or a dashboard lit up with random warning lights. More often than not, the culprit is a failing Body Control Module (BCM). This component is the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can cause system-wide chaos.
A failing BCM can be incredibly frustrating to diagnose. You might chase down wiring issues or replace individual switches, only to have the problem persist. This is because the BCM coordinates everything from your interior lighting and door locks to the anti-theft system and communication with other modules. Our solution is designed to eliminate the guesswork and get your Traverse back to normal, reliable operation without the exorbitant cost and hassle of a dealership visit.
A Technician’s Notebook: The Traverse with a Ghost
Case Study: A 2011 Traverse came in with a complaint list a mile long. The owner said the radio would randomly shut off, the power liftgate wouldn’t work, and the security light would flash, sometimes preventing the car from starting. A scan tool showed a dozen ‘U’ codes, all pointing to lost communication with various modules. Instead of replacing every part, we went straight to the source. We located the BCM on the left side of the dash, checked its power and ground connections (which were fine), and confirmed it was the faulty component. By providing a pre-programmed BCM, we saved the customer over $700 in dealership diagnostic and programming fees and had them back on the road the same afternoon. This is a classic example of how a single failing 2009-2012 Traverse BCM can mimic multiple other problems.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft system acting up, potentially causing a no-start condition.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Warning lights for the airbag (SRS), ABS, or traction control systems appearing intermittently.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or other ‘U’ codes.
- ✔ Wipers or horn activating unexpectedly.
A Straightforward Guide to Your BCM Swap
Replacing the BCM in your Traverse is a manageable job for a DIYer with basic tools. Our cloning service makes it a true plug-and-play repair. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge before starting any electrical work.
- Locate the BCM: On the 2009-2012 Traverse, the BCM is typically located on the driver’s side, up under the dashboard, often near the steering column or kick panel.
- Access the Module: You may need to remove a lower dash panel or trim piece to gain clear access. These are usually held in place with simple clips or a few screws.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Final Steps: Reinstall any trim panels you removed and reconnect the negative battery terminal. Start the vehicle and test all functions—lights, windows, locks, etc.—to ensure proper operation.
Note: After installation, some vehicles may require a Brake Pedal Position relearn or an Airbag System sync. See the FAQ section for more details.
Verified Vehicle Compatibility
This BCM, part number 15880684, is a direct replacement for a wide range of GM vehicles. While this listing is focused on the 2009-2012 Traverse BCM, it also fits the models listed below. Always verify your original part number against our list to ensure a perfect match.
Fits Models Including: Acadia (07-12), Enclave (08-12), Traverse (09-12), Equinox (07-09), Impala (06-12), Tahoe (10), Suburban (10), Escalade (10), Express/Savana Vans (08-12), and many others. Please check the detailed fitment list for your specific vehicle and options.
Frequently Asked Questions (FAQ)
Frequently Asked Questions
What exactly is the ‘Cloning Service’?
Our cloning service means we transfer the essential programming and vehicle-specific data (like VIN and security information) from your original BCM to the replacement unit. This makes the new module plug-and-play, avoiding expensive dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, you must send us your original module after purchase. We will clone the data and ship both your original and the newly programmed replacement back to you.
What does the Body Control Module do?
The BCM acts as the main computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, wipers, the anti-theft system, and more.
Will I need special tools for installation?
Typically, you will only need basic hand tools like a socket set and screwdrivers to remove dash panels. No special programming tools are required thanks to our cloning service.
What if my airbag light comes on after I install the new BCM?
In some cases, the BCM needs to be re-synced with the airbag system (SDM). This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be performed by any professional shop with a compatible high-end scan tool.
Is there a core charge?
No, there is no core charge. We require your original module for the cloning service and will return it to you along with the replacement unit.