Restore Full Functionality to Your Chevrolet Traverse
Is your 2009-2012 Chevrolet Traverse suffering from bizarre electrical problems? Flickering lights, malfunctioning power windows or locks, a security system that acts up, or even a no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM goes down, it can create a cascade of frustrating and confusing issues. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
Forget the expensive trip to the dealership and the hassle of scheduling programming. We offer a direct, reliable solution. This Body Control Module is a direct-fit replacement, and best of all, we program it to your vehicle’s specific VIN before we ship it. This means it arrives at your door ready for installation, loaded with the latest GM software updates to ensure peak performance and reliability. By matching the programming to your VIN, we ensure all your vehicle’s original features work as intended.
Case Study: A Tricky Diagnosis
A customer’s 2011 Traverse came into the shop last month with a laundry list of complaints: the radio would turn on and off by itself, the driver’s side power window wouldn’t work, and the key fob was intermittent. They had already replaced the battery and checked the fuses. After connecting my scan tool, I saw multiple communication error codes across different systems, all pointing back to one place. This is a classic symptom of an internal BCM failure. On these Lambda-platform SUVs, I’ve seen this happen from simple age or, more commonly, voltage irregularities. Swapping in a VIN-programmed 2009-2012 Traverse BCM solved every single issue instantly, saving the customer hundreds compared to a dealership repair.
Is Your Traverse Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system or alarm randomly activating.
- ✔ Key fob not being recognized or working intermittently.
- ✔ Instrument cluster warning lights (like the airbag light) illuminating for no reason.
- ✔ The vehicle failing to start, even with a good battery and starter.
- ✔ Communication errors with diagnostic scan tools.
A Straightforward Guide to Installation
Installing your new 2009-2012 Traverse BCM is a manageable job for a confident DIYer. The BCM is typically located on the left (driver’s) side of the dash, often behind the lower trim panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: Remove any lower dash panels or trim necessary to gain clear access to the old BCM. It’s usually a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses from the old BCM. Most have a locking tab that needs to be depressed or a lever that needs to be swung over. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the wiring harnesses. You should hear a click as they lock into place.
- Power Up: Reinstall any trim panels you removed and reconnect the negative battery terminal.
- Perform Relearn Procedures: Start the vehicle and follow the post-installation steps below to ensure all related systems are properly calibrated.
Important Post-Installation Steps
After replacing your Body Control Module, a few final procedures are critical for restoring full, safe operation. While our programming handles the core functions, the BCM needs to handshake with other modules in the vehicle.
- Airbag System Reset: To clear the airbag warning light, the ‘Setup SDM Primary Key in BCM’ procedure must be performed. This requires a professional-grade diagnostic scan tool and ensures the airbag system is fully operational.
- Brake Pedal Position Sensor Relearn: Some vehicles will require a brake pedal position sensor relearn. This procedure recalibrates the sensor to the new BCM, which is vital for proper brake light operation and stability control performance.
- Note: The exact requirements can vary. If you are unsure about these final steps, we strongly recommend consulting a professional technician to complete the installation.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15872421 and is compatible with a wide range of GM vehicles. Please verify your vehicle is on this list. This unit replaces numerous interchangeable part numbers, including: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15880684, 15921352, 20815898, 22860591, and many more.
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior and exterior lighting, security system, key fob recognition, and instrument panel indicators.
Is this part really ‘plug-and-play’ since it’s pre-programmed?
Yes, for the most part. We program the module to your VIN so it communicates correctly with your vehicle’s systems, which avoids a trip to the dealer for initial programming. However, as noted above, you may still need a scan tool for post-installation relearn procedures like the airbag system reset and brake pedal sensor calibration to finalize the installation.
What do you need from me after I place my order?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your module without it. This ensures we load the correct software for your specific model and options.
Will this fix my check engine light?
Generally, no. The check engine light is related to the engine and emissions systems, which are controlled by the Engine Control Module (ECM) or Powertrain Control Module (PCM). A BCM primarily resolves issues with body electronics and accessories.
Where is the BCM located on my 2009-2012 Traverse?
On the Chevrolet Traverse and its platform mates (Acadia, Enclave), the BCM is located inside the cabin, on the driver’s side, attached to the left side of the dashboard assembly. You will need to remove the lower dash panel to access it.