Restore Your Traverse’s Electrical System with a Reliable Solution
Are you dealing with baffling electrical issues in your 2009-2012 Chevrolet Traverse? Flickering lights, malfunctioning power windows, random warning chimes, or a car that refuses to start can all point to a single culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and convenience features, a faulty BCM can turn your daily drive into a frustrating ordeal. Forget expensive dealership visits and complex programming. This is a straightforward, reliable fix designed to get you back on the road with confidence.
We offer a professional cloning service for this BCM. Simply send us your vehicle’s original module, and we will transfer all its critical data—including security information and vehicle-specific options—to this replacement unit. The result is a true plug-and-play module. Once you receive it back along with your original, you just install it, and your Traverse’s functions are restored. This process eliminates the need for costly and time-consuming dealer programming, making it the ideal choice for both DIY enthusiasts and professional repair shops.
A Technician’s Notebook
I recently had a 2011 Traverse in the bay that was driving its owner crazy. The power locks would cycle on their own, the radio would shut off intermittently, and the ‘Service StabiliTrak’ light was a permanent fixture on the dash. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of U-codes (communication loss codes) pointing to the BCM. Instead of a new, unprogrammed unit from the dealer, we opted for a cloned module. The swap took less than 30 minutes, and every single electrical gremlin vanished. It’s a classic case where a targeted, smart repair saves hundreds over dealership guesswork.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a failing 2009-2012 Traverse BCM is the likely cause. A failing BCM can often trigger communication-related Diagnostic Trouble Codes (DTCs), such as U0100, U0140, or other U-series codes.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system prevents the vehicle from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights (like ABS, Airbag, or StabiliTrak) illuminating for no reason.
- ✔ Wipers activating on their own or failing to operate.
- ✔ Rapid battery drain while the vehicle is off (parasitic draw).
Your Straightforward BCM Installation Guide
Installing your cloned BCM is a manageable job for a confident DIYer. The BCM in the 2009-2012 Traverse is typically located on the left-hand (driver’s) side of the dash, often near the steering column.
- Step 1: Disconnect the Battery. Always begin by disconnecting the negative terminal of your vehicle’s battery to prevent electrical shorts.
- Step 2: Locate the Original BCM. You will likely need to remove the lower dash panel beneath the steering wheel for access. The BCM is a small black box with multiple wiring harnesses connected to it.
- Step 3: Disconnect and Remove. Carefully unplug all electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Step 4: Install the Cloned Module. Mount the new, cloned BCM in the same location and securely reconnect all the wiring harnesses.
- Step 5: Reconnect and Test. Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, radio, and wipers to confirm the repair.
- Step 6: Perform Relearn Procedures if Needed. In some cases, you may need to perform a post-installation procedure like an Airbag System Sync or Brake Pedal Position Relearn if related warning lights appear.
Important Post-Installation Information
While our cloning service makes this a near plug-and-play process, some vehicle systems may require recalibration after the BCM is replaced. Please be aware of the following:
- ✔ Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be done with a pro-level scan tool to sync the systems.
- ✔ Brake Pedal Position Relearn: Some models may require this relearn to ensure brake lights and stability control work correctly.
- ✔ Core Return: Your original module is essential for the cloning process and will be returned to you along with the newly programmed unit. We do not keep your core.
Disclaimer: Procedures can vary slightly by vehicle year and specific options. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles and interchanges with numerous part numbers. While this listing is focused on the 2009-2012 Traverse BCM, it also fits models like the Acadia, Enclave, Impala, Tahoe, Yukon, Express/Savana vans, and more. Please verify your original part number against the list below to ensure compatibility.
Part Number: 20815898
Interchangeable Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
What exactly is a BCM cloning service?
Our cloning service involves transferring the exact software and vehicle-specific data (like VIN, key information, and optional features) from your original, failing BCM to this replacement unit. This makes the new module a perfect electronic match for your vehicle, eliminating the need for dealer programming.
How does the process work after I purchase?
After you place your order, you will need to ship your original Body Control Module to us. Once we receive it, we perform the cloning service and ship both your original module and the ready-to-install replacement back to you.
Will this fix my intermittent starting problem?
Yes, if the no-start issue is related to the vehicle’s anti-theft or security system, which is controlled by the BCM. A faulty BCM can fail to recognize your key, preventing the engine from starting. This cloned module will restore that function.
Is this something I can install myself?
For many DIYers with basic mechanical skills and tools, this is a very manageable installation. Since our cloning service removes the need for programming, it’s a simple swap. Please review our installation guide and assess your comfort level before starting.
What if my airbag light comes on after installation?
This is not uncommon. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be performed by most professional repair shops with a capable diagnostic tool.
Do you keep my old BCM?
No. Your original module is required for the data transfer and will always be returned to you along with the programmed replacement unit. There is no core charge or need to surrender your original part.