Restore Full Electrical Function to Your Buick Enclave
If you’re dealing with baffling electrical issues in your 2008-2012 Buick Enclave—like power windows with a mind of their own, flickering interior lights, or random warning messages on your dash—you’ve likely met the culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can impact safety systems and leave you stranded.
This replacement Body Control Module, part number 20935349, is the definitive solution. Forget expensive dealership visits and towing fees. We offer a professional cloning service that makes this a straightforward, plug-and-play repair. Simply provide us with your vehicle’s VIN at checkout, and our technicians will flash this module with the latest GM software specific to your Enclave. It arrives at your door ready for installation, saving you hundreds in dealer programming fees.
A Technician’s Notebook: The Intermittent Gremlin
I had a 2011 Enclave in my bay last month that was driving its owner crazy. The radio would randomly shut off, the liftgate wouldn’t open, and occasionally the security light would stay on, causing a no-start. There were no consistent trouble codes, just a slew of intermittent communication errors (U-codes). After checking the main power and ground connections to the BCM, we found they were solid. The issue was internal to the module itself—likely a cracked solder joint on the main board that would lose connection with changes in temperature. Replacing the BCM with a pre-programmed unit like this one resolved all issues instantly. It’s a common failure point I’ve seen on dozens of these GM platforms.
Common Signs of a Failing BCM
A bad BCM can manifest in numerous ways. If your Enclave is showing these symptoms, it’s time to consider a replacement:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light stays illuminated, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights (like ABS, Airbag, or StabiliTrak) coming on and off without reason.
- ✔ Diagnostic trouble codes related to communication loss, such as U0140 (Lost Communication With Body Control Module).
- ✔ Wipers operating incorrectly or not parking in the correct position.
Your Straightforward BCM Installation Guide
Installing your new 2008-2012 Enclave Body Control Module is a manageable job for a confident DIYer. The BCM is typically located on the left-hand (driver’s) side of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: On the Enclave, you’ll usually find the BCM mounted to the left of the steering column, behind the lower dash panel. You will need to remove this panel for access.
- Disconnect and Remove: Carefully unplug the multiple electrical connectors from the old BCM. They have locking tabs that must be depressed to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the ignition to the ‘ON’ position (without starting the engine) and test all body functions: lights, locks, windows, wipers, etc.
- Perform Relearns (If Needed): Start the vehicle. If you see an airbag light or experience issues with brake lights, refer to the post-installation procedures below. These may require a scan tool to complete.
Verified Vehicle Compatibility List
This module is a direct replacement for a wide range of GM vehicles and part numbers. While this listing is for the 2008-2012 Enclave Body Control Module, it also fits the following models. Please verify your part number is on this list: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
- ACADIA 07-12
- AVALANCHE 1500 10
- CAPRICE 11-13
- CAPTIVA SPORT 12
- CTS 08-13
- DTS 06-11
- ENCLAVE 08-12
- EQUINOX 07-09
- ESCALADE / ESV / EXT 10
- EXPRESS 1500/2500/3500 VAN 08-12
- G8 08-09
- HUMMER H2 08-09
- IMPALA 06-13
- LUCERNE 06-11
- MONTE CARLO 06-07
- OUTLOOK 07-10
- SAVANA 1500/2500/3500 VAN 08-12
- SRX 07-09
- STS 10
- SUBURBAN 1500 10
- TAHOE 10
- TORRENT 07-09
- TRAVERSE 09-12
- VUE 08-10
- YUKON / YUKON XL 1500 10
Note: Specific options and IDs may apply. Always match your part number or contact us with your VIN to confirm fitment.
Do I need to do any programming after I receive this BCM?
Do I need to do any programming after I receive this BCM?
No. We handle all the programming before shipment. We use the VIN you provide to flash the module with the correct software and vehicle-specific settings. It is designed to be a plug-and-play installation.
What happens to my original BCM? Do I need to send it in?
This is a cloning service. After you place your order, you will send us your original module. We will transfer all the necessary data to the replacement unit and then ship BOTH modules back to you. We do not keep your original part.
What is the ‘Airbag System Sync’ procedure?
In some cases, after installing the new BCM, the airbag warning light may illuminate. This is because the BCM and the SDM (airbag module) need to re-establish their security handshake. A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function to sync them and clear the light.
Will I need to perform a Brake Pedal Position relearn?
It’s possible. Depending on your specific model and options, a brake pedal position sensor relearn might be necessary to ensure systems like traction control, stability control, and cruise control function correctly. This also typically requires a bi-directional scan tool.
Is this a new or used part?
This is a professionally inspected and verified, high-quality used OEM part. Each module is thoroughly tested to ensure it meets or exceeds original factory performance before being programmed for your vehicle.
Disclaimer: Vehicle systems are complex. Specific procedures can vary by exact year, make, and model. Always consult a factory service manual or a qualified technician if you are unsure about any step of the process.