Restore Full Electrical Function to Your Buick Enclave
Are you dealing with bizarre and frustrating electrical issues in your 2008-2012 Buick Enclave? One moment the power locks don’t work, the next the radio is acting up, or worse, the vehicle won’t start at all. These are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and security features, a faulty BCM can wreak havoc. This replacement BCM, part number 15921352, is the definitive solution to get your Enclave back to normal.
The biggest hurdle with BCM replacement has always been the expensive and time-consuming programming required at a dealership. We eliminate that step entirely. Simply provide your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM software specifically for your Enclave. It arrives at your door ready for installation, saving you hundreds of dollars and significant downtime. This is the most efficient way to solve those electrical gremlins for good.
A Technician’s Notebook
I recently had a 2011 Enclave in the shop that was driving its owner crazy. The symptoms were all over the place: intermittent no-start, flickering interior lights, and the security light would randomly flash while driving. The owner had already replaced the battery and checked the main grounds. After hooking up my scan tool, I found a slew of ‘Lost Communication’ codes (U-codes), all pointing back to the BCM. A common failure point on these Lambda-platform SUVs is water intrusion from a clogged sunroof drain or a bad windshield seal, which drips directly onto the BCM located in the driver’s side dash. We installed one of our pre-programmed modules, and every single issue was resolved instantly. It’s a textbook BCM failure I’ve seen dozens of times.
Common Signs of a Failing BCM
If your vehicle is showing these symptoms, a failing BCM is the most likely cause. Don’t let a faulty module compromise your vehicle’s function and security.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system engaging randomly or preventing the car from starting.
- ✔ The horn sounding unexpectedly.
- ✔ Multiple unrelated warning lights on the dashboard.
- ✔ Diagnostic trouble codes (DTCs) like U0140, U0155, or other communication errors.
Your Straightforward BCM Installation Guide
Installing your new 2008-2012 Enclave BCM is a manageable job for a confident DIYer. While specific steps can vary slightly, here is a general guide for the Buick Enclave:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: On the Enclave, the BCM is typically located on the left (driver’s) side of the dashboard, often behind the lower dash panel near the steering column.
- Access the Module: You will likely need to remove the lower dash trim panel to gain access. This is usually held in by a few screws and clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. 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 electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc.—to ensure everything is working correctly.
- Perform Relearns (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 specific warning lights appear.
Post-Installation Requirements
Post-Installation Requirements
Your module comes programmed and ready to install. However, depending on your specific vehicle, some security or sensor relearn procedures may be needed after installation. These are standard for this type of repair.
Verified Compatibility for Your GM Vehicle
This BCM is a direct replacement for a wide range of GM vehicles. Please match your original part number to the list below to guarantee compatibility. This module replaces the following part numbers:
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
Frequently Asked Questions
- Do I need to send my old BCM back?
- No, there is no core charge for this module. You can keep your original part.
- Is this BCM difficult to install myself?
- For someone with moderate mechanical skill, it is a straightforward process. The main challenge is accessing the module’s location within the dash. Following our guide and having basic tools is all you need.
- What does ‘VIN Programmed’ mean?
- It means we load the module with your vehicle’s specific software using your Vehicle Identification Number (VIN). This ensures all the options your car came with from the factory (like keyless entry, specific lighting, etc.) work correctly with the new BCM.
- Will this fix my check engine light?
- A BCM typically controls body functions, not engine performance. If you have communication codes (U-codes) along with a check engine light, this may resolve the issue. However, if you only have engine-specific codes (P-codes), the problem likely lies with a different component, such as the Engine Control Module (ECM).
- What if my airbag light comes on after installation?
- This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by any professional shop with a capable bi-directional scan tool.