Are you battling bizarre electrical problems in your vehicle? Flickering dash lights, power windows with a mind of their own, or a security system that randomly prevents you from starting the engine? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command center for your car’s body electronics, a faulty BCM can turn a reliable vehicle into a source of constant frustration. In my 20+ years of diagnostics, I’ve seen how a single failing module can mimic a dozen different problems, leading to wasted time and money on incorrect repairs.
This is your direct, reliable solution. We offer a Body Control Module, part number 15093910, that arrives at your door fully programmed to your vehicle’s specific VIN. We load the latest, most stable software from GM, ensuring optimal performance and compatibility right out of the box. This eliminates the need for expensive dealership programming or specialized scan tools for the initial setup, saving you hundreds of dollars and significant downtime. Simply provide your VIN at checkout, and we handle the rest.
Case Study: A Tricky Diagnosis
I remember a 2012 Caprice PPV that came into the shop with a complaint of intermittent no-start and random interior light activation. The battery and alternator tested fine, but the scan tool showed a flurry of U-codes, indicating communication loss across multiple systems. The root cause? Not a wiring issue, but internal corrosion on the BCM’s circuit board from a minor windshield leak. Swapping in a VIN-programmed BCM like this one not only fixed the starting and lighting issues but also restored proper communication between all the vehicle’s modules instantly. It’s a perfect example of how the right part saves hours of diagnostic headaches.
Common Signs of a Failing BCM
If your vehicle is experiencing these issues, a failing BCM is the likely culprit. Replacing it can restore full functionality and peace of mind.
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft system light stays on, preventing the car from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
- ✔ Wipers or radio operating intermittently without user input.
Your Straightforward BCM Installation Guide
Installing your new 2011-2013 Caprice BCM is a manageable job for a confident DIYer. Follow these steps carefully for a smooth installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system capacitors to discharge.
- Locate the BCM: On the 2011-2013 Caprice, the BCM is typically located under the dashboard on the driver’s side. You may need to remove a lower dash panel for access. Refer to your service manual for the exact location on other models.
- 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 old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Post-Installation Checks: Reconnect the battery terminal. Start the vehicle and test all body functions: lights, locks, windows, wipers, and radio.
- Final Relearn Procedures: In some cases, additional steps may be needed. If your airbag light is on, an ‘Airbag System Sync’ may be required. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. These procedures typically require a bi-directional scan tool.
Verified Compatibility Across GM Models
This BCM is a direct replacement for part number 15093910 and is interchangeable with a wide range of other GM part numbers. It is guaranteed to fit the following vehicles, but always verify your original part number or consult your mechanic if unsure.
Note: Specific options or ID numbers may apply. Please review the full fitment list in the original data or contact us with your VIN to confirm.
Frequently Asked Questions
Do I need to do any programming after I receive this BCM?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, with no dealer programming required for basic vehicle operation. Some minor relearn procedures may be necessary post-installation.
What is a ‘core charge’ and do I have to pay one?
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this BCM. You can keep your old module, saving you the cost and hassle of a return shipment.
What if my airbag light comes on after installation?
This can happen because the new BCM needs to be synced with the airbag system’s Supplemental Deployment Module (SDM). A professional technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible diagnostic tool to resolve this.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, it’s a very manageable job. The main challenge is typically accessing the module under the dash. Our installation guide provides the key steps, but having a vehicle-specific service manual is always recommended.
Will this fix my 2011-2013 Caprice BCM communication issues?
Yes, if the BCM itself is the source of the failure. This module is the central hub for many communication networks. Replacing a faulty one is often the definitive fix for persistent U-codes and network-related symptoms.
What information do you need from me?
After you complete your purchase, please send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your BCM without it.