Restore Your Van’s Electrical System with a Reliable BCM
If you’re dealing with baffling electrical issues in your 2008-2012 Savana 2500 Van—like power windows with a mind of their own, flickering interior lights, or a security system that won’t cooperate—you’re not alone. These are classic signs of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it starts to go, it can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just an inconvenience; it can affect the safety and reliability of your workhorse van.
A Technician’s Notebook: The Intermittent Gremlin
I remember a fleet customer bringing in a Savana 2500 with a complaint that drove their driver crazy: sometimes the dome lights wouldn’t turn off, draining the battery overnight. Other times, the power locks wouldn’t respond. They had already replaced the battery and checked fuses. After hooking up my scan tool, I saw intermittent communication loss codes (U0140) with the BCM. These ghost-like issues are textbook BCM failure. Internal circuit board corrosion, often from moisture, creates these unpredictable faults. Replacing the BCM with a properly programmed unit solved every single issue and got their van back on the road reliably.
Common Signs of a Failing BCM
A faulty Body Control Module can manifest in numerous ways. If your van is experiencing any of the following, a failing BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ The horn sounding randomly or not working when needed.
- ✔ The radio or infotainment system malfunctioning.
- ✔ False warnings on the dashboard, such as a ‘Service Theft System’ light.
- ✔ Diagnostic trouble codes (DTCs) related to lost communication, such as U0140, U0155, or other U-codes.
The Smart Solution: VIN-Programmed and Ready to Install
The biggest hurdle in replacing a BCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. When you purchase this module, simply provide us with your vehicle’s VIN. Our technicians will flash the BCM with the latest GM software specific to your 2008-2012 Savana 2500 BCM, ensuring it communicates perfectly with your van’s other systems right out of the box. This saves you time, money, and the headache of scheduling a dealer appointment.
A Straightforward Guide to Installation
For the confident DIYer or professional mechanic, installing this BCM is a manageable job. In most Savana and Express vans, the BCM is located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: Access the BCM by removing the necessary dash trim panels. It’s typically a black plastic box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Post-Installation Steps: Start the vehicle and check for proper function of all accessories. Note that some vehicles may require additional relearn procedures as outlined below.
Important Post-Installation Procedures
While this module comes programmed, certain vehicle systems may need to be re-synced after installation for full functionality and to clear any warning lights. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure the brake lights and traction control system function correctly.
Disclaimer: Specific procedures can vary by exact year and model. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part number 15093910 and interchanges with numerous other GM part numbers. It is compatible with a wide range of vehicles, including but not limited to:
Please verify your part number or contact us with your VIN to confirm fitment.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more. When it fails, these systems can become unreliable.
Why do you need my VIN for programming?
Your Vehicle Identification Number (VIN) allows us to load the exact software and settings your specific vehicle requires. This ensures the BCM works seamlessly with your van’s options and other electronic modules, preventing compatibility issues.
Is this installation difficult for a DIYer?
For someone with basic mechanical skills and tools, the physical replacement is straightforward. The main challenge can be accessing the module behind the dash. The key benefit here is that our pre-programming removes the need for dealer-level computer access for the initial setup.
What happens if I don’t perform the post-install procedures?
If a relearn is required and not performed, you may have a persistent warning light (like the airbag light) or a system that doesn’t function correctly (like traction control). These procedures sync the new BCM to related safety and performance systems.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your original module without needing to send it back to us.