Restore Your Van’s Electrical Functions with a VIN-Programmed BCM
Is your 2008-2012 GMC Savana 3500 experiencing a frustrating array of electrical problems? From flickering dash lights and unresponsive power windows to a security system that won’t cooperate, a failing Body Control Module (BCM) can turn your reliable workhorse into a source of daily headaches. The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it creates chaos. This isn’t just an inconvenience; it can impact your vehicle’s safety and security systems.
Forget the expensive trip to the dealership and the hassle of coordinating programming. We offer a direct, reliable solution. This Body Control Module, part number 15921353, arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. You get a component that’s ready for installation, saving you significant time, money, and diagnostic frustration. This is the definitive fix for restoring order to your vehicle’s complex electrical network.
A Technician’s Notebook: The Intermittent Gremlin
A customer’s 2011 Savana 3500 came into the shop last month with a list of bizarre, intermittent issues. The radio would turn off randomly, the driver’s side power lock was dead, and the anti-theft light would flash, sometimes preventing the van from starting. They had already replaced the battery and checked fuses with no luck. After connecting my scan tool, I noticed communication errors between several modules, all pointing back to a single source. This is a classic symptom set I’ve seen in hundreds of GM vehicles. The original BCM was failing internally, causing a network-wide disruption. We installed one of our VIN-programmed BCMs, performed the necessary key relearn and SDM setup, and all the electrical gremlins vanished. The van was back on the road for its delivery routes the same afternoon—a simple fix for a very complex-seeming problem.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a faulty Body Control Module is a likely culprit. Replacing it can resolve these issues and restore proper functionality.
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The security system engaging randomly or causing a no-start condition.
- ✔ The horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights (like the airbag or ABS light) staying on.
- ✔ Communication error codes stored when checked with a professional scan tool.
Your Straightforward BCM Installation Guide
Installing your new BCM is manageable for a DIYer with basic tools. Following these steps ensures a smooth process. Remember to consult your vehicle’s specific service manual for detailed diagrams.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge before starting work.
- Locate the BCM: On the Savana/Express vans, the BCM is typically located in the center dash area. You may need to remove a few dash panels for access. On other GM models, it could be under the steering column or behind the dash on the driver’s or passenger’s side.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once all connectors are free, unbolt or unclip the module from its mounting bracket and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical connectors. Ensure they click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Post-Installation Procedures: This is a critical step. You will need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to ensure the airbag system communicates correctly and extinguish the warning light. Some vehicles may also require a Brake Pedal Position Sensor recalibration. A security or key relearn procedure is also typically required to allow the vehicle to start.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and is interchangeable with multiple part numbers. Please verify your vehicle is on this list. 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.
Note: Specific options or engine sizes may apply. Please match your part number or contact us with your VIN to confirm fitment.
Frequently Asked Questions
Do I need to program this 2008-2012 Savana 3500 BCM?
No, you do not! The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This handles the most complex part of the replacement, saving you a trip to the dealer.
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we receive this information for programming.
What tools are required for the post-installation procedures?
After physical installation, you will need a bi-directional scan tool (like a Tech 2, Snap-on, Autel, etc.) to perform the ‘Setup SDM Primary Key’ for the airbag system and potentially a brake pedal position sensor relearn. Most local repair shops can perform these functions if you don’t have the tool.
Will this BCM fix my specific problem?
This module is the solution for a wide range of body electrical faults. If your vehicle is showing symptoms from our list and diagnostics point to the BCM, this part is the correct fix. It resolves issues caused by internal BCM failure.
Is this a new or used part?
This is a high-quality, tested, and guaranteed functional component that has been expertly programmed with the latest official GM software for your vehicle. It is a reliable and cost-effective alternative to a new dealership part.