Restore Your Van’s Electrical System with a Reliable BCM
If you’re dealing with baffling electrical problems in your 2008-2012 Savana 2500 Van, you’re not alone. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a dependable workhorse into a source of constant frustration. Itâs the central hub for your vehicle’s body electronics, and when it goes bad, it can cause a cascade of confusing issues. This isn’t just an inconvenience; for a work van, it’s downtime that costs you money. This replacement BCM is the definitive solution, arriving pre-programmed to your van’s specific VIN for a straightforward installation.
A Technician’s Notebook: The Savana with a Mind of Its Own
I remember a 2011 Savana 2500 that came into the shop with a list of complaints that seemed unrelated. The driver said the interior lights would flicker, the radio would randomly shut off, and sometimes the power door locks wouldn’t respond. He’d already replaced the battery and checked the main fuses. After hooking up the scan tool, I found a handful of ‘U’ codes, indicating a loss of communication between modules. This is a classic sign. The BCM was failing internally, sending erratic signals across the network. We installed a VIN-programmed module just like this one, and within an hour, every single issue was resolved. The customer was back on the road, his van working as reliably as the day he bought it.
Is Your Van Showing These Symptoms?
- â Power windows, locks, or mirrors working intermittently or not at all.
- â Interior dome lights staying on or not turning on.
- â The security or anti-theft light staying illuminated, preventing the engine from starting.
- â Erratic behavior from the dashboard gauges or warning lights.
- â Headlights or taillights acting strangely.
- â Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or U0164.
- â The air conditioning system not engaging properly.
The Advantage of a VIN-Programmed 2008-2012 Savana BCM
The biggest hurdle in replacing a modern BCM is the need for expensive, dealer-level programming. We eliminate that step for you. When you order, simply provide us with your vehicle’s 17-digit VIN. Our technicians will flash this module with the latest stable software from GM, ensuring it’s calibrated specifically for your van’s factory options. This makes the installation process significantly easier for both professional mechanics and DIYers, getting your vehicle fixed faster and saving you a trip to the dealership.
A Straightforward Guide to Installation
- â Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- â Locate the BCM: In most 2008-2012 Savana and Express vans, the BCM is located in the center dash area, often accessible by removing the lower dash panels.
- â Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- â Install the New Module: Mount the new, pre-programmed BCM in place of the old one. Securely reconnect all the electrical connectors into their correct ports.
- â Reconnect Power: Reattach the negative battery terminal.
- â Perform Relearn Procedures: Start the vehicle. Check all functions (lights, locks, windows). If an airbag light is on or brake functions seem off, you may need to perform the post-installation procedures detailed below with a capable scan tool.
Post-Installation Requirements
While this module is programmed for your van, some vehicle security and safety systems may require a final handshake after installation. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 20864767 and a wide range of other GM part numbers. It is compatible with many vehicles, including but not limited to:
Important: Please verify your original part number against our extensive cross-reference list to ensure a perfect match. The compatible part numbers are: 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
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will then program the BCM specifically for your vehicle before we ship it.
Is this a plug-and-play part?
It is designed to be as close to plug-and-play as possible because the main programming is done for you. However, as noted, some models may require additional relearn procedures for the airbag or brake systems, which require a professional scan tool.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls electronic accessories like power windows, lights, door locks, security systems, and climate controls.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
Will this BCM fix a ‘No Start’ problem?
It can. If your vehicle’s anti-theft system is managed by the BCM and it has failed, it can prevent the engine from starting. A new, correctly programmed BCM will resolve this specific cause of a no-start condition.