Is your 2008-2012 Savana 3500 Van plagued by baffling electrical issues? As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable workhorse into a source of constant frustration. One day the power locks work, the next they don’t. The interior lights flicker, the security system prevents a start, or the dashboard lights up with random warnings. These aren’t just annoyances; they’re symptoms of a failing central nervous system. This BCM is the definitive, hassle-free solution.
Forget about towing your van to the dealership and paying steep fees for diagnostics and programming. We take the complexity out of the repair. Simply provide your vehicle’s VIN during checkout, and we will program this module with the latest GM software specifically for your van. It arrives at your door ready for installation, saving you significant time and money. This is the same professional-grade fix I’d perform in my own shop, now available directly to you.
From the Diagnostic Bay: The Case of the Work Van Ghost
A local contractor brought in his ’11 Savana 3500. His complaint was a classic “electrical ghost.” The radio would shut off, the dome light would stay on, and occasionally, the van wouldn’t start, showing only a flashing security light. He’d already replaced the battery and checked the grounds. After hooking up my scan tool, I saw a slew of U-codes, specifically U0140 (Lost Communication With Body Control Module). This is a dead giveaway. The BCM wasn’t communicating properly with other modules on the network. We installed one of these pre-programmed BCMs, and in under an hour, the ghost was gone. The van was back on the job, and the contractor avoided a costly, multi-day stay at the dealership.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft system light is illuminated, causing a no-start condition.
- ✔ Inconsistent or failed operation of the horn, windshield wipers, or radio.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ False warnings on the instrument cluster (e.g., ‘Door Ajar’ when all doors are closed).
A Straightforward Guide to BCM Installation
For the handy DIYer or professional mechanic, swapping the BCM in a Savana or Express van is a manageable job. The unit is typically located behind the center dash panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. On most Savana/Express vans, this involves removing the center console storage bin or radio bezel.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip 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. Ensure they click into place.
- Reconnect Power: Re-install the dash trim and reconnect the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all body functions—lights, locks, windows, etc. Note the post-installation procedures below, as some relearns may be required.
Important Notes on Post-Installation Procedures
While we handle the primary programming, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal. Specifically:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light and traction control operation.
This module comes with a No Core Charge policy, so you can keep your old part without any extra fees.
Will This Fit My Vehicle?
This BCM is a direct replacement for part number 15880684 and a wide range of other GM part numbers. It is guaranteed to fit the following models, among others. Please verify your part number or contact us with your VIN to confirm.
Frequently Asked Questions
Do I need to program or flash this BCM?
No. We handle all the programming for you before shipment. Just provide your vehicle’s VIN at checkout, and it will arrive ready to install with the latest GM software.
Where is the BCM located on my 2010 Savana 3500 Van?
On the 2008-2012 Savana and Express vans, the Body Control Module is typically located in the center dash area, often behind the radio or climate controls.
What does ‘No Core Charge’ mean?
It means you do not have to send your old, faulty BCM back to us. There are no extra charges or deposits, which simplifies the process for you.
Will this fix my van’s security light and no-start problem?
Yes, a failing BCM is a very common cause of security system-related no-start issues in these GM vehicles. Replacing it with our correctly programmed module is a highly effective solution for this specific problem.
What if my airbag light comes on after I install it?
This is an infrequent but possible outcome. It simply means the new BCM needs to be electronically synced with the vehicle’s airbag module (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be performed by a repair shop with a professional-level diagnostic tool.