If your 2008-2012 GMC Savana 3500 Van is suddenly plagued by electrical gremlins—flickering lights, malfunctioning power windows, a security system that has a mind of its own, or worse, a no-start condition—the Body Control Module (BCM) is a very likely culprit. As the central nervous system for your vehicle’s body electronics, a failing BCM can bring your work van to a grinding halt, costing you time and money. This isn’t just an inconvenience; it’s a direct hit to your productivity. We offer a dependable and straightforward solution.
This is a direct-fit replacement Body Control Module for your Savana Van, which also fits a wide range of other GM vehicles. The best part? It comes with our professional Cloning Service. This means you send us your original BCM, and we transfer all the critical, vehicle-specific data—like key information and security settings—to this replacement unit. The module arrives at your door ready for installation, with the latest GM software updates applied based on your VIN. This process eliminates the need for expensive and time-consuming programming at a dealership, getting you back on the road faster.
Case Study: A Tricky Diagnosis
I remember a fleet manager bringing in a 2011 Savana 3500 work van that was driving his technicians crazy. The complaint was intermittent: some days the interior lights wouldn’t turn off, draining the battery overnight. Other days, the power door locks wouldn’t respond. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed several ‘loss of communication’ codes (U-codes) pointing to the BCM. Instead of a costly new module from the dealer requiring multiple programming sessions, we used a cloned unit. We transferred the data from his faulty module to the replacement. The van was back in service the next day with all electrical functions restored, saving the company hundreds in dealership labor and vehicle downtime.
Is Your Van Showing These BCM Failure Signs?
A faulty BCM can cause a wide array of confusing symptoms. If you’re noticing any of the following, a Savana 3500 BCM replacement is likely the solution:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system light stays on or the alarm goes off randomly.
- ✔ The vehicle won’t start, but the battery and starter are good (anti-theft system engaged).
- ✔ Communication error codes stored, such as U0100, U0140, or other U-series codes.
- ✔ Dashboard warning lights (like the airbag light) illuminating for no reason.
- ✔ Wipers or radio operating intermittently or not at all.
A Straightforward Guide to BCM Installation
Replacing the BCM in your Savana is a manageable job for a DIYer or professional mechanic. It’s 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. In most Savana and Express vans, this is in the center dash area.
- 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 the replacement module in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Test and Verify: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to ensure everything is operating correctly. Address any post-installation procedures if needed (see below).
Important Post-Installation Information
Because your vehicle’s data is cloned to this module, most functions will work immediately. However, in some cases, specific security or safety systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
Always consult a factory service manual for your specific vehicle if you are unsure about any step.
Verified Fitment for a Wide Range of GM Vehicles
This BCM is a direct replacement for part number 15299986 and interchanges with numerous other part numbers, ensuring broad compatibility. While this is a perfect Savana 3500 BCM Replacement, it also fits the following vehicles. Please verify your original part number or consult with us if you are unsure.
Fits Models Including: ACADIA (07-12), AVALANCHE (10), CAPRICE (11-13), CAPTIVA SPORT (12), CTS (08-13), DTS (06-11), ENCLAVE (08-12), EQUINOX (07-09), ESCALADE / ESV / EXT (10), EXPRESS 1500/2500/3500 VANS (08-12), G8 (08-09), HUMMER H2 (08-09), IMPALA (06-13), LUCERNE (06-11), MONTE CARLO (06-07), OUTLOOK (07-10), SAVANA 1500/2500/3500 VANS (08-12), SRX (07-09), STS (10), SUBURBAN (10), TAHOE (10), TORRENT (07-09), TRAVERSE (09-12), VUE (08-10), YUKON / XL (10). (Note: Specific options and IDs may apply, check your original part).
Frequently Asked Questions
How does the Cloning Service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. Our technicians will extract the unique data from your module and flash it onto the replacement unit. This ensures all your vehicle’s options and security information are retained.
Do I need to send you my VIN?
Yes. Along with cloning your original module, we use your VIN to load the latest, most stable factory software from GM for your specific vehicle configuration. This ensures optimal performance.
Will I get my old BCM back?
Absolutely. Your original module is always returned to you along with the programmed replacement unit. We do not keep customer cores.
Is this difficult to install myself?
For someone with basic mechanical skills, it’s a very manageable job. The main challenge is accessing the module, which is usually behind the center dash. Since our Cloning Service handles the programming, the physical swap is all that’s required.
What if my airbag light comes on after installation?
This can happen occasionally as the new BCM needs to be electronically introduced to the airbag system (SDM). A simple ‘Setup SDM Primary Key in BCM’ relearn procedure with a professional scan tool will resolve this and turn off the light.