Restore Your Van’s Electrical System with a VIN-Programmed BCM
If your 2008-2012 Savana 3500 is experiencing bizarre electrical issues like flickering lights, malfunctioning gauges, or power windows with a mind of their own, a failing Body Control Module (BCM) is the most likely culprit. As the central hub for your van’s body electronics, a faulty BCM can cause a cascade of frustrating problems, leading to costly downtime and diagnostic headaches. This is a direct-fit replacement BCM, delivered to your door already programmed with the latest GM software for your specific vehicle. Simply provide your VIN at checkout, and we handle the complex programming, saving you a trip to the dealership.
A Technician’s Notebook: The Work Van That Wouldn’t Cooperate
I had a local plumbing contractor bring in his 2011 Savana 3500. His complaint was a classic ‘ghost in the machine’ scenario. The dome lights would stay on, the radio would cut out, and sometimes the power door locks wouldn’t respond. He’d already replaced the battery and checked fuses, but the problems were intermittent and maddening. A scan revealed multiple communication loss codes (U-codes) pointing to the BCM. Instead of a lengthy and expensive dealer visit, we ordered a pre-programmed BCM. The swap took less than an hour, and his van was back to being a reliable workhorse. This pre-programming service is a game-changer for professionals who can’t afford to have their vehicle tied up in a service bay.
Diagnosing a Faulty BCM in Your Savana Van
A failing BCM can mimic other problems, but there are tell-tale signs. For a work vehicle like the Savana, these issues can directly impact your productivity. If you’re a professional mechanic or a hands-on fleet owner, identifying a bad BCM quickly is key. This replacement 2008-2012 Savana 3500 BCM is the definitive solution for these perplexing electrical failures, restoring full functionality and reliability to your vehicle’s essential systems.
Common Symptoms of BCM Failure
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome lights, turn signals).
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ The security or anti-theft light staying on, causing a no-start condition.
- ✔ The radio or infotainment system randomly shutting off.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or U0164.
Your Straightforward Guide to BCM Installation
Replacing the BCM in your Savana is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most difficult step. Remember to always work safely.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
- Locate the BCM: In most 2008-2012 Savana vans, the BCM is located behind the center dash panel. You may need to remove trim pieces to gain access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test and Verify: Turn the ignition on and test all body functions—lights, locks, windows, radio, and wipers—to confirm the repair was successful.
Important Post-Installation Notes
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new BCM. In some cases, you may need a professional scan tool to perform a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light illuminates, or a ‘Brake Pedal Position Relearn’ for the traction control system. These are not always required but are important to be aware of. Always consult a factory service manual for your specific model if you are unsure.
Guaranteed Vehicle Compatibility
This Body Control Module is a direct replacement for part number 20815898 and is compatible with a wide range of GM vehicles. We guarantee fitment for your 2008-2012 Savana 3500 BCM. It also fits the following models and part numbers:
Compatible 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
Select Vehicle Fitment: GMC Savana (1500, 2500, 3500), Chevrolet Express (1500, 2500, 3500), Chevrolet (Tahoe, Suburban, Impala, Traverse, Avalanche), Cadillac (CTS, DTS, Escalade), GMC (Acadia, Yukon), Buick (Enclave, Lucerne), and many more from 2006-2013. Please verify your part number before ordering.
Frequently Asked Questions
Do I need to do any programming after I receive this BCM?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready to be installed, saving you from expensive dealer programming fees.
What is a core charge?
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this BCM, so you can keep your original module.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
What happens if my airbag light is on after installation?
This can occasionally happen. It means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A technician with a professional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Is this a difficult part for a DIYer to replace?
For someone with basic mechanical skills, it’s a very manageable job. The most significant benefit is that our pre-programming service removes the need for specialized computer equipment, which is the hardest part of the process.