Is your 2008-2012 GMC Savana 2500 van plagued by bizarre electrical problems? Issues like flickering lights, malfunctioning power locks, or an intermittent no-start condition often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your van’s body electronics, and when it goes bad, it can create a host of frustrating and seemingly unrelated symptoms. This replacement Body Control Module, part number 25847588, is the definitive solution to restore your vehicle’s functionality and reliability.
Unlike a standard part from a local store, this BCM comes fully programmed to your specific vehicle. Before we ship, we use your van’s Vehicle Identification Number (VIN) to flash the module with the latest, most stable software updates directly from GM. This critical step ensures compatibility and saves you from a costly and time-consuming trip to the dealership for programming. The installation is streamlined, getting you back on the road faster.
From the Diagnostic Bay
We had a 2011 Savana 2500 work van come into the shop that was driving the owner crazy. The radio would turn on and off by itself, the dome lights would stay on, and sometimes the van just wouldn’t start, with no security light or obvious cause. The battery and alternator tested fine. After connecting a scan tool, we saw multiple ‘Loss of Communication’ codes with various modules. This immediately pointed us to the BCM. Once we installed a VIN-programmed module, every single electrical gremlin vanished. It’s a common failure point that can mimic many other problems.
Common Symptoms of a Failing Savana 2500 Body Control Module
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights) flickering, staying on, or failing to turn on.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ The radio or climate control system malfunctioning.
- ✔ Unexplained battery drain that occurs overnight.
- ✔ False warning messages appearing on the driver information center.
Installation and Post-Install Notes
While this module is programmed for your vehicle, some systems may require a ‘relearn’ or synchronization procedure after installation. This is a normal part of the process for many modern vehicles.
- Airbag System Sync: If the 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 new BCM with the airbag system.
- 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.
There is no core charge for this part. You can keep your original module.
Comprehensive Vehicle Fitment
This BCM is a direct replacement for part number 25847588 and is compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm fitment. It is known to fit the following models (and more):
- 2007-2012 Acadia
- 2010 Avalanche 1500
- 2011-2013 Caprice
- 2012 Captiva Sport
- 2008-2013 CTS
- 2006-2011 DTS
- 2008-2012 Enclave
- 2007-2009 Equinox
- 2010 Escalade, ESV, EXT
- 2008-2012 Express 1500/2500/3500 Van
- 2008-2009 G8
- 2008-2009 Hummer H2
- 2006-2013 Impala
- 2006-2011 Lucerne
- 2006-2007 Monte Carlo
- 2007-2010 Outlook
- 2008-2012 Savana 1500/2500/3500 Van
- 2007-2009 SRX
- 2010 STS
- 2010 Suburban 1500
- 2010 Tahoe
- 2007-2009 Torrent
- 2009-2012 Traverse
- 2008-2010 Vue
- 2010 Yukon & Yukon XL 1500
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your 17-digit VIN during or after checkout, and we will flash the module with the latest GM software for your specific vehicle.
Is this part difficult to install?
The physical replacement is typically straightforward, often located under the dash. However, as noted, some vehicles may require a ‘relearn’ procedure for systems like the airbags or brake sensor using a professional scan tool.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit serial number. You can find it on the driver’s side of the dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my van’s no-start problem?
If your no-start issue is caused by the anti-theft system being triggered by a faulty BCM, then yes, this part will resolve it. A failing BCM is a very common cause for intermittent no-start conditions on these vans.
What does ‘no core charge’ mean?
It means you do not have to send your old, faulty BCM back to us. The price you pay is the final price, with no additional deposit or return shipping required.
This BCM fits many vehicles. How do you know it will work for mine?
While the hardware is shared across many models, the software is unique. By programming the module with your specific VIN, we load the exact software your vehicle needs to operate correctly, ensuring perfect compatibility.