Restore Your Van’s Electrical System with a Plug-and-Play BCM
If your 2008-2012 Savana 1500 Van is acting possessedâwith flickering dash lights, malfunctioning power locks, or a security system that prevents it from startingâyou’re likely dealing with a failed Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. This isn’t just an inconvenience; for a work van, it’s downtime that costs you money. We offer a reliable, straightforward solution: a replacement BCM, part number 20815898, that arrives at your door fully programmed for your specific vehicle.
From the Diagnostic Bay: The Case of the Haunted Work Van
I remember a fleet customer bringing in a 2010 Savana 2500. The complaint was ‘it just won’t start sometimes, and the radio does weird things.’ The driver had already replaced the battery. A quick scan showed a slew of U-codes, specifically U0140 (Lost Communication With Body Control Module). The tell-tale sign was that the power door locks only worked intermittently. Instead of hours of chasing wires, we went straight for the BCM. A faulty internal relay was the culprit. Swapping in a pre-programmed module like this one had the van back in service the same afternoon, saving the client hundreds in diagnostic labor and dealership programming fees.
Is Your Savana Showing These Symptoms?
A failing BCM is often misdiagnosed. Over my 20+ years in the field, I’ve seen these modules cause a wide range of problems. Check if your van is experiencing any of the following:
- â Power windows or door locks not working or operating erratically.
- â The anti-theft or security light stays on, causing a no-start condition.
- â Instrument cluster gauges behaving strangely or not working at all.
- â Interior or exterior lights flickering, staying on, or not turning on.
- â Communication error codes, such as U0140, U0155, or other ‘U’ codes.
- â Key fobs are no longer recognized by the vehicle.
A Straightforward Guide to BCM Installation
Replacing the 2008-2012 Savana BCM is a manageable job for a DIYer or professional. The key is our VIN-programming service, which eliminates the need for expensive dealer tools. Just provide your VIN at checkout, and we handle the rest.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the Savana and Express vans, the BCM is typically located in the center dash area, often accessible by removing the lower dash panels or glove box.
- 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 module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functionsâwindows, locks, lights, and wipersâto ensure proper operation.
Important Post-Installation Notes
While our BCM is programmed for your van, some vehicle systems may require a ‘handshake’ with the new module. In some cases, you may need a professional scan tool to perform a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ (Setup SDM Primary Key in BCM) if related warning lights appear after installation. This is standard for many modern vehicle repairs. And remember, there’s no core charge, so you can keep your old part.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 20815898 and other interchangeable numbers. It is guaranteed to fit the following models, among others:
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-12 Body Control (BCM)
SAVANA 3500 VAN 08-12 Body Control (BCM)
EXPRESS 3500 VAN 08-12 Body Control (BCM)
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
ENCLAVE 08-12 Body Control (BCM); (LH dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
IMPALA 06-12 Body Control (BCM); (LH dash)
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
…and many more. Please verify your part number from the list provided.
Frequently Asked Questions
Do I need to program this BCM?
No. We pre-program the module to your vehicle’s VIN before shipping. This saves you a trip to the dealership and associated fees. It’s ready to install right out of the box.
Where is the BCM located on my 2008-2012 Savana Van?
The BCM is typically found behind the center part of the dashboard. You may need to remove lower dash panels or the glove box assembly to access it.
Will this fix my ‘Service Theft System’ light?
In many cases, yes. The BCM is integral to the Pass-Key/Passlock anti-theft system. A failing BCM is a very common cause of security system faults and no-start conditions related to it.
What if my airbag light is on after I install it?
If the airbag light appears, the new BCM needs to be synced with the airbag’s computer (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a quick process for any qualified mechanic.
What is a VIN and why do you need it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your van. We use it to load the exact factory software and settings your vehicle had when it was built, ensuring perfect compatibility and function.