Is Your Savana Van Acting Possessed?
If you’re dealing with flickering lights, power windows and locks with a mind of their own, or random warning messages on your dash, you’re not alone. As a technician with over 20 years of experience, I’ve seen these exact issues countless times in work vans. The culprit is almost always a failing Body Control Module (BCM). This isn’t just an annoyance; a faulty BCM can compromise your vehicle’s security and safety systems. It’s the central hub for all your van’s comfort and convenience electronics, and when it goes, it can cause a cascade of frustrating problems.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a reliable BCM and flash it with the very latest GM software, specifically programmed to your van’s unique Vehicle Identification Number (VIN). This means you get a component that communicates flawlessly with your vehicle’s other systems, right out of the box. You skip the expensive trip to the dealership for programming and get your workhorse back on the road faster.
A Technician’s Notebook: The Case of the Intermittent Express Van
A local contractor brought in his Express van—a sibling to the Savana—with a problem that was costing him business. Some days the interior lights wouldn’t turn off, draining the battery overnight. Other days, the power door locks wouldn’t respond. He’d already replaced the battery and checked fuses. After hooking up my pro-level scan tool, I saw multiple ‘Loss of Communication’ codes (U-codes) pointing to the BCM. These modules, often located in the center dash, are susceptible to heat cycles and vibrations over thousands of miles. The internal solder joints can develop micro-fractures, leading to the exact kind of intermittent, maddening issues he was facing. Installing a VIN-programmed BCM restored all functions perfectly and got him back to his job site without worry.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely cause. Replacing it with our pre-programmed unit is the definitive fix.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not working.
- ✔ The security system acting up, or the horn honking randomly.
- ✔ False warning lights on the instrument cluster (e.g., “Service Theft System”).
- ✔ Communication error codes, particularly U-codes like U0140, when scanned.
- ✔ Inability of a scan tool to communicate with the body control module.
A Straightforward Guide to Your BCM Installation
Replacing the Savana 1500 Body Control Module is a manageable job for a DIYer with basic tools. The BCM is typically located in the center dash area. Follow these general steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: You will need to remove trim panels around the center dash or glove box area to gain access to the BCM. Keep track of your screws and clips.
- Identify the BCM: Locate the old module. It will be a plastic box with several large electrical connectors attached. Take a photo before you unplug anything to help with reassembly.
- Swap the Modules: Carefully disconnect all electrical connectors from the old BCM. Unbolt it from its mounting bracket and set it aside. Mount your new, pre-programmed module in its place.
- Reconnect Everything: Firmly plug all the electrical connectors into your new BCM. Reassemble the dash panels in the reverse order you removed them.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all functions: power locks, windows, lights, and wipers.
Important Post-Installation Steps
Because this Savana 1500 Body Control Module is new to your vehicle’s network, a couple of quick relearn procedures may be necessary. This is normal and ensures all safety systems are correctly synchronized.
- ✔ 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 required to ensure proper brake light and traction control operation. This also requires a compatible scan tool.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and is guaranteed to function correctly when we program it to your VIN. It replaces part numbers including 15921352, 25892622, 20815898, and many more.
ACADIA 07-12
AVALANCHE 1500 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 VAN 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 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON / YUKON XL 1500 10
Note: Specific options and IDs may apply. Please verify your part number or contact us with your VIN.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No! That’s the best part. We program the module to your vehicle’s specific VIN before we ship it to you. It arrives ready for installation, saving you time and money.
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship the module until we receive this information for programming.
Is there a core charge or do I need to return my old part?
There is absolutely no core charge. You can keep your old BCM, so your van is never out of commission while waiting for a part.
What tools are required for the installation?
Basic hand tools like a socket set, screwdrivers, and trim removal tools are usually all that’s needed for the physical installation. However, as noted, a professional-grade bidirectional scan tool may be required for post-installation relearn procedures like the airbag or brake pedal position sync.
Will this fix my specific electrical problem?
This module corrects issues directly caused by a failing BCM, such as problems with power accessories, lighting, and security systems. While it is a very common point of failure, you should always ensure your vehicle has been properly diagnosed. This part will resolve any issues originating from the BCM itself.
What if my original part number isn’t 15921352?
This module is a direct replacement for a long list of interchangeable GM part numbers. Please check the fitment list on this page. If your number is on the list, this module will work perfectly once programmed to your VIN.