Restore Full Functionality to Your GM Van with a Hassle-Free BCM Solution
If your 2008-2012 Savana 3500 Van is plagued by baffling electrical problems—like power windows with a mind of their own, erratic door locks, flickering interior lights, or a security light that prevents the engine from starting—a failing Body Control Module (BCM) is the likely culprit. The BCM is the central command center for your vehicle’s body electronics. When it fails, it can create a cascade of frustrating and unpredictable issues. Don’t let these problems sideline your workhorse van. This is a reliable, direct-fit replacement BCM, delivered with our expert cloning service to make your repair as simple as possible.
We take the complexity out of the equation. Instead of you needing to pay for expensive dealership programming and diagnostics, we handle the critical software transfer before we ship the part. Just send us your original BCM, and we will professionally clone all the essential data—including your vehicle’s specific VIN, security information, and option content—onto this replacement unit. The result is a true plug-and-play module. You get your van back to perfect working order without the need for specialized tools or a trip to the dealer. This is the smart, efficient fix for both professional mechanics and dedicated DIYers.
Case Study: A Tricky Diagnosis
I remember a 2011 Express 3500 that came into my shop from a local delivery company. The driver reported the radio would turn on and off randomly, and the power door locks wouldn’t respond to the key fob. They had already replaced the battery and checked the fuses. We scanned it and found a U0140 code—Lost Communication With Body Control Module. Instead of sending them to the dealer, which would have meant days of downtime for their business, we used our cloning service. We pulled their original BCM, cloned it to a replacement unit overnight, and had it installed the next morning. The van was back on its route in less than 24 hours, with all electrical functions restored. This service is a game-changer for keeping commercial vehicles on the road.
Is Your Van Exhibiting These BCM Failure Signs?
A faulty BCM can manifest in numerous ways. Here are some of the most common issues I’ve seen in my 20+ years of experience:
- ✔ Inconsistent or non-working power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not turning on at all.
- ✔ The security or anti-theft system light is illuminated, causing a no-start condition.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140, B1001, or other communication errors stored in the system.
- ✔ Wipers operating erratically or not parking in the correct position.
Your Straightforward BCM Swap Guide
Installing your cloned BCM is a manageable job for a DIYer with basic tools. For the Savana/Express vans, the BCM is typically located behind the center dash trim.
- 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: Carefully remove the dash panels necessary to access the BCM. On these vans, it’s usually near the center console area, often mounted to a bracket.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Then, unbolt the module from its mounting location.
- Install the New BCM: Mount your new, cloned BCM in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
- Post-Installation Checks: Reconnect the battery terminal. Start the vehicle and test all body functions: lights, locks, windows, radio, and wipers. Address any post-install relearn procedures if necessary (see below).
Important Information After Installation
Our cloning service makes this repair nearly seamless, but some GM vehicles may require a simple relearn procedure to ensure all systems communicate correctly after the new BCM is installed.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool to sync the modules and clear the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary for correct brake light and traction control operation.
Disclaimer: Procedures can vary slightly by exact model and year. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Compatibility for Your GM Vehicle
This BCM is a direct replacement for part number 15880684 and is interchangeable with a wide range of other part numbers. It fits numerous GM cars, trucks, and SUVs. Please verify your part number or consult the list below. This module fits:
This module also replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
What is a ‘Cloning Service?’
Cloning is a process where we transfer the exact software and vehicle-specific data (like the VIN and security keys) from your original BCM to this replacement unit. This makes the new module plug-and-play, eliminating the need for expensive dealer programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. After you purchase, we will provide instructions on where to send it. We’ll clone it and ship both your original and the newly prepared replacement back to you.
Is this BCM difficult to install?
For someone with basic mechanical skills, the physical swap is straightforward. The main challenge with BCM replacement is typically the programming, which our cloning service completely handles for you.
What happens to my old BCM?
We always return your original module along with the programmed replacement unit. We do not keep your old part.
Will I need a special tool after installation?
In most cases, no special tools are needed. However, as noted, some vehicles may trigger an airbag light that requires a professional scan tool to perform the ‘SDM Key Setup’ to clear it. This is a simple procedure for any qualified mechanic.