Is your 2008-2012 GMC Savana 3500 experiencing bizarre electrical problems? Flickering lights, unresponsive power windows and locks, or random warning indicators on the dash are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your van’s body electronics, and when it malfunctions, it can cause a cascade of frustrating and seemingly unrelated issues. Get your workhorse van back in reliable condition with our pre-programmed, direct-fit replacement BCM.
This isn’t just a generic part off the shelf. We take the guesswork and expensive dealership trips out of the equation. Upon purchase, you simply provide us with your vehicle’s VIN. Our technicians will then flash the module with the latest official GM software specific to your Savana’s configuration. This ensures that when the module arrives, it’s a true plug-and-play solution, ready to restore full functionality to your vehicle’s systems without the need for additional programming fees.
We had a contractor come in with his ’11 Savana 3500. His complaint was a mess: the dome lights would stay on, the driver’s side power window worked intermittently, and the horn would randomly go off when he used the turn signal. He’d already replaced the window switch and a few fuses with no luck. After hooking up the scanner, we saw a flood of communication error codes all pointing back to one source. The BCM was failing internally, corrupting data and sending faulty commands. We installed a VIN-programmed BCM, and instantly, all the ghost-in-the-machine problems vanished. It’s a perfect example of how one single module can control so many different functions.
Symptoms of a Failing 2008-2012 Savana 3500 BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, brake lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ Vehicle security system acting up, such as the alarm sounding for no reason.
- ✔ Intermittent operation of the radio, climate controls, or instrument cluster gauges.
- ✔ False warning lights appearing on the dashboard (e.g., ABS, Airbag, Traction Control).
- ✔ Key fob failing to lock or unlock the doors.
- ✔ Excessive battery drain when the vehicle is turned off.
Simple Installation and Post-Install Notes
Replacing the BCM is a straightforward process for a knowledgeable DIYer or any professional technician. After the physical installation, some vehicles may require simple relearn procedures to ensure all systems communicate correctly. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade diagnostic tool. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control functionality.
This single module is a direct replacement for a wide range of original GM part numbers, ensuring broad compatibility. The key is our VIN-specific programming, which makes it the exact correct part for your van. This part replaces the following 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.
Frequently Asked Questions
What does the Body Control Module (BCM) do on my Savana van?
The BCM acts as the central computer for your van’s body-related electronic accessories. It controls functions like power windows, power locks, interior and exterior lighting, the security system, keyless entry, and more. When it fails, these systems can behave erratically.
Is this module difficult to install?
The physical installation is generally straightforward. It’s typically located in the center dash area. The main benefit of our product is that it arrives pre-programmed to your VIN, eliminating the most complex step. However, some post-installation relearn procedures, like for the airbag or brake systems, may require a diagnostic scan tool.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.
What happens if I forget to provide my VIN?
Providing your Vehicle Identification Number (VIN) is a mandatory step in the ordering process. We cannot program and ship your BCM without it, as the software is specific to your van’s exact features and configuration. This ensures a proper, hassle-free installation.
Will this BCM fit other GM vehicles besides the Savana?
Yes, the hardware for this BCM is used across a wide variety of GM trucks, vans, and SUVs from this era. However, the software programming is unique to each model and its specific options. By programming it to your Savana 3500’s VIN, we ensure it functions exactly as the original did.