Are you battling bizarre and frustrating electrical issues in your GMC Savana or other GM vehicle? A faulty Body Control Module (BCM) is often the culprit. The BCM acts as the central command center for your vehicle’s body electronics, managing everything from power windows and door locks to interior lighting and the security system. When it fails, it can create a cascade of problems that are difficult to diagnose.
This is a direct replacement Body Control Module, part number 20864768, that arrives at your door fully programmed to your vehicle’s specific VIN. We flash it with the latest GM software updates, ensuring optimal performance and compatibility. This eliminates the need for an expensive trip to the dealership for programming, making the repair process faster and more affordable.
We had a 2011 Express work van come in that was driving the owner crazy. The dome lights would stay on, the driver’s side power window worked intermittently, and the horn would randomly go off when locking the doors with the remote. The owner had already replaced the window switch and checked fuses. After hooking up our scan tool, we saw multiple communication loss codes with the BCM. Instead of a dozen small problems, it was one central failure. Installing a VIN-programmed BCM like this one solved every single issue in under an hour.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on, flickering, or not working at all.
- ✔ The security system acting up or preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working when commanded.
- ✔ Dashboard warning lights appearing for seemingly unrelated systems.
- ✔ Inconsistent operation of the radio or climate controls.
Why Choose Our Programmed Savana 3500 Body Control Module?
Getting your van back on the road shouldn’t be a hassle. Our process is simple: after you place your order, you provide us with your vehicle’s VIN. Our technicians then program the module to match your vehicle’s exact configuration and options. This makes installation a true plug-and-play process. While the core installation is straightforward, some vehicles may require a simple relearn procedure for certain systems after the new BCM is connected.
Post-Installation Procedures
In some cases, additional steps may be needed to sync the new module with other systems in your vehicle. These can typically be performed with a high-end bidirectional scan tool.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor might be required to ensure correct brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Fitment
This module is a direct replacement for a wide range of original equipment part numbers, including: 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, and 95151084. It fits an extensive list of GM vehicles; please verify your part number or consult the compatibility list to ensure proper fitment.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors most of the non-engine related electronic functions, such as lights, windows, security, door locks, and wipers.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information.
Is this part difficult to install?
The physical replacement is typically straightforward, involving unplugging the old module and plugging in the new one. However, its location varies by model (e.g., under the dash, behind the glove box). The main benefit here is that no computer programming is required on your end.
What if my original part number is not 20864768?
This module replaces many different part numbers. Please check the extensive list in the description. As long as your original part number is on that list, this module will work for your vehicle.
Will this fix my ‘Service Airbag’ light?
If the BCM is the cause of the light, yes. However, after installation, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems and clear the light, as mentioned in the description.
Is there a core charge?
No, there is no core charge for this part. You can keep your original module.