Are you battling frustrating electrical gremlins in your GMC Savana or other GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s electronic accessories, and when it fails, it can cause a wide array of confusing and intermittent problems. This replacement Body Control Module, part number 20864768, is the definitive solution to restore your vehicle’s functionality and peace of mind.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from the dashboard gauges or warning lights (including security light).
- ✔ Headlights, taillights, or interior lights staying on or not turning on at all.
- ✔ Problems with the keyless entry or remote start system.
- ✔ Unexplained battery drain that kills your battery overnight.
- ✔ Vehicle failing to start, even with a good battery and starter.
- ✔ Horn honking unexpectedly or not working when pressed.
Why Choose Our Programmed Savana 2500 Body Control Module?
Getting your van back on the road shouldn’t be complicated. Dealerships often require you to have your vehicle towed in for BCM replacement, leading to high labor costs and vehicle downtime. Our solution is simple: we send you a replacement Savana 2500 Body Control Module that is pre-programmed specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest GM software updates that match your vehicle’s exact configuration. This makes installation a direct, plug-and-play process, eliminating the need for expensive dealer-only programming tools.
Installation and Post-Install Procedures
This module is designed for a direct fit. Once installed, most vehicles will be ready to go. However, on some models, a few simple relearn procedures may be necessary to ensure all systems communicate correctly. These do not always require a high-end scan tool but are important to be aware of:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed to sync the new BCM with the airbag system. This is often required for safety compliance.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be necessary.
Please note: This module is a direct replacement for a wide range of GM part numbers. Verify your original part number against the extensive list provided to ensure compatibility.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer in your vehicle that manages and controls many of its non-engine related electronic functions. This includes power windows, locks, lights, wipers, security system, and more. It acts as a hub for these systems.
Is this BCM difficult to install?
For someone with moderate mechanical skill, the physical replacement is straightforward. The BCM is typically located under the dashboard. Because we pre-program the module to your VIN, you avoid the most difficult step, which is the software flashing.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to work in your vehicle.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
What if my airbag light is on after I install the new BCM?
This is a normal possibility. The new BCM needs to be electronically introduced to the airbag’s computer (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ will need to be performed with a professional diagnostic tool to resolve this.
Will this part fit vehicles other than the Savana 2500?
Yes. This BCM is compatible with a wide variety of GM vehicles, including the Express Van, Tahoe, Suburban, Impala, Acadia, and more. Please check the detailed fitment list and cross-reference your original part number to confirm compatibility.