Restore Full Functionality to Your GM Vehicle’s Electronics
Is your Chevrolet Express, GMC Savana, or other compatible GM vehicle suffering from strange and unpredictable electrical issues? The Body Control Module (BCM) is the central command center for your vehicle’s body electronics, managing everything from power windows and locks to interior lighting and the security system. When it fails, it can cause a cascade of frustrating problems that can be difficult to diagnose. This replacement BCM, part number 20815898, is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
Is a Failing BCM the Source of Your Problems?
A failing BCM doesn’t always trigger a check engine light, making it a tricky component to diagnose. If you’re experiencing any of the following symptoms, a faulty BCM is a likely culprit:
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 or keyless entry malfunctioning or acting erratically.
- ✔ The horn sounding unexpectedly or not working when pressed.
- ✔ Wipers operating intermittently or at the wrong speed.
- ✔ Instrument cluster gauges behaving erratically or displaying incorrect information.
- ✔ A persistent parasitic battery drain that kills your battery overnight.
The Plug-and-Play Solution: A Programmed Express 2500 Body Control Module
Don’t waste time and money at the dealership. We simplify the repair process. This module is not just a replacement part; it’s a complete solution. When you order, simply provide us with your vehicle’s VIN. Our technicians will then program the BCM with the latest GM factory software specific to your vehicle’s configuration. This ensures that when the part arrives, it’s ready for installation, saving you a trip to the dealer for expensive programming.
Post-Installation Information
While our programming handles the heavy lifting, some vehicles may require simple relearn procedures after installation to ensure all systems communicate correctly. These are typically straightforward and can sometimes be performed without special tools.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool will be needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with your vehicle’s existing airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may 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 BCM is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your part number or vehicle in the list below.
Replaces Part 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
Do I need to get this BCM programmed by a dealer?
No. We handle the programming for you before shipment. Simply provide your vehicle’s 17-digit VIN during or after checkout, and the module will arrive ready to be installed.
Is this a plug-and-play installation?
For most vehicles, yes. Our VIN programming makes it a direct installation. However, as noted above, some models may require an additional relearn procedure for the airbag system or brake pedal position sensor.
What happens if my airbag light turns on after I install it?
This indicates the new BCM needs to be synced with the existing Supplemental Inflatable Restraint (SIR) system. A procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool to resolve this.
Is there a core charge for my old BCM?
No, there is no core charge. You can keep your original module without needing to send it back.
How do I know this will fix my vehicle’s problem?
This part corrects issues caused by a faulty BCM. While the symptoms listed are very common for BCM failure, we always recommend having a qualified mechanic perform a proper diagnosis to confirm the BCM is the root cause before ordering.