Restore Full Electrical Function to Your GM Vehicle
Is your Chevrolet Express or GMC Savana van plagued by bizarre electrical problems? Issues like flickering lights, malfunctioning power windows, erratic dashboard warnings, or a no-start condition often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and difficult-to-diagnose symptoms. This replacement module is the definitive solution to get your workhorse van or family vehicle back in reliable, working order.
Diagnosing a Faulty Express 2500 Body Control Module
A failing BCM doesn’t always trigger a check engine light, making diagnosis tricky. If you’re experiencing several of the following issues, a faulty BCM is the likely cause. This unit is designed to resolve these exact problems, restoring your vehicle’s factory functions without a trip to the dealership for programming.
Common Symptoms of BCM Failure
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ Security system acting up or preventing the vehicle from starting.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating for no reason.
- ✔ Radio or climate control systems behaving erratically or not turning on.
- ✔ Unexplained battery drain that kills the battery overnight (parasitic draw).
- ✔ Horn honking randomly or not working at all.
- ✔ Inconsistent or non-functional remote keyless entry.
Plug-and-Play Solution
The biggest hurdle in replacing a BCM is the need for expensive, dealer-specific programming. We eliminate that step. Simply provide your vehicle’s 17-digit VIN during checkout, and our technicians will program this module with the latest GM software specific to your vehicle’s configuration. This ensures it communicates perfectly with your vehicle’s other computers right out of the box. While the core programming is done, some simple, on-vehicle relearn procedures may be necessary after installation for systems like the airbags or brake pedal position sensor, as detailed in our post-installation guide.
This module is a direct replacement for a wide range of GM 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. Please verify your part number and check the extensive fitment list to ensure compatibility.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes, the module comes pre-programmed to your vehicle’s VIN, which handles the most critical setup. However, depending on your specific model, you may need to perform a simple ‘relearn’ procedure for the airbag system or brake pedal sensor, which sometimes requires a diagnostic tool.
How do I provide my VIN?
You can add your 17-digit VIN to the notes section during checkout. If you forget, we will contact you via email after your purchase to request it. We cannot ship the module until it has been programmed.
What happens if the airbag light is on after installation?
This indicates the BCM needs to be synced with the airbag’s Supplemental Deployment Module (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a professional-grade scan tool to resolve this.
Will this fix my vehicle’s parasitic battery drain?
If the battery drain is caused by a faulty BCM that is not allowing the vehicle’s electronic systems to go to sleep, then yes, this part is the correct fix for that issue.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Where is the BCM located on my Express or Savana Van?
On most Express and Savana vans from this era, the BCM is located in the center dash area. Always consult a service manual for your specific vehicle to confirm the location and proper removal procedure.