Is Your GM Vehicle Acting Possessed?
If you’re dealing with a frustrating array of electrical gremlins in your Chevy Express, GMC Savana, or other compatible GM vehicle, a failing Body Control Module (BCM) is the likely culprit. The 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 starts to fail, it can cause bizarre and unpredictable behavior that can be difficult to diagnose.
From the Diagnostic Bay
We had a 2011 Express 1500 work van come into the shop that was driving the owner crazy. The dome lights would flicker randomly, the power locks would work one minute and not the next, and occasionally the van wouldn’t start, showing a security light on the dash. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication errors pointing towards the BCM. Replacing it with a VIN-programmed unit like this one solved every single issue instantly. It’s a common failure point that can mimic a dozen other problems.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ The security or anti-theft system light is on, preventing the engine from starting.
- ✔ Dashboard warning lights appearing and disappearing without reason.
- ✔ Horn sounding unexpectedly or not working at all.
- ✔ Problems with the radio or climate control functions.
A True Plug-and-Play Express 1500 Body Control Module Solution
Forget expensive trips to the dealership for diagnostics and programming. This Body Control Module is the straightforward solution you need. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before it ships. This ensures that it communicates perfectly with your vehicle’s existing systems right out of the box. We load the latest software updates from GM, so you’re not just replacing the part, you’re getting the most current logic for your vehicle’s electronics. Simply provide your VIN after purchase, and we’ll handle the rest.
Important Post-Installation Information
While this module is designed for a simple installation, some vehicles may require additional steps to synchronize all systems. These are known as ‘relearn’ procedures.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure the brake lights and traction control system function correctly.
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 that your original module’s part number is on this list to ensure compatibility.
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
What does the Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s electronic accessories. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more.
Do I need to have this module programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it to you. This makes the installation process much simpler and saves you from paying expensive dealership programming fees.
How do I provide my VIN?
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.
What if the airbag light comes on after I install the BCM?
This can happen on some vehicles. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a professional-grade scan tool to resolve this.
Is this part difficult to replace?
The difficulty varies by model. On many GM vans and trucks, the BCM is located in the center dash or under the steering column and is accessible with basic hand tools. The key benefit of our product is that the difficult programming step is already done for you.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module.