Restore Your GM’s Electrical System with a Reliable, Programmed BCM
Are you chasing electrical gremlins in your car, truck, or van? Flickering lights, power windows with a mind of their own, or a security light that prevents your vehicle from starting are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it falters, it can cause a cascade of frustrating and seemingly unrelated issues. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
Instead of paying steep dealership prices for a new module and separate programming fees, get a dependable solution that arrives ready for installation. We take the guesswork and extra cost out of the equation. Simply provide your vehicle’s VIN after purchase, and our experts will program this GM Body Control Module with the latest factory software specific to your vehicle. This ensures seamless integration and restores full functionality, just like the original.
A Technician’s Notebook: The 2011 Impala Mystery
I remember a 2011 Chevy Impala that came into the shop with a laundry list of bizarre complaints from the owner. The radio would turn on and off, the driver’s side power window wouldn’t work, and occasionally, the car wouldn’t start, flashing the security light. The customer had already replaced the battery and checked fuses. After hooking up my scan tool, I saw a slew of communication error codes (U-codes) pointing to a network problem. In my 20+ years of experience, this pattern almost always leads back to the BCM. It’s the traffic cop for all the electronic modules, and when it fails, chaos ensues. We installed a VIN-programmed BCM, and every single issue was resolved instantly. It’s a fix I’ve performed hundreds of times on these GM platforms.
Common Symptoms of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. Replacing your GM Body Control Module can be the definitive solution.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft light stays on, often causing a no-start condition.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminate for no reason.
- ✔ Problems with the radio, climate control, or keyless entry remote.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or other U-codes.
- ✔ Horn honking unexpectedly or not working at all.
Your Straightforward Installation Guide
This module is designed for a direct-fit replacement. While the BCM location varies by model (check your service manual), the process is generally consistent.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most of these vehicles, the BCM is located under the driver’s side dashboard, to the left of the steering column, or in the center dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a click as they lock into place.
- Reconnect Power: Reattach the negative battery terminal. Your vehicle’s core body functions should now be restored.
Important Post-Installation Information
Because this GM Body Control Module comes pre-programmed to your VIN, it is largely a plug-and-play repair. However, depending on your specific vehicle, a couple of simple relearn procedures may be required to sync other vehicle systems.
- ✔ Airbag System Sync: If your airbag (SRS) light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional bi-directional scan tool to sync the modules and clear the light.
- ✔ Brake Pedal Position Relearn: Some models may require this recalibration to ensure the brake lights and traction control system function correctly. This can also be performed with a capable scan tool.
- ✔ No Core Charge: You are not required to return your old module. This saves you time and the hassle of a core deposit.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Will This Fit My Vehicle?
This module is a direct replacement for a wide range of General Motors vehicles and supersedes multiple part numbers. Please verify your vehicle is on the list below. This part replaces the following 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
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We need this to program the module correctly before shipping.
Is this part really plug-and-play?
For most vehicles, yes. Because we program it to your VIN, it will control the main functions right out of the box. However, as noted, some vehicles may require a simple airbag or brake sensor relearn procedure with a scan tool for full system integration.
Do I have to return my old BCM?
No. There is absolutely no core charge or need to send your original part back to us. You can keep it or dispose of it at your convenience.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system errors and no-start conditions. While other issues can cause this message, replacing a bad BCM often resolves the problem completely.
What tools are needed for the post-install procedures?
The Airbag System Sync and Brake Pedal Position Relearn must be done with a professional-grade bi-directional scan tool. Many local repair shops can perform these quick procedures for you if needed.