Restore Your Vehicle’s Electrical System with a Plug-and-Play BCM
Are you battling bizarre electrical issues in your GM vehicle? Flickering dash lights, power windows with a mind of their own, or a security system that prevents you from starting your car are classic signs of a failing Body Control Module (BCM). It’s the electronic nerve center for your vehicle’s comfort and convenience features, and when it goes bad, it can be incredibly frustrating. This isn’t just an inconvenience; it can affect vehicle security and safety systems. Forget the expensive dealership visit and the hassle of finding a shop to program a new module. We provide a reliable, cost-effective solution: a high-quality GM Body Control Module, professionally programmed with the latest GM software updates specifically for your vehicle’s VIN.
A Technician’s Notebook: The 2011 Impala That Wouldn’t Cooperate
A 2011 Impala came into my bay with a list of complaints that seemed unrelated. The radio would turn on and off randomly, the driver’s side power window worked intermittently, and the remote keyless entry was dead. The owner had already replaced the battery and checked all the fuses. A quick scan revealed a slew of U-codes (communication errors) pointing to the BCM. These modules are notorious for internal solder joint failures or water intrusion damage. Instead of a costly diagnostic rabbit hole, we installed one of our VIN-programmed BCMs. In under an hour, all the strange electrical gremlins were gone. This is a repair I’ve done hundreds of times, and it consistently brings vehicles back to life.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. This part is the central hub for many electronic functions, and its failure can cause a chain reaction of problems.
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft system light is on, and the vehicle may not start.
- ✔ Dashboard warning lights (like ABS or Airbag) illuminate for no reason.
- ✔ Horn sounds unexpectedly or doesn’t work at all.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Wipers or radio operating incorrectly.
A Straightforward Guide to Installation
Replacing your GM Body Control Module is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most difficult step, saving you time and money.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: The location varies by model (see fitment list below). It’s typically found under the driver’s or passenger’s side of the dashboard, or behind the center console.
- Remove Trim Panels: You may need to remove plastic trim panels to access the module. Be gentle with clips and use a trim removal tool if possible.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed BCM into place. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect Battery: Re-attach the negative battery terminal. Your vehicle is now ready for the final steps.
Important Post-Installation Steps
After installation, your vehicle may require one or more relearn procedures for full functionality. This is a normal part of replacing a major electronic module.
- Airbag System Sync: If your airbag warning light is on after installation, a “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure brake lights and traction control function correctly. This can often be done with a high-end scan tool.
- No Core Charge: You can keep your old BCM. There is no core charge or need to return your original part.
Disclaimer: Procedures can vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This GM Body Control Module is a direct replacement for a wide range of vehicles and part numbers. Please verify your vehicle and part number from the list below. This module 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
Frequently Asked Questions
What do you mean by ‘programmed to my VIN’?
Before we ship your BCM, our technicians use your Vehicle Identification Number (VIN) to load the exact, vehicle-specific software and settings from GM. This ensures the module communicates correctly with all other systems in your car, making installation as simple as possible.
Is this really a plug-and-play installation?
For the most part, yes. The physical installation is plug-and-play. Because we pre-program it, you avoid the need for dealer-level programming tools. However, as noted, some vehicles may require simple relearn procedures for systems like the airbags or brake sensor after installation.
What happens after I place my order?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. You can typically add this in the notes at checkout or reply to your order confirmation email. We cannot program and ship the module without it.
Why is my airbag light on after installing the new BCM?
This is a normal security measure in GM vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). This is done with a ‘Setup SDM Primary Key’ procedure using a professional scan tool and resolves the light.
Do I need to send my old BCM back?
No. We do not require you to return your original module. There is no core charge associated with this purchase.
Will this fix my ‘Service StabiliTrak’ message?
It can. The BCM communicates with the traction control and StabiliTrak systems. If the BCM is failing and causing communication issues, replacing it can resolve those warnings, though a Brake Pedal Position Relearn may be needed.