Restore Your Vehicle’s Electrical System with a Reliable BCM
Are you battling frustrating electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows or locks, a persistent battery drain, or a car that refuses to start can often be traced back to a single culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s comfort and security features, a faulty BCM can create a cascade of baffling issues. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability. Stop chasing symptoms and address the root cause with a dependable replacement.
This isn’t just a generic part off a shelf. We provide a fully programmed BCM, flashed with the latest GM software updates specifically for your vehicle’s VIN. This critical step ensures seamless integration and proper function of all related systems, a service that would otherwise require an expensive trip to the dealership and specialized programming tools. By providing us with your VIN at checkout, you receive a part that is truly ready for installation, saving you time, money, and diagnostic headaches.
From the Diagnostic Bay: The Case of the Haunted Express Van
I remember a 2011 Chevy Express 2500 that came into my shop with a classic BCM failure story. The owner, a local contractor, was at his wit’s end. His interior lights would flicker randomly, the radio would sometimes refuse to turn off, and worst of all, he’d find his battery dead every few mornings. He’d already replaced the battery and alternator. After connecting my scan tool, I found a slew of communication codes, primarily a U0140 (Lost Communication With Body Control Module). A parasitic draw test confirmed a significant drain originating from the BCM circuit. The module was failing internally, staying partially ‘awake’ and draining the battery. Installing a VIN-programmed BCM like this one solved all the issues in one shot, getting him back to work without the worry of a no-start.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ Unexplained parasitic battery drain leading to a dead battery.
- ✔ The security or anti-theft system preventing the engine from starting.
- ✔ Intermittent operation of the horn, windshield wipers, or radio.
- ✔ Dashboard warning lights (like Airbag or ABS) illuminating without a clear cause.
- ✔ Communication error codes stored, such as U0140, U0155, or other ‘U’ codes.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- ✔ Locate the BCM: On most of these GM models, the BCM is located under the driver’s side of the dashboard, often near the steering column or behind the kick panel. On vans like the Express/Savana, it’s typically in the center dash area. A quick search for your specific model will confirm the location.
- ✔ Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that must be depressed to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: lights, locks, windows, radio, etc., to confirm the repair.
Important Post-Installation Information
While our VIN programming handles the majority of the setup, some vehicles may require additional steps after installation:
- Airbag System Sync: If the airbag warning light is on 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.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any procedure.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM cars, trucks, and SUVs. Please verify your part number against our list to ensure an exact match. This part is compatible with the following 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
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the Body Control Module with the exact software and vehicle-specific options your car came with from the factory. This ensures all features work correctly and prevents compatibility issues.
Is any other programming required after installation?
In most cases, no. Our VIN programming handles the primary setup. However, as noted, some vehicles might require a simple relearn procedure for the airbag system or brake pedal position sensor, which may need a professional scan tool.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
How do I find the part number on my current BCM?
The part number is printed on a sticker on the module’s housing. Once you locate the BCM in your vehicle, you should be able to see the label. Matching this number to our compatibility list ensures you’re ordering the correct part.
Will this fix my car’s no-start problem?
If the no-start is caused by the BCM failing to communicate with the anti-theft system or other essential modules, then yes, replacing it will likely solve the problem. However, a no-start can have many causes, so proper diagnosis is always recommended.