The Central Command for Your Vehicle’s Electronics
Are you chasing down frustrating electrical gremlins in your GM car, truck, or van? Issues like power windows that won’t cooperate, door locks acting erratically, a security system that prevents starting, or interior lights that flicker are more than just an annoyance—they’re hallmark symptoms of a failing Body Control Module (BCM). The BCM is the central hub that manages dozens of your vehicle’s comfort and convenience features. When it malfunctions, it can create a cascade of confusing problems.
This is your direct, reliable solution. We provide a high-quality replacement GM Body Control Module, pre-programmed with the latest GM software specifically for your vehicle. Simply provide your VIN at checkout, and our experts will flash the module, making it ready for installation right out of the box. This saves you a costly trip to the dealership and the hassle of needing specialized programming tools.
A Technician’s Notebook: The Case of the Chaotic Impala
A few months back, a 2011 Chevrolet Impala was towed to our shop. The owner was at his wit’s end. The instrument cluster would go dark while driving, the radio would cut out, and the anti-theft light was on, causing an intermittent no-start. His previous mechanic had replaced the battery and checked the alternator, but the problems persisted. Our initial scan revealed a flood of communication (U-series) diagnostic trouble codes. In my 20+ years of experience, this pattern almost always points to a faulty network controller, and in this vehicle, that’s the BCM. We installed a VIN-programmed BCM, and like flipping a switch, every single electrical issue vanished. It’s a perfect example of how one faulty module can disrupt the entire vehicle.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty GM Body Control Module is the likely culprit:
- ✔ Erratic or non-functional power windows, locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft light is illuminated, often causing a no-start condition.
- ✔ Intermittent operation of the radio or climate controls.
- ✔ False warnings on the instrument cluster (e.g., ‘Service Theft System’).
- ✔ Communication-related Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or U0100.
- ✔ Horn sounding unexpectedly or not working when pressed.
A Straightforward Guide to Your BCM Installation
Replacing the BCM is a manageable task for a confident DIYer. While locations vary, the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On most of these GM models, the BCM is located inside the cabin, typically under the driver’s or passenger’s side of the dashboard, or behind the center console. A quick search for your specific model will confirm its position.
- Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed to release them. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and set it aside. Mount your new, pre-programmed module in its place.
- Reconnect Everything: Plug all electrical connectors firmly into the new BCM. Reconnect the negative battery terminal.
- Post-Install Checks: Start the vehicle and test all body functions (lights, windows, locks, etc.). Note that some vehicles may require additional relearn procedures as detailed below.
Important Post-Installation Information
Your new BCM is programmed and ready to go, but due to the security architecture of modern vehicles, a couple of additional steps might be necessary in some cases:
- ✔ Airbag System Sync: If the airbag (SRS) warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This syncs the new BCM with the airbag module and requires a professional-grade scan tool.
- ✔ 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.
- ✔ No Core Charge: We do not require you to send your old part back. There is no core charge associated with this purchase.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the process.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for a wide range of original equipment part numbers and fits numerous GM vehicles. Please verify that your vehicle is on this list. This part is compatible with 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.
- ACADIA 07-12
- AVALANCHE 1500 10
- CAPRICE 11-13
- CAPTIVA SPORT 12
- CTS 08-13
- DTS 06-11
- ENCLAVE 08-12
- EQUINOX 07-09
- ESCALADE / ESV / EXT 10
- EXPRESS 1500 VAN 08-12
- EXPRESS 2500 VAN 08-12
- EXPRESS 3500 VAN 08-12
- G8 08-09
- HUMMER H2 08-09
- IMPALA 06-13
- LUCERNE 06-11
- MONTE CARLO 06-07
- OUTLOOK 07-10
- SAVANA 1500 VAN 08-12
- SAVANA 2500 VAN 08-12
- SAVANA 3500 VAN 08-12
- SRX 07-09
- STS 10
- SUBURBAN 1500 10
- TAHOE 10
- TORRENT 07-09
- TRAVERSE 09-12
- VUE 08-10
- YUKON / YUKON XL 1500 10
Frequently Asked Questions
What exactly does a Body Control Module do?
What exactly does a Body Control Module do?
The BCM acts as the main computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, security system, wipers, and the radio, ensuring all these convenience features work together properly.
Is this BCM difficult to install?
For someone with basic mechanical skills, it’s a manageable job. The main challenge is typically accessing the module under the dashboard. Since we pre-program the module to your VIN, you eliminate the most complex step, which is software flashing.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the GM Body Control Module with the exact software and settings your vehicle had when it left the factory. This ensures perfect compatibility with your specific options and systems.
What happens if my airbag light comes on after installation?
This is an occasional security measure. The new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is there a core charge for my old part?
No, there is no core charge. You are free to keep or dispose of your original module without any extra fees or hassle.
How do I find my original BCM part number to be sure this fits?
Your original part number is printed on a sticker on the BCM itself. However, our compatibility is guaranteed by your VIN. As long as your vehicle model and year are listed, our VIN-programming ensures this module will function correctly, even if your original part number is different from the ones listed.