Are you chasing electrical gremlins in your GM vehicle? Flickering dashboard lights, power windows with a mind of their own, or a radio that cuts out unexpectedly are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. I’ve spent over 20 years diagnosing these exact problems, and a failing BCM is one of the most common culprits for modern electronic headaches.
This isn’t just a replacement part; it’s a complete solution. We take a genuine GM BCM, part number 22915542 (also interchangeable with 22820314), and professionally program it to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This means it arrives loaded with the latest GM software updates, ready for installation. You get to skip the expensive trip to the dealership for programming, saving you both time and money. This is the smart, efficient way to restore your vehicle’s functionality and peace of mind.
A Technician’s Notebook: The Ghost in the Acadia
I remember a 2015 GMC Acadia that came into the shop with a list of bizarre symptoms. The owner said the interior lights would stay on, the liftgate wouldn’t open, and occasionally the dash would go completely dark while driving. They had already replaced the battery, but the problems persisted. After hooking up my scan tool, I found a slew of ‘U’ codes, indicating a loss of communication between various modules. The common link? The BCM. A failing BCM acts like a bad switchboard operator, dropping calls between critical systems. Installing a new, properly programmed GM BCM 22915542 restored all communication, and the vehicle was back to normal in an hour. This part solved every single issue.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ Intermittent warning lights on the dashboard (e.g., Service StabiliTrak, Airbag light).
- ✔ Radio or infotainment system malfunctions.
- ✔ Key fob not working correctly or security system issues.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes.
Your Step-by-Step BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. While the exact location varies (typically behind the driver’s or center dash), the general process is straightforward.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system capacitors to discharge.
- Locate the BCM: Depending on your model (e.g., Traverse, Impala, Savana), the BCM is usually located under the driver’s side of the dashboard or behind the center console. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed GM BCM 22915542 in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
- Reconnect and Test: Reinstall any panels you removed and reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, radio, etc.
Important Post-Installation Information
Because this GM BCM 22915542 is the central computer for body electronics, a couple of quick relearn procedures may be necessary after installation to ensure all systems communicate correctly:
- Airbag System Sync: If your airbag warning light is on after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag module. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure your brake lights and traction control system function perfectly. This is also performed with a scan tool.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility List
This module is a direct-fit replacement for the following vehicles, matching part numbers 22915542 and 22820314:
- Acadia: 2013-2016 (LH dash) & 2017 (VIN J, Limited)
- Captiva Sport: 2013-2015 (center dash)
- CTS: 2014 (SW & V-Series Sedan), 2014-2015 (Coupe) – (LH dash)
- Enclave: 2013-2017 (LH dash)
- Express Van (1500/2500/3500): 2013-2018 (center dash)
- Impala: 2013 & 2014-2016 (Limited, VIN W) – (LH dash)
- Savana Van (1500/2500/3500): 2013-2018 (center dash)
- Traverse: 2013-2017 (LH dash)
Frequently Asked Questions
How does the VIN programming work?
It’s simple! After you complete your purchase, just send us your 17-digit VIN. We use it to load the latest, correct GM software for your specific vehicle onto the BCM. This ensures it works correctly right out of the box, saving you a trip to the dealer.
Do I need to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module, which eliminates the hassle and cost of a core charge and return shipping.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a bi-directional scan tool, which is a professional-grade diagnostic tool. Many local repair shops can perform these quick relearns for a small fee if needed.
Is this part difficult to install myself?
For someone with basic mechanical skills, it’s a very manageable job. The main challenge is typically accessing the module under the dashboard. Our pre-programming eliminates the most difficult part of the process—the software setup.
Will this fix my ‘Service StabiliTrak’ message?
It’s a strong possibility. The BCM is a key component in the StabiliTrak system. When it fails, it often triggers that warning message due to lost communication with the brake and steering sensors. Replacing a faulty BCM is a common fix for this issue.