Are you chasing down bizarre electrical issues in your 2012-2013 Chevrolet Avalanche 1500? One minute the power windows work, the next they don’t. Maybe your dash lights flicker randomly, or the radio has a mind of its own. As a technician with over two decades of experience, I’ve seen these exact frustrations countless times. The culprit is almost always a failing Body Control Module (BCM), the central hub for your truck’s comfort and convenience features.
This isn’t just a part; it’s a complete solution. We provide a reliable replacement Body Control Module, part number 22846364, that arrives at your doorstep pre-programmed to your truck’s specific VIN. This crucial step ensures all your vehicle’s original options work correctly right out of the box, saving you from a costly and time-consuming trip to the dealership for programming. Simply provide us with your VIN after purchase, and we handle the rest, loading the latest GM software for optimal performance.
Is Your Avalanche Showing These Symptoms?
A failing BCM can cause a cascade of confusing problems. In my shop, these are the most common complaints that point directly to a faulty module. If you’re experiencing any of these, a replacement 2012-2013 Avalanche BCM is the likely solution.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (flickering, staying on, or not turning on).
- ✔ Malfunctioning radio or infotainment system.
- ✔ False warnings on the instrument cluster, such as ‘Service 4WD’ or other system alerts.
- ✔ Security system issues, including problems with the key fob or random alarm activation.
- ✔ Communication error codes, such as U0140 (Lost Communication With Body Control Module).
From the Diagnostic Bay: The Case of the Haunted Sierra
A customer brought in a 2013 Sierra 1500 (which shares this exact BCM with the Avalanche) with a list of problems that sounded like a poltergeist had taken up residence. The dome light would stay on, the driver’s window wouldn’t roll down, and the radio would randomly change stations. He’d already replaced the battery and checked fuses. After connecting my scan tool, I saw a dozen communication codes all pointing back to the BCM. A quick check of the data stream showed erratic voltage readings from the module’s outputs. We installed a VIN-programmed BCM just like this one, and in under an hour, every single ghost in his machine was gone. It’s a classic failure pattern for these modules, and a pre-programmed unit makes the fix fast and permanent.
A Straightforward Guide to Installation
Replacing the BCM on your Avalanche is a manageable job for a DIYer with basic tools. The module is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your truck’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: You may need to remove a lower dash panel or knee bolster to get a clear view of the BCM. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses 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 BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all wiring harnesses. 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 your power windows, locks, lights, and radio to confirm functionality.
Important Post-Installation Steps
While our VIN programming handles the majority of the setup, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of these potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated 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 some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to prevent issues with the traction control system.
Disclaimer: Always consult a factory service manual for your specific vehicle for detailed instructions and torque specs. These steps are a general guide.
Guaranteed Fitment for Your GM Truck or SUV
This replacement 2012-2013 Avalanche BCM is a direct fit for part number 22846364 and also interchanges with part numbers 22737275 and 22846365. It is compatible with a wide range of GM vehicles, including:
- ✔ 2012-2013 Chevrolet Avalanche 1500
- ✔ 2012-2013 Chevrolet Silverado 1500 / 2500 / 3500
- ✔ 2014 Chevrolet Silverado 2500 / 3500
- ✔ 2012-2013 GMC Sierra 1500 / 2500 / 3500
- ✔ 2014 GMC Sierra 2500 / 3500
- ✔ 2012-2014 Cadillac Escalade, ESV, EXT
- ✔ 2012-2014 Chevrolet Suburban 1500
- ✔ 2012-2013 Chevrolet Suburban 2500
- ✔ 2012-2014 Chevrolet Tahoe
- ✔ 2012-2014 GMC Yukon & Yukon XL 1500
- ✔ 2012-2013 GMC Yukon XL 2500
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Is this part difficult to install myself?
For most DIYers with basic tools, this is a straightforward installation. The module is located under the driver’s side dashboard and is typically held in by a few bolts or clips. The main challenge is accessing it.
What does ‘VIN Programmed’ mean?
It means we configure the module’s software to match your vehicle’s specific features (like power seats, sunroof, 4×4, etc.) using the Vehicle Identification Number (VIN) you provide. This ensures it works correctly without a trip to the dealer.
What information do you need from me?
After you place your order, we will need your 17-digit VIN to program the Body Control Module before we ship it.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. If you have a check engine light, the problem is more likely with the Engine Control Module (ECM) or another powertrain component. This BCM will resolve issues with power accessories, lighting, and security.
My part number is slightly different, will this work?
This module, 22846364, is a direct replacement for part numbers 22737275 and 22846365. As long as your vehicle is on the compatibility list, it will function correctly.