If you’re dealing with baffling electrical issues in your 2012-2013 Chevrolet Avalanche or another compatible GM truck, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant frustration. Flickering dash lights, power windows with a mind of their own, or a security system that prevents you from starting your engine—these are classic signs that the BCM, the central nervous system for your vehicle’s electronics, is failing.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take a genuine GM Body Control Module (interchangeable with part numbers 22737275, 22846365, and 22846364) and professionally program it to your truck’s specific Vehicle Identification Number (VIN) before it ships. This crucial step means you can bypass expensive dealership programming fees and lengthy service appointments. You get a module that’s truly ready for installation right out of the box, loaded with the latest GM software updates for optimal performance and reliability.
From the Diagnostic Bay
I remember a 2013 Silverado 2500 that came into my shop with a laundry list of bizarre symptoms. The owner was fed up. The radio would randomly shut off, the driver’s side power window wouldn’t work, and occasionally, the truck would refuse to crank, showing a ‘Service Theft Deterrent System’ message. He’d already replaced the battery and checked fuses. After connecting my scan tool, I found a slew of U-codes (communication errors) pointing to the BCM. Instead of a complex wiring chase, the fix was a new, properly programmed BCM. This part solved every single one of his issues in one go, demonstrating how this single module is the key to restoring order to your truck’s electronics.
Is Your Truck Showing These Symptoms?
A faulty BCM can cause a wide range of problems that may seem unrelated. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (e.g., dome lights staying on, headlights flickering).
- ✔ The security or anti-theft light is on, often causing a no-start condition.
- ✔ The radio or infotainment system behaves unpredictably.
- ✔ False warnings on the driver information center (DIC).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0151, or other U-codes.
- ✔ Horn or alarm sounding without reason.
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a confident DIYer. The module is typically located under the driver’s side of the dashboard, near the steering column. While this guide is a great starting point, always have a vehicle-specific service manual on hand.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to access the module. It’s a black box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully release the locking tabs on each electrical connector and unplug them from the old BCM. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click firmly into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Relearns (If Needed): Start the vehicle. In some cases, you may need to perform a post-installation procedure like an airbag system sync or brake pedal position relearn if specific warning lights appear.
Important Post-Installation Information
Important Post-Installation Information
Our pre-programming handles the most critical part of the job. However, on some GM models, additional system handshakes may be required after installation:
Verified Vehicle Compatibility
This Body Control Module is a guaranteed fit for the following GM trucks and SUVs. Please verify your part number (22737275, 22846365, or 22846364) for a perfect match.
- Chevrolet Avalanche 1500: 2012-2013
- Chevrolet Silverado 1500/2500/3500: 2012-2014
- Chevrolet Suburban 1500/2500: 2012-2014
- Chevrolet Tahoe: 2012-2014
- GMC Sierra 1500/2500/3500 (including Denali): 2012-2014
- GMC Yukon & Yukon XL (including Denali): 2012-2014
- Cadillac Escalade, ESV, EXT: 2012-2014
Frequently Asked Questions
Important Post-Installation Information
Our pre-programming handles the most critical part of the job. However, on some GM models, additional system handshakes may be required after installation: