Restore Your Truck’s Brain and End Electrical Headaches
As a technician with over two decades of experience, I’ve seen firsthand the chaos a failing Body Control Module (BCM) can cause in a GM truck. One minute your power locks are acting up, the next your dash is lit up like a Christmas tree for no reason. The BCM is the central command center for your vehicle’s body electronics—from the windows and lights to the security system. When it starts to fail, it can feel like your truck has a mind of its own. This isn’t just an annoyance; it can affect safety and leave you stranded. If you’re tired of chasing electrical gremlins in your truck, you’ve found the definitive solution.
This is a direct-fit replacement Body Control Module, compatible with part numbers 22846364, 22737275, and 22846365. The biggest challenge with replacing a BCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. Simply provide us with your vehicle’s VIN during checkout, and our experts will program this module with the latest official GM software specific to your truck’s configuration. It arrives at your door ready for installation, saving you hundreds in dealer fees and getting your truck back to 100% functionality faster. This is the smart, reliable way to fix your 2012-2014 Silverado 3500 BCM and other compatible GM models.
From the Diagnostic Bay: The Case of the Haunted Sierra
A customer brought in his 2013 Sierra 2500, completely frustrated. The radio would turn on and off by itself, the dome light would flicker while driving, and occasionally, the anti-theft system would engage, preventing the truck from starting. He’d already replaced the battery and checked all the grounds. After connecting my scan tool, I saw a flood of U-codes (communication loss) from various modules, all pointing back to the BCM. The BCM was erratically dropping communication, creating these ghost-like symptoms. By installing a VIN-programmed BCM, we resolved every single issue in one shot. It’s a perfect example of how a single component can cause widespread, confusing problems.
Is Your GM Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution. I’ve seen these issues countless times in the shop, often accompanied by communication error codes like U0140.
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not working.
- ✔ The security or anti-theft system engaging randomly, causing no-start conditions.
- ✔ Erratic behavior from the radio or climate control system.
- ✔ False warnings on the instrument cluster (e.g., “Service 4WD,” “Service StabiliTrak”).
- ✔ Key fob not being recognized or working unreliably.
A Straightforward Guide to Installation
Replacing the BCM 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. While the physical swap is simple, be aware of the potential post-installation procedures listed below.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most of these GM trucks and SUVs, you’ll find the BCM under the driver’s side dash. 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 bracket and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, radio, etc. Refer to the post-installation notes below for any necessary recalibration procedures.
Important Post-Installation Information
Because this BCM is pre-programmed to your VIN, most functions will work immediately. However, for safety and system integration, some vehicles may require one of the following relearn procedures. This is normal and ensures all related vehicle systems communicate correctly.
- Airbag System Sync: If your airbag warning light is on after installation, a simple sync procedure called ‘Setup SDM Primary Key in BCM’ is needed. This requires a professional bi-directional scan tool to complete and ensures the airbag system is correctly communicating with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure brake lights and traction control operate correctly. This is also performed with a capable scan tool.
Disclaimer: We are committed to providing a reliable, pre-programmed solution. However, vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step. No core charge is required; you can keep your old part.
Guaranteed Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 22846364 and is also the correct part for vehicles originally equipped with 22737275 or 22846365. It is verified to fit the following models:
- 2012-2013 Chevrolet Avalanche 1500
- 2012-2014 Cadillac Escalade, Escalade ESV, Escalade EXT
- 2012-2013 Chevrolet Silverado 1500 Pickup
- 2012-2014 Chevrolet Silverado 2500 & 3500 Pickup
- 2012-2013 GMC Sierra 1500 Pickup
- 2012-2014 GMC Sierra 2500 & 3500 Pickup (including Denali)
- 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
What exactly does a Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more. A faulty BCM is often the source of strange electrical problems.
Why do you need my VIN number?
Every vehicle has unique options and security information. We use your Vehicle Identification Number (VIN) to load the precise factory software and settings for your specific truck. This ensures the module works correctly right out of the box, saving you a trip to the dealer for programming.
Is this part truly plug-and-play?
For most functions, yes. Because it arrives programmed, it’s a huge step above a generic module. However, as noted, some safety systems like the airbag or brake position sensor may require a simple ‘relearn’ or ‘sync’ procedure with a mechanic’s scan tool to fully integrate with the new BCM. This is a standard industry procedure.
Will this fix my truck’s no-start problem?
If your no-start issue is caused by the anti-theft or security system being incorrectly triggered by a faulty BCM, then yes, this module is designed to resolve that problem. It restores proper communication and security protocols.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
What if my part number is slightly different?
This module, part number 22846364, is a direct, updated replacement for several earlier part numbers, including 22737275 and 22846365. As long as your vehicle is on the compatibility list, this module will work perfectly.