Are you chasing electrical gremlins in your GM truck or SUV? One minute the power windows work, the next they don’t. The radio might shut off randomly, or the security light stays on, preventing your vehicle from starting. These frustrating and seemingly unrelated issues often point to one central culprit: a failing Body Control Module (BCM). As the electronic nerve center of your vehicle, the BCM manages a vast array of comfort, convenience, and security functions. When it starts to fail, it can make driving your truck an unpredictable headache.
This isn’t just a replacement part; it’s a complete solution. We provide a genuine, fully tested Body Control Module that comes programmed specifically for your vehicle using your VIN. This critical step ensures all the options and features your truck came with from the factory will work correctly. By flashing the module with the latest GM software updates before it ships, we eliminate the need for an expensive trip to the dealership for programming. This saves you both time and money, getting you back on the road with confidence.
A Technician’s Notebook
I had a 2013 Silverado 2500 in the bay last month with a laundry list of bizarre symptoms. The owner said his dome lights would stay on, draining the battery, and his power door locks had a mind of their own. He’d already replaced the battery and checked all the fuses. A scan showed a handful of communication error codes (U-codes), but nothing pointed definitively to one component. This is classic BCM failure. The module’s internal logic starts to break down, sending corrupt data across the network. We installed one of these pre-programmed BCMs, and within an hour, every single issue was resolved. The key is getting a module flashed to the correct VIN—it makes the repair straightforward.
Is Your Truck Showing These Symptoms?
A faulty BCM can cause a wide range of issues. If you’re experiencing any of the following, a failing Body Control Module is a likely cause:
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security system light is illuminated, causing no-start conditions.
- ✔ Windshield wipers activating on their own or not working when commanded.
- ✔ The horn sounding unexpectedly.
- ✔ Communication error codes stored, such as U0140 (Lost Communication With Body Control Module).
- ✔ Inaccurate gauge readings on the instrument cluster.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a DIY enthusiast. 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 vehicle’s battery before working on any electronic components.
- Locate the BCM: On most of these GM trucks and SUVs, you’ll find it attached to a bracket under the dash, to the left of the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting location.
- Install the New Module: Mount your new, pre-programmed BCM in the exact same position. Securely plug in all the electrical connectors, ensuring 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, wipers, etc. Note the post-installation procedures below, as some may be required.
Important Post-Installation Steps
While our programming handles the heavy lifting, some GM vehicles require a final handshake between modules. Be aware of these potential procedures:
- Airbag System Sync: If your airbag warning light is on 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: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module, part number 22846364, is a direct replacement for part numbers 22737275 and 22846365. It is guaranteed to fit the following GM models:
- Cadillac Escalade, ESV, EXT: 2012-2014
- Chevrolet Avalanche 1500: 2012-2013
- Chevrolet Silverado 1500, 2500, 3500: 2012-2014
- Chevrolet Suburban 1500: 2012-2014
- Chevrolet Suburban 2500: 2012-2013
- Chevrolet Tahoe: 2012-2014
- GMC Sierra 1500, 2500, 3500 (including Denali): 2012-2014
- GMC Yukon, Yukon XL 1500, Yukon XL 2500 (including Denali): 2012-2014
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the specific software and settings for your truck’s exact features, like power seats, remote start, or security system. This ensures it works correctly right out of the box.
Is this a plug-and-play part?
It is very close. Our VIN programming handles the most complex part, making it a plug-in installation. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal sensor, which may need a capable scan tool.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Will this fix my ‘Service StabiliTrak’ message?
It can, but it’s not guaranteed. While a faulty BCM can cause StabiliTrak errors by sending bad data, the message can also be triggered by wheel speed sensors or the steering angle sensor. A proper diagnosis is always recommended.
What happens if I don’t provide a VIN?
We cannot ship the module without a VIN. The programming is essential for the part to function in your vehicle. Please provide your VIN during checkout or message it to us after your purchase to avoid delays.