Restore Full Functionality to Your GM Truck or SUV
Are you tired of chasing electrical gremlins in your truck? Intermittent power windows, flickering dash lights, a security system that acts up, or door locks with a mind of their own are all 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 host of frustrating and unpredictable problems. In my 20+ years of diagnostics, I’ve seen how a single failing module can make a perfectly good truck feel unreliable. This isn’t just an inconvenience; it’s a matter of function and safety.
This replacement Body Control Module is the definitive solution. It’s not just a part; it’s a complete service. We program the module specifically to your vehicle’s VIN before it ships, loading it with the latest official software from GM. This means it arrives at your door ready for installation, saving you the time, expense, and hassle of a dealership visit for programming. This is the most direct path to getting your truck back to 100%.
From the Diagnostic Bay: The Case of the Haunted Sierra
I remember a 2013 Sierra 1500 that came into the shop with a laundry list of bizarre issues. The radio would turn off randomly, the driver’s side window wouldn’t go down, and the dome light would stay on, draining the battery overnight. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a series of communication error codes (U-codes) pointing to a network problem. By monitoring data streams, I could see the BCM was intermittently dropping offline. A new, properly programmed BCM solved every single issue in one go. This is a common failure, and this part is the exact fix for that scenario.
Is Your Truck 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. Look out for:
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior or exterior lights flickering, staying on, or not turning on at all.
- ✔ The security system light flashing, preventing the vehicle from starting.
- ✔ Inaccurate readings on the instrument cluster gauges.
- ✔ Warning lights for ABS, Airbag, or Traction Control appearing without a clear cause.
- ✔ Communication error codes stored, such as U0140 (Lost Communication With Body Control Module).
A Straightforward Guide to Installation
Replacing your 2012-2013 Sierra 1500 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.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access to the module. It’s a black box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be pressed or lifted. Once disconnected, unbolt the old BCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed BCM into place. Securely reconnect all the electrical connectors, ensuring each one clicks firmly into place.
- Power Up and Test: Reinstall the dash panel, reconnect the negative battery terminal, and start the vehicle. Test all functions: windows, locks, lights, radio, and wipers to confirm the repair.
Important Post-Installation Information
Because this 2012-2013 Sierra 1500 BCM is programmed to your VIN, most functions will work immediately. However, depending on your vehicle’s specific configuration, a couple of simple relearn procedures may be necessary. A ‘Brake Pedal Position Relearn’ might be required for proper brake light and stability control function. Additionally, if the airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the safety systems. Don’t worry, we also offer a no-hassle return policy with no core charge—you can keep your old part.
Verified Vehicle Compatibility
This module, identified by part numbers 22846365, 22737275, or 22846364, is a direct replacement for a wide range of GM trucks and SUVs. It is guaranteed to fit the following models:
- GMC Sierra / Sierra Denali (1500, 2500, 3500): 2012, 2013, 2014
- Chevrolet Silverado (1500, 2500, 3500): 2012, 2013, 2014
- Chevrolet Avalanche 1500: 2012, 2013
- Chevrolet Suburban (1500, 2500): 2012, 2013, 2014
- Chevrolet Tahoe: 2012, 2013, 2014
- GMC Yukon / Yukon XL (1500, 2500): 2012, 2013, 2014
- Cadillac Escalade / ESV / EXT: 2012, 2013, 2014
Please provide your VIN upon checkout to ensure we program the module with the correct software for your vehicle’s specific options.
Your VIN is essential. It allows us to program the BCM with the exact software and settings for your truck’s specific features, like power seats, sunroof, or remote start. This ensures it works correctly right out of the box.
Yes, for the most part. Because we pre-program it, you can avoid a trip to the dealer. In some cases, minor relearn procedures for the brake pedal sensor or airbag system may be needed, which require a professional scan tool.
No. There is no core charge for this part. You can keep your original module.
Multiple, unrelated electrical issues are the biggest clue. For example, if your power windows, radio, and interior lights are all acting up, the BCM is a prime suspect as it controls all of them. A professional diagnosis is always the best way to be certain.
It can. The BCM communicates with the traction and stability control systems. If the BCM is faulty, it can trigger these warnings. However, this message can also be caused by other components, like a wheel speed sensor, so a proper diagnosis is recommended.