If your 2012-2013 Silverado 1500 is starting to feel haunted by electrical gremlins, 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 truck into a source of daily frustration. The BCM is the central nervous system for your vehicle’s comfort and convenience features—from the power windows and door locks to the interior lights and radio. When it starts to fail, the symptoms can be bizarre and unpredictable.
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and dealership hassle out of the equation. Simply provide us with your truck’s Vehicle Identification Number (VIN) during checkout, and our experts will program this module with the latest stable software directly from GM. It will arrive at your door ready to be installed, saving you from expensive programming fees and diagnostic headaches.
Is Your Truck Exhibiting These BCM Failure Signs?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Dashboard lights flickering, gauges behaving erratically, or warning lights staying on for no reason.
- ✔ The radio or infotainment system randomly shutting off or not turning on at all.
- ✔ Security system issues, including false alarms or the inability to start the vehicle.
- ✔ Inconsistent interior or exterior lighting operation.
- ✔ Communication error codes stored in the system, such as U0140 (Lost Communication With Body Control Module).
Case Study: A Tricky Diagnosis
A customer brought in his 2013 Sierra 2500 with a complaint that would drive anyone crazy: his dome lights would randomly come on while driving at night, and his key fob would only work sporadically. He’d already replaced the battery and checked fuses. After hooking up my scan tool, I saw multiple communication loss codes pointing to the BCM. Instead of a costly diagnostic path, we installed one of these pre-programmed modules. In under an hour, the truck was fixed. The key fob worked from 50 feet away, the lights stayed off, and the customer drove away relieved. This is the simple, effective fix for these complex issues.
Your Straightforward BCM Installation Guide
Installing your new Silverado 1500 Body Control Module is a manageable job for a confident DIYer. The BCM 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 allow the systems to discharge completely.
- Access the Module: You may need to remove the lower dash panel or knee bolster to get a clear view of the BCM. It’s usually held in place by a few small bolts or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors. These connectors have locking tabs, so be sure to depress them fully to avoid damaging the wiring. Once disconnected, remove the old BCM.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reinstall any panels you removed and reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: windows, locks, radio, lights, and wipers.
Important Post-Installation Note: In some cases, additional system relearns may be required. For example, if the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. A Brake Pedal Position relearn might also be necessary for proper brake light and traction control function. Always consult a factory service manual for specifics related to your model.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 22846365, 22737275, and 22846364. It is confirmed to fit the following vehicles:
- ✔ 2012-2013 Chevrolet Silverado 1500 / GMC Sierra 1500
- ✔ 2012-2014 Chevrolet Silverado 2500/3500 / GMC Sierra 2500/3500
- ✔ 2012-2013 Chevrolet Avalanche 1500
- ✔ 2012-2014 Chevrolet Tahoe / Suburban 1500 & 2500
- ✔ 2012-2014 GMC Yukon / Yukon XL 1500 & 2500
- ✔ 2012-2014 Cadillac Escalade / ESV / EXT
Note: For some 2013-2014 models, please verify the ID on your original module matches one of the compatible part numbers.
Frequently Asked Questions
Do I need to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module.
Is this part truly plug-and-play?
Yes, it is. We program it to your vehicle’s VIN before shipping, so it’s ready for installation without needing a trip to the dealer. However, as noted, some models may require a simple relearn procedure for the airbag or brake pedal position sensor.
What information do you need from me?
After you complete your purchase, you must provide us with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
Will this fix my ‘Service 4WD’ message?
While a failing BCM can cause a variety of electronic issues, the ‘Service 4WD’ message is more commonly associated with the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the codes scanned to confirm the source of the fault.
What if my original part number isn’t listed?
This module replaces part numbers 22846365, 22737275, and 22846364. If your number is different, please contact us with your VIN, and our experts can verify compatibility for you.