If you’re dealing with bizarre electrical gremlins in your GM truck or SUV, 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 workhorse into a source of constant frustration. Flickering lights, malfunctioning power windows and locks, a security system that won’t cooperate, or a persistent battery drain are all classic signs. This isn’t just an annoyance; it’s a critical failure in your vehicle’s central nervous system for body electronics.
This is the definitive, hassle-free solution. We offer a genuine OEM Body Control Module, part number 22737275 (also fits 22846365 and 22846364), that arrives at your door fully programmed to your vehicle’s specific VIN. Just provide us with your VIN after purchase, and our experts will flash the module with the latest GM software. This means no expensive trips to the dealership, no towing fees, and no paying for separate programming. This is the direct-fit, reliable repair you need to get your truck back to 100%.
From the Diagnostic Bay: The Case of the Phantom Drain
A customer brought in his 2013 Sierra 2500 with a problem that was driving him crazy: a dead battery every two or three days. He’d already replaced the battery and alternator, but the issue persisted. After hooking up my multimeter, I found a significant parasitic draw. The tricky part was that it was intermittent. After hours of tracing circuits, I isolated the issue to the BCM. It wasn’t fully shutting down certain circuits after the key was off, slowly draining the new battery. A pre-programmed BCM like this one would have been a 30-minute fix in his own garage, saving him hundreds in diagnostic and labor costs.
Is Your GM Truck Showing These Symptoms?
A faulty BCM can cause a wide range of issues. If you’re experiencing any of the following, this module is likely the solution. This is a common failure point I’ve diagnosed on hundreds of GM trucks.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or exterior lights staying on or not working at all.
- ✔ The security system acting up, causing a no-start condition.
- ✔ Unexplained battery drain that kills your battery overnight.
- ✔ Warning messages on the dash like “Service 4WD” or “Service StabiliTrak”.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140 (Lost Communication With Body Control Module) or other U-codes and B-codes.
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast. It’s located under the driver’s side of the dashboard, near the steering column. While specific steps can vary slightly, here is a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove the lower dash panel beneath the steering wheel. This usually involves a few screws or clips.
- Locate the BCM: Identify the Body Control Module. It’s a plastic box with several large multi-pin electrical connectors plugged into it.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors firmly until they click into place.
- Final Steps: Reinstall the lower dash panel and reconnect the negative battery terminal.
Important Post-Installation Information
Because this module is central to many systems, a couple of simple relearn procedures may be required after installation. This is normal and ensures all related components communicate correctly with the new BCM.
- Airbag System Sync: If the airbag light is on after installation, a “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade scan tool to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
Verified Fitment for Your GM Truck or SUV
This module is a guaranteed fit for a wide range of General Motors vehicles. Please verify your model and year from the list below. This part directly replaces part numbers 22737275, 22846365, and 22846364.
- Avalanche 1500 (2012-2013)
- Cadillac Escalade / ESV / EXT (2012-2014)
- Sierra 1500 / Denali 1500 (2012-2013)
- Sierra 2500 / 3500 (2012-2014)
- Sierra Denali 2500 / 3500 (2012-2014)
- Silverado 1500 (2012-2013)
- Silverado 2500 / 3500 (2012-2014)
- Suburban 1500 (2012-2014)
- Suburban 2500 (2012-2013)
- Tahoe (2012-2014)
- Yukon / Yukon XL 1500 (2012-2014)
- Yukon XL 2500 (2012-2013)
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming myself?No. This Body Control Module comes fully programmed to your vehicle’s VIN. Simply provide your VIN during checkout, and it will arrive ready for installation with the latest GM software.