If you’re dealing with bizarre electrical issues in your GM truck or SUV—like flickering lights, malfunctioning power windows, a radio with a mind of its own, or warning lights that won’t go away—you’ve likely met the frustrating reality of a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these symptoms countless times. The BCM is the central hub for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing problems that are often misdiagnosed.
This isn’t just a replacement part; it’s a complete solution. We take the biggest headache out of the repair process: programming. Simply provide us with your vehicle’s VIN after your purchase, and we will program this BCM with the latest GM factory software specifically for your truck or SUV. It arrives at your door ready for installation, saving you a costly trip to the dealership and their programming fees. This is the same reliable, straightforward fix I would perform in my own service bay.
Common Signs of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ False warning messages on the driver information center (e.g., “Service StabiliTrak,” “Service Airbag”).
- ✔ Erratic behavior from the radio, climate control, or dashboard gauges.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes.
- ✔ Inconsistent turn signal or hazard light operation.
A Technician’s Notebook: The Tahoe with the Flickering Lights
A customer brought in a 2013 Tahoe with a complaint that made him sound crazy. He said the dome lights would flicker randomly, the radio would shut off, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and alternator with no luck. After checking the main power and ground connections, my scan tool showed multiple communication loss codes with various modules. This is a classic sign. Instead of chasing individual components, I went straight for the BCM. Water intrusion from a leaky windshield cowl seal had caused corrosion on one of the main connectors. A new, programmed BCM like this one solved every single one of his ‘ghost’ problems in under an hour.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On most of these GM models, the BCM is located under the driver’s side of the dashboard, near the steering column. 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 old module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Post-Installation Steps: Reconnect the battery terminal. Start the vehicle and check for proper function of lights, locks, and windows. Note that some vehicles may require additional relearn procedures as outlined below.
Important Post-Installation Information
While this 2012-2014 Escalade ESV BCM comes programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new module. This is normal. Specifically:
- Airbag System Sync: If the airbag 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: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn may be required. This also requires a compatible diagnostic tool.
Disclaimer: Vehicle systems vary. For procedures specific to your exact model, always consult a factory service manual or a qualified automotive technician.
Will This Fit My GM Vehicle?
This module is a direct replacement for part numbers 22846364, 22737275, and 22846365. It is guaranteed to fit the following models:
- ✔ 2012-2014 Cadillac Escalade, Escalade ESV, Escalade EXT
- ✔ 2012-2013 Chevrolet Avalanche 1500
- ✔ 2012-2013 Chevrolet Silverado 1500
- ✔ 2012-2014 Chevrolet Silverado 2500/3500
- ✔ 2012-2014 Chevrolet Suburban 1500
- ✔ 2012-2013 Chevrolet Suburban 2500
- ✔ 2012-2014 Chevrolet Tahoe
- ✔ 2012-2013 GMC Sierra 1500 & Denali 1500
- ✔ 2012-2014 GMC Sierra 2500/3500 & Denali 2500/3500
- ✔ 2012-2014 GMC Yukon & Yukon XL 1500
- ✔ 2012-2013 GMC Yukon XL 2500
Frequently Asked Questions
Frequently Asked Questions
Do I need to send my original BCM back?
No. There is absolutely no core charge for this part. You can keep your original module.
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We will program the module before shipping it to you.
Is this a simple plug-and-play installation?
For most functions, yes. Because we program it to your VIN, your vehicle’s main features should work immediately. However, as noted, some systems like the airbag or brake position sensor may require a relearn procedure with a professional scan tool.
Will this fix my ‘Service StabiliTrak’ message?
A faulty BCM is a very common cause of this message due to lost communication with the brake and stability systems. While not a guarantee for every case, replacing a bad BCM often resolves this issue.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn require a bi-directional professional diagnostic tool, such as a GM Tech 2, MDI, or high-end Snap-on or Autel scanner. Standard code readers cannot perform these functions.