Are you chasing electrical gremlins in your GM truck or SUV? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or a frustrating no-start condition can often be traced back to one component: the Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a failing BCM can cause a cascade of baffling issues. Stop throwing parts at the problem and get the definitive solution with our pre-programmed BCM, designed specifically for your vehicle.
This isn’t just a replacement part; it’s a complete repair solution. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN during checkout, and our expert technicians will flash this module with the latest, most stable software directly from GM. It arrives at your door ready for installation, saving you time, a towing bill, and expensive labor charges. This is the most efficient way to restore full functionality to your truck’s essential features.
Case Study: A Tricky Diagnosis
I had a 2013 Silverado 2500 in my bay last month with a truly bizarre complaint. The owner said his radio would randomly turn off, the driver’s side power window would stop working for hours, and occasionally the truck would refuse to crank. He’d already replaced the battery and checked the alternator. A scan showed a handful of U-codes (U0140, U0151), indicating lost communication with the BCM and airbag module. Instead of a clear-cut failure, the BCM was failing intermittently. Swapping in one of our pre-programmed units solved every single issue instantly. These modules are the key to resolving those frustrating, hard-to-pinpoint electrical headaches.
Is Your Truck Exhibiting These BCM Failure Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system prevents the vehicle from starting.
- ✔ Warning lights on the dash, such as “Service StabiliTrak” or airbag warnings.
- ✔ The radio or infotainment system behaves unpredictably.
- ✔ Intermittent no-start or no-crank conditions.
- ✔ Diagnostic Trouble Codes (DTCs) related to lost communication, like U0140, or various body codes (B-codes).
Your Straightforward BCM Installation Guide
Installing your new 2012-2014 Sierra 3500 BCM is a manageable job for a confident DIYer or any professional technician. It is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: Remove the necessary lower dash panels to gain access to the module. It’s often a black box with multiple large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location. Securely plug in all the wiring harnesses, ensuring each one clicks firmly into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test functions like lights, windows, and locks. Start the vehicle and check for proper operation.
Important Post-Installation Notes
While this module is programmed for your VIN, some vehicle systems may require a relearn procedure to sync properly. This is standard for this type of repair. You may need a professional scan tool for the following:
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be required to ensure correct brake light and traction control operation.
Verified Fitment For These GM Models
This Body Control Module is a direct-fit replacement for units with part numbers 22737275, 22846365, or 22846364. It is compatible with the following vehicles:
- 2012-2013 Chevrolet Avalanche 1500
- 2012-2014 Cadillac Escalade, Escalade ESV, Escalade EXT
- 2012-2013 Chevrolet Silverado & GMC Sierra 1500
- 2012-2014 Chevrolet Silverado & GMC Sierra 2500/3500 (including Denali)
- 2012-2014 Chevrolet Suburban 1500
- 2012-2013 Chevrolet Suburban 2500
- 2012-2014 Chevrolet Tahoe
- 2012-2014 GMC Yukon & Yukon XL 1500
- 2012-2013 GMC Yukon XL 2500
Always verify your part number or consult with us if you are unsure about compatibility. This 2012-2014 Sierra 3500 BCM is a common solution for this entire platform.
Frequently Asked Questions
Do I need to send my old BCM back?
No. There is absolutely no core charge for this part. You can keep your original module.
What information do you need to program the BCM?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the module with the correct software and vehicle-specific options before we ship it.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the physical replacement is straightforward. It’s located under the dash and involves unplugging connectors and removing a few bolts. The most important part is being aware that some post-install relearn procedures may be necessary with a scan tool.
Will this fix my “Service StabiliTrak” message?
A failing BCM is a very common cause of this warning message, as it disrupts communication between the brake and stability control systems. While other issues can cause this light, if it’s accompanied by other electrical symptoms, a faulty BCM is a strong possibility.
Is this part new or used?
This is a high-quality, tested component that has been inspected and programmed by our expert technicians with the latest GM software updates for reliable performance.