2013 Sierra 3500 BCM 15940214 Body Control Module | Cloning Service

Tired of Chasing Electrical Gremlins in Your GM Truck?

If you’re dealing with a 2013 GMC Sierra 3500 that seems to have a mind of its own—with flickering lights, a dead HVAC system, or random warning messages—you’re likely facing a failing Body Control Module (BCM). As the central command for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and hard-to-diagnose issues. This OEM-quality replacement, corresponding to part number 15940214, is the definitive solution to restore order and reliability to your vehicle.

What sets our service apart is our specialized Cloning Service. Instead of shipping you a blank module that requires an expensive trip to the dealership for programming, we transfer the exact data from your original BCM to this replacement unit. This makes the installation truly plug-and-play. You send us your old module, we perform the data transfer, and we ship both units back to you. This process ensures all your vehicle’s specific options and security information are preserved, saving you time, money, and the headache of a non-starting truck.

Is Your Truck Exhibiting These BCM Failure Symptoms?

• ✔ The climate control is unresponsive, or the blower motor works intermittently.
• ✔ Power windows, door locks, or interior/exterior lights are behaving erratically or have stopped working entirely.
• ✔ An airbag warning light is illuminated, often accompanied by Diagnostic Trouble Code (DTC) B1001.
• ✔ The anti-theft or security system malfunctions, leading to no-start or stalling situations.
• ✔ The instrument cluster displays strange warnings or loses communication.
• ✔ You’re pulling multiple U-codes (Communication Codes) that don’t seem related.

A Straightforward Guide to Your BCM Replacement

Our cloning service makes the electronic part of the job simple. The physical replacement is just as easy and can be done with basic hand tools in your own garage.

1. Step 1: After placing your order, carefully remove your original BCM. It’s typically located under the driver’s side dashboard, near the steering column.
2. Step 2: Securely package and ship your original module to us using the instructions provided in your order confirmation email.
3. Step 3: Once we receive it, our technicians will clone the data to your new module and ship both units back to you, typically within one business day.
4. Step 4: Before installing the new module, Pro Tip: Disconnect the negative battery terminal. This prevents any potential electrical shorts.
5. Step 5: Install your newly cloned BCM by connecting the wiring harnesses and mounting it in place. Reconnect the battery.
6. Step 6: Start the vehicle. Because it’s a direct clone, no further programming is needed for basic operation. Your truck should start and run with all previous functions restored.

Important Post-Installation Note: In some cases, particularly if you had an airbag light on, you may need to perform a ‘Setup SDM Primary Key in BCM’ procedure using a professional-grade scan tool. This re-syncs the BCM with the airbag system. A ‘Brake Pedal Position Relearn’ may also be required on certain models.

Guaranteed Fitment for Your GM Truck or SUV

This module is a direct replacement for part number 15940214 and other interchangeable numbers. It is verified to fit the following General Motors vehicles:

Frequently Asked Questions