Restore Full Electrical Control to Your GM Truck
Is your 2006-2007 Silverado or Sierra HD plagued by bizarre electrical issues? Flickering lights, unresponsive power windows, or random warning chimes can often be traced back to a single, critical component: the Body Control Module (BCM). This module acts as the central nervous system for your truck’s body electronics. When it fails, it can create a cascade of frustrating and unpredictable problems. This replacement BCM, part number 15107479, is the definitive solution to restore your truck’s factory functions and reliability.
We take the guesswork and dealership hassle out of the equation. Unlike a generic part from a local store, this BCM is professionally programmed to your truck’s specific Vehicle Identification Number (VIN) before it ships. This ensures seamless integration with your vehicle’s existing systems, including the powertrain control module, instrument cluster, and security system. Simply provide your VIN after purchase, and our technicians will load the latest GM software updates, making this a true plug-and-play solution for most users.
Is Your 2006-2007 Silverado BCM Failing?
A faulty Body Control Module can manifest in numerous ways, often mimicking other component failures. Before you start replacing individual switches or motors, check if your truck is exhibiting any of these classic BCM failure symptoms. This module is the key to getting your vehicle back in proper working order.
From the Diagnostic Bay
We had a 2007 Sierra 2500 come in with a complaint that the driver’s side power window and locks would work intermittently. The owner had already replaced the master window switch twice, with no change. After a quick scan, we saw several communication error codes pointing to the BCM. Instead of just commanding functions, the BCM wasn’t properly processing the switch inputs. A new, programmed BCM fixed not only the windows and locks but also a strange interior light issue the owner had forgotten to mention. It’s a perfect example of how this one module can be the root cause of multiple, seemingly unrelated problems.
Common Symptoms of a Defective BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, dome lights) staying on, flickering, or not turning on.
- ✔ The horn honking randomly or the alarm system malfunctioning.
- ✔ Instrument cluster gauges behaving strangely or warning lights appearing without cause.
- ✔ Remote keyless entry (RKE) system failing to respond.
- ✔ Wipers activating on their own or not working when commanded.
- ✔ Communication errors with other vehicle modules when using a diagnostic scan tool.
Installation and Post-Install Procedures
The BCM is typically located under the driver’s side of the dashboard, near the steering column. Installation involves disconnecting the battery, removing a few trim panels for access, and carefully swapping the electrical connectors from the old module to the new one. While the VIN programming handles the majority of the setup, some vehicles may require additional steps after installation.
Airbag System Sync: If the airbag warning light is illuminated after you install the new BCM, a procedure called ‘Setup SDM Primary Key in BCM’ must be performed. This requires a professional-grade scan tool to synchronize the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM). This is a security measure and is only necessary if the light appears.
Brake Pedal Position Relearn: On some models, the BCM is tied into the traction control and brake light systems. A brake pedal position sensor relearn or recalibration might be needed to ensure these systems function correctly. This also typically requires a capable diagnostic tool.
Guaranteed Fitment for Your Truck
This Body Control Module is a direct replacement for part number 15107479 and is confirmed to fit the following vehicles equipped with the 6-speed automatic transmission (RPO code MW7) and Crew Cab configuration:
- 2006-2007 Silverado 2500/3500 Pickup (2007 models must be ‘Classic’ style with creased door skin)
- 2006-2007 Sierra 2500/3500 Pickup (2007 models must be ‘Classic’ style with creased door skin)
There is no core charge for this part. You can keep your original module without the hassle of shipping it back.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes, for the vast majority of vehicles. Because we program it with your specific VIN and the latest GM software before shipping, it will integrate with your truck’s systems upon installation. In some rare cases, post-install procedures like an airbag sync or brake pedal relearn may be needed, which require a professional scan tool.
Where do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your module until we receive this information.
What happens if the airbag light comes on after I install it?
This indicates that the BCM and the airbag module (SDM) need to be electronically ‘introduced’. A technician with a high-level scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and clear the light.
Do I need to return my old BCM?
No. This part is sold with no core charge. You are free to keep or dispose of your original module as you see fit.
How can I be sure this is the correct part for my truck?
Please match the part number 15107479 to your original module. You can also verify fitment by checking the compatibility list on this page, which covers 2006-2007 Silverado and Sierra 2500/3500 Crew Cab models with the 6-speed automatic transmission.