The Permanent Fix for Your GM Truck’s Electrical Gremlins

If you’re dealing with bizarre electrical issues in your 2003-2007 Silverado 3500 Pickup—like flickering lights, a dead instrument cluster, or a security system that has a mind of its own—you’ve likely met the frustrating reality of a failing Body Control Module (BCM). As the central command for your truck’s body electronics, a faulty BCM can cause a cascade of problems that are often difficult to diagnose. This module, part number 15137395, is the definitive solution, offered with our expert cloning service to eliminate the need for expensive dealership programming.

Is Your GM Truck Showing These Telltale Signs?

A failing BCM doesn’t usually die silently. It will give you warnings. If your vehicle is experiencing any of the following, it’s a strong indicator that your BCM needs replacement:

• ✔ Erratic or non-functional interior and exterior lights.
• ✔ Power windows, door locks, or mirrors that work sporadically or not at all.
• ✔ HVAC and climate control problems, such as a blower motor that won’t turn on or stays stuck on high.
• ✔ An active airbag warning light, often with a Diagnostic Trouble Code (DTC) like B1001 (Option Configuration Error).
• ✔ Vehicle security system malfunctions, leading to a no-start or no-crank condition.
• ✔ Intermittent warning messages on the driver information center (DIC).
• ✔ Communication loss codes (U-codes) when scanned with a diagnostic tool.

The Advantage of Our BCM Cloning Service

Why choose our service? We make the repair simple and foolproof. Instead of buying a blank module and paying a dealership hundreds for programming, you send us your original BCM. We extract the unique data that’s specific to your truck’s VIN and features and flash it directly onto this replacement module. The result is a true plug-and-play part. It arrives at your door ready for immediate installation, with all your vehicle’s original settings intact. No extra steps, no hidden fees, and no core charges—we always return your original module with the newly programmed one.

A Straightforward Guide to BCM Installation

Replacing the BCM is one of the easier electronic repairs you can do. For most Silverado, Sierra, and other compatible GM trucks and SUVs, the BCM is located under the driver’s side dashboard, near the steering column.

1. Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery. This prevents any electrical shorts and helps reset the vehicle’s systems.
2. Locate the Module: Find the BCM under the driver-side dash. It’s a small plastic box with several large multi-pin electrical connectors. You may need to remove a lower dash panel for access.
3. Swap the Connectors: Carefully release the locking tabs on each electrical connector and unplug them from the old BCM. Plug them into the corresponding ports on your new, cloned BCM. The connectors are color-coded and keyed, so you can’t mix them up.
4. Mount and Reconnect: Secure the new BCM back into its mounting bracket. Re-install any trim panels you removed and reconnect the negative battery terminal.

Post-Installation Note: In some cases, particularly if your airbag light was on, a post-install procedure may be needed. An ‘SDM Primary Key Setup’ or ‘Brake Pedal Position Relearn’ might be required and can be performed with a capable bi-directional scan tool. This syncs the new BCM with the other modules in your vehicle.

Verified Vehicle Compatibility

This BCM is a direct-fit replacement for a wide range of General Motors vehicles. While this page focuses on the 2003-2007 Silverado 3500 BCM, it is also compatible with the following models. Please verify your part number (15137395 or an interchangeable number) for a guaranteed fit.