Solve Your Truck’s Electrical Issues with a Cloned BCM

Is your 2003-2007 GMC Sierra 2500 experiencing frustrating electrical problems? Flickering lights, a dead instrument cluster, or a security system that randomly prevents your truck from starting are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable. This replacement module, part number 15137393, is the definitive solution, offered with our expert cloning service to get you back on the road without the hassle and expense of a dealership visit.

Unlike standard pre-programmed modules, our cloning service is a true game-changer for both DIYers and professional mechanics. We transfer the exact data from your original BCM directly onto this replacement unit. This means the new module is a perfect digital twin of your old one, retaining all your vehicle’s specific settings, key data, and options. The result is a true plug-and-play installation that often eliminates the need for complicated post-install relearn procedures. For a hardworking 2003-2007 Sierra 2500 BCM, this is the most efficient and reliable repair method available.

Is Your Sierra Showing These BCM Failure Symptoms?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your 2003-2007 Sierra 2500 BCM is the likely culprit. Catching it early can prevent further diagnostic headaches and keep your truck dependable.

• ✔ Intermittent or non-functional power windows, door locks, or interior lights.
• ✔ HVAC blower motor not working or behaving erratically.
• ✔ The security or anti-theft system light is on, causing a no-start condition.
• ✔ An airbag warning light on the dash, sometimes with a B1001 code.
• ✔ Strange behavior from wipers, radio, or other electronic accessories.
• ✔ Communication-related Diagnostic Trouble Codes (DTCs) stored in the system.

Your 5-Minute BCM Swap Guide

Our cloning service makes the physical installation incredibly simple. You don’t need to be a master technician to get this job done. Just follow these steps:

1. Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work. This prevents shorts and helps reset the system.
2. Locate the BCM: On most GMT800 trucks like the Sierra, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large multi-pin connectors.
3. Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, the module can be unclipped or unbolted from its mounting bracket.
4. Install the New Module: Seat the replacement BCM into the mounting bracket and firmly reconnect all electrical connectors until they click into place.
5. Reconnect and Test: Reconnect the battery terminal. Start the truck and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.

Guaranteed Fitment for Your GM Truck or SUV

This Body Control Module is a direct replacement for part number 15137393 and is also interchangeable with several other part numbers, including 15116066, 15136225, 15198116, and more. It is designed for a wide range of General Motors trucks and SUVs. Please verify your model and year from the list below: