2003-2007 Sierra 2500 BCM 15064149 | VIN Programmed for Easy Installation

Tired of Unpredictable Electrical Problems in Your GM Truck?

If you’re dealing with a 2003-2007 GMC Sierra 2500 that seems to have a mind of its own—lights flickering, power windows refusing to work, or an HVAC system that’s gone rogue—you’re not alone. As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times. The culprit is almost always a failing Body Control Module (BCM). This component is the central command for your truck’s body electronics, and when it starts to fail, it can cause a cascade of frustrating and seemingly unrelated problems. This isn’t just an inconvenience; a faulty BCM can affect your vehicle’s security system and even trigger a persistent airbag warning light.

This replacement BCM, part number 15064149, is the definitive solution. We take the guesswork and hassle out of the repair by pre-programming it to your truck’s specific Vehicle Identification Number (VIN). This means it arrives ready for a true plug-and-play installation, restoring full functionality without a mandatory and expensive trip to the dealership for programming. It’s the same reliable fix I would perform in my own service bay.

Is Your Truck Exhibiting These Electrical Gremlins?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. This is especially true if you see diagnostic trouble codes like B1001, which points directly to a configuration error often caused by internal BCM failure.

• ✔ Unresponsive or erratic HVAC controls, including a blower motor that works intermittently.
• ✔ Power windows, door locks, or interior/exterior lights that fail to operate correctly.
• ✔ An active airbag warning light on the dashboard.
• ✔ Malfunctions with the vehicle’s security system, leading to a no-start condition.
• ✔ Poor ground connections or communication errors between electronic modules.

A Straightforward Guide to Your BCM Installation

One of the best features of this module is its simple, DIY-friendly installation. You don’t need to be a professional mechanic to get your truck back in order. The entire process typically takes less than 15 minutes.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
2. Locate the BCM: On most Sierra, Silverado, and similar GM trucks, the BCM is located under the driver’s side dashboard, just to the left of the steering column.
3. Remove the Old Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once unplugged, unclip the module from its mounting bracket.
4. Install the New Module: Snap your new, VIN-programmed BCM into the mounting bracket and securely plug in all the electrical connectors.
5. Reconnect and Test: Reconnect the battery terminal. Start your truck and test all the functions: lights, windows, locks, wipers, and HVAC to confirm the repair is complete.

Post-Installation Note: In some cases, particularly if the airbag light was on, a ‘Setup SDM Primary Key’ procedure may be needed using a professional scan tool to sync the new BCM with the airbag system. This is not always required but is a possibility. Additionally, a Brake Pedal Position relearn might be necessary on certain models.

Verified Vehicle Compatibility List

This module is a direct replacement for part number 15064149 and other interchangeable numbers. It is guaranteed to fit the following models, but always verify your specific options (e.g., cab type, transmission) to ensure a perfect match.