Tired of Chasing Electrical Gremlins in Your GM Truck?
If you’re dealing with a 2003-2007 Silverado, Sierra, or Tahoe that seems to have a mind of its own—flickering lights, a dead instrument cluster, power windows that won’t budge, or an HVAC system that’s gone on strike—the Body Control Module (BCM) is the most likely culprit. As the central nervous system for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated problems. Stop throwing parts at the issue and get the definitive fix with this OEM-quality replacement BCM, complete with our expert cloning service.
This isn’t just a part in a box. We take the data from your original, faulty module and transfer it directly onto this replacement unit. The result? A true plug-and-play component that requires no expensive trip to the dealership for programming. It arrives ready to install, restoring full communication between your vehicle’s essential systems and getting you back on the road with confidence.
A Technician’s Notebook: The Case of the Haunted Silverado
I had a 2005 Silverado 1500 in the bay last month that was driving its owner crazy. The complaint was intermittent: some days the radio and dash lights would flicker, other days the power locks wouldn’t respond. He’d already replaced the battery and checked the main grounds. When I hooked up my scanner, I found a slew of communication loss codes (U-codes) and a B1001 for an airbag system fault. In my 20 years of experience, this pattern almost always points to an internal failure in the BCM. The module was shorting internally, disrupting the data bus network. We performed our cloning service on a replacement GM Truck Body Control Module, and the new unit solved every single issue instantly. It’s a classic fix for these platforms.
Is Your Truck Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Power windows, door locks, or mirrors are inoperative or work intermittently.
- ✔ The security system acts up, causing a no-start condition or the alarm to go off randomly.
- ✔ HVAC controls are unresponsive, or the blower motor speed is erratic.
- ✔ Interior dome lights or exterior lights (headlights, taillights) don’t work correctly.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ You’re seeing various communication codes or body-related DTCs on your scan tool.
Your Straightforward 5-Minute Installation Guide
Installing your cloned GM Truck Body Control Module is a simple process that most DIYers can complete with basic tools. No complex wiring or programming is needed.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents accidental shorts and helps reset the vehicle’s systems.
- Locate the BCM: On most Silverado, Sierra, and SUV models, the BCM is located under the driver’s side of the dashboard, just to the left of the steering column. It’s a black plastic box with several large multi-pin connectors.
- Swap the Modules: Carefully unplug the electrical connectors from your old BCM. They have release tabs that need to be pressed. Once disconnected, remove the old module from its mounting bracket and install the new, cloned module in its place.
- Reconnect and Test: Securely plug all connectors into the new BCM. You’ll hear a click when they are properly seated. Reconnect the negative battery terminal.
- Verify Functionality: Start the vehicle and test all the functions that were previously malfunctioning—windows, locks, lights, HVAC, etc. Everything should now operate as it did from the factory.
Post-Installation Note: In some cases, particularly if the airbag light was on, a professional scan tool may be needed to perform the “Setup SDM Primary Key in BCM” procedure to sync the airbag system. A Brake Pedal Position relearn may also be required on certain models. These are simple procedures for any qualified shop.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors trucks, vans, and SUVs. It is interchangeable with part numbers 15064149, 10383536, 15116066, 15136225, 15136877, 15198116, and more. Please verify your model and options below:
CHEVROLET SILVERADO 1500/2500/3500 (2003-2007 Classic, Crew Cab)
CHEVROLET SUBURBAN 1500/2500 (2003-2006)
CHEVROLET TAHOE (2003-2006)
CHEVROLET EXPRESS VAN 1500/2500/3500 (2004-2007 w/ PRP)
GMC SIERRA 1500/2500/3500 & DENALI (2003-2007 Classic, Crew Cab)
GMC YUKON & YUKON XL 1500/2500 (2003-2006)
GMC SAVANA VAN 1500/2500/3500 (2004-2007 w/ PRP)
CADILLAC ESCALADE, ESV, EXT (2003-2006)
HUMMER H2 (2003-2007)
Frequently Asked Questions
How does the cloning service work?
It’s simple. After you place your order, you’ll ship your original BCM to us. Our technicians will extract the unique vehicle-specific data and flash it onto your new replacement module. This ensures perfect compatibility with your truck’s existing keys, security system, and factory options without any additional programming.
Do I need to send my original BCM? Is there a core charge?
Yes, you must send us your original module for the cloning process. However, there is no core charge or deposit. We always return your original module along with the newly programmed replacement unit, so you can keep it.
Will this fix my airbag light?
If the airbag light is on due to a BCM communication fault (like DTC B1001), replacing the module will resolve the root cause. However, after installation, you may need a technician with a capable scan tool to perform the “Setup SDM Primary Key in BCM” procedure to clear the light and sync the systems.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a very straightforward repair. The module is typically easy to access under the dash, and since it arrives pre-programmed, it’s a simple plug-and-play swap that takes only a few minutes.
What if my original part number is slightly different?
This module, part number 15064149, is interchangeable with a wide range of GM part numbers, including 15116066, 15136225, and many others listed in the description. As long as your vehicle is on the compatibility list, this module will function correctly after the cloning service.