Restore Full Functionality to Your GM Vehicle
Are you chasing electrical gremlins in your work van or truck? Intermittent wipers, a possessed climate control system, or power locks with a mind of their own are classic signs of a failing Body Control Module (BCM). This module is the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and hard-to-diagnose issues. This replacement BCM, part number 15194170, is the definitive solution for your 2004-2007 Express 2500 BCM and a wide range of other GM vehicles.
What sets our service apart is the expert cloning process. We transfer the critical data from your original module directly to this replacement unit. This means the module arrives at your door ready for a true plug-and-play installation, with no need for an expensive trip to the dealership for programming. It’s the fastest, most reliable way to get your vehicle back to 100%.
Case Study: The Contractor’s Van
A 2006 Express 2500 came into the shop with a bizarre list of complaints. The radio would turn off, the dome light would flicker on bumps, and occasionally the security light would flash, preventing it from starting. The owner had already replaced the battery and checked the main grounds. After scanning, we found a slew of communication DTCs with the BCM. In my experience, these intermittent electrical faults on work vans are often caused by internal board failures within the BCM due to years of vibration and thermal cycles. We installed a cloned BCM, and every single issue was resolved instantly. The cloning service ensured all the van’s specific options worked perfectly without any further setup.
Is Your GM Vehicle Showing These Symptoms?
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows, door locks, or exterior lights are behaving erratically.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Your vehicle experiences a no-start condition due to a security system fault.
- ✔ The instrument cluster displays strange warnings or loses communication.
- ✔ Diagnostic scans reveal multiple body-related communication codes (U-codes).
A Straightforward Guide to Installation
Getting your van back in order is easier than you think. For most models, including the Express and Savana vans, this is a quick job that requires minimal tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the 2004-2007 Express 2500 Van, the BCM is typically found in the center of the dash area. On trucks like the Silverado or Sierra, it’s usually under the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, remove any bolts or clips holding the module in place.
- Install the New Module: Seat the new, cloned BCM in the same position and securely plug in all the connectors. You’ll hear a click as they lock.
- Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair.
Post-Installation Procedures
Our cloning service makes this a plug-and-play part, but some vehicle systems may require a handshake with the new module. If you see an airbag light, a professional scan tool is needed for the “Setup SDM Primary Key in BCM” procedure. Similarly, a brake pedal position relearn may be needed on some models. Always refer to a service manual for vehicle-specific requirements.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for numerous GM trucks and vans. It is interchangeable with part numbers 15116066, 15136225, 15198116, and 15194170. Please verify your part number and check the list below. This part fits models including:
- Chevrolet Express 1500/2500/3500 Van (2004-2007) – with commercial tradesman package (opt PRP)
- GMC Savana 1500/2500/3500 Van (2004-2007) – with commercial tradesman package (opt PRP)
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic) – Crew Cab models
- Chevrolet Avalanche, Suburban, Tahoe (2003-2006)
- GMC Yukon & Yukon XL (2003-2006)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM acts as the computer for your vehicle’s comfort and convenience features. It controls non-engine related functions like your lights, power windows and locks, wipers, security system, and climate controls.
Why is your cloning service better than just programming?
Cloning transfers 100% of your vehicle’s original data, including specific RPO codes and security information, to the new module. This makes it a true plug-and-play solution, avoiding the compatibility issues and extra costs associated with dealership programming.
Do I need to send my original BCM to you?
Yes. The cloning service requires your original module to read the data from it. We perform the service and ship both your original module and the newly cloned replacement back to you.
What tools will I need for the installation?
For most vehicles, you will only need basic hand tools, such as a socket set or a screwdriver, to access and remove the BCM. The installation itself is plug-in.
What if my airbag light is on after installation?
This is not uncommon. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a bi-directional scan tool to resolve this.