Restore Your GM Van’s Brain and End Electrical Gremlins for Good
As a technician with over two decades of experience, I’ve seen firsthand the frustration a failing Body Control Module (BCM) can cause. Your 2003-2007 Express 1500 Van starts acting possessed—the dome lights stay on, the power locks have a mind of their own, or the security light flashes for no reason. These aren’t random quirks; they’re classic signs that the central command center for your vehicle’s body electronics is failing. This isn’t just an annoyance; it can affect vehicle security and safety systems. You need a reliable, direct-fit solution that works right out of the box.
This replacement BCM, part number 15194169, is the definitive fix for these widespread issues. We take the biggest headache out of the equation: programming. Forget expensive trips to the dealership and hours of lost time. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash the module with the latest GM software specific to your Express Van. This ensures all factory-installed options work seamlessly upon installation. It’s the closest you can get to a true plug-and-play repair for a complex electronic component.
From the Diagnostic Bay
I remember a 2006 Express work van that came into my shop with a bizarre complaint: the battery would be dead every morning. The owner had already replaced the battery and alternator. After checking for parasitic draw, I traced it to the BCM, which was failing to let the interior lighting circuit go to ‘sleep’. Water intrusion from a leaky windshield seal had corroded a section of the BCM’s circuit board—a very common issue on these vans. We installed a pre-programmed BCM just like this one, and the problem was solved instantly. This simple swap saved the owner from hundreds more in diagnostic fees and parts guesswork.
Common Signs of a Failing GM BCM
- ✔ Power windows or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The security or anti-theft system preventing the vehicle from starting (often indicated by a flashing security light).
- ✔ Erratic gauge cluster behavior or warning lights that have no apparent cause.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss with other modules, such as U-series codes (e.g., U0140 – Lost Communication With Body Control Module).
- ✔ Horn or radio malfunctions.
A Straightforward Guide to Installation
Installing your new 2003-2007 Express 1500 BCM is a manageable job for a confident DIYer. In Express and Savana vans, the module is typically located in the center of the dash, often behind the radio or climate control panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. A set of plastic trim removal tools is highly recommended to avoid scratching your interior.
- Disconnect and Remove: The BCM is held in by a few bolts or clips. Disconnect the electrical connectors—they have locking tabs that must be depressed—and remove the old module.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Reassemble your dash panels and reconnect the negative battery terminal.
- Final Checks: Start the vehicle and test all body functions: lights, locks, windows, radio, and wipers to ensure everything is working correctly. Note the post-installation procedures below.
Important Post-Installation Steps
While this BCM is programmed for your VIN, some vehicle systems may require a ‘handshake’ procedure after installation. This is normal. Key procedures include:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Disclaimer: Procedures can vary. Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Will This Fit My GM Truck or Van?
This BCM is a direct replacement for part number 15194169 and is interchangeable with part numbers 15167329, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It offers guaranteed fitment for a wide range of GM vehicles, including:
- Chevrolet Express 1500/2500/3500 Van (2003-2007)
- GMC Savana 1500/2500/3500 Van (2003-2007)
- Chevrolet Silverado 1500/2500/3500 Pickup (2003-2007 Classic)
- GMC Sierra 1500/2500/3500 Pickup (2003-2007 Classic)
- Chevrolet SSR (2003-2006)
Please verify your vehicle and options in the detailed fitment list to ensure perfect compatibility. This module is programmed for your specific VIN, eliminating compatibility guesswork.
Frequently Asked Questions
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Is this BCM truly plug-and-play?
It is pre-programmed to your VIN, which handles 99% of the setup. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which may require a scan tool.
What information do you need from me?
After you place your order, we will need the 17-digit Vehicle Identification Number (VIN) from your vehicle. This ensures we can program the BCM with the correct software and settings for your specific options.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of issues with the GM Passlock and Passkey anti-theft systems. Replacing it with a properly programmed module often resolves these problems.
Where is the BCM located on my 2005 Express Van?
On the 2003-2007 Express and Savana vans, the Body Control Module is typically located inside the dashboard, near the center stack area, often behind the radio.