Restore Control Over Your Vehicle’s Electronics
If you’re dealing with bizarre electrical problems in your 2003-2007 GMC Savana or other GM truck, you know the frustration. Lights that flicker, power windows with a mind of their own, a security system that won’t let you start the engine—these aren’t just annoyances; they can bring your workday or family trip to a halt. The Body Control Module, or BCM, is the electronic brain behind these functions. When it starts to fail, it can create a cascade of confusing symptoms that are a nightmare to diagnose. In my 20+ years in the shop, I’ve seen technicians waste hours and customers waste money chasing ghosts in the wiring, only to find the BCM was the culprit all along.
This isn’t just a replacement part; it’s a direct solution. We take a reliable Body Control Module, compatible with part number 15136224, and program it specifically to your vehicle’s VIN. This means it arrives at your door with the latest GM software updates already installed, ready for a straightforward installation. You get to skip the expensive trip to the dealership for programming, saving you time and money. This is the definitive fix for restoring the comfort and convenience features you rely on every day.
I remember a 2006 Silverado work truck that came into my bay with a list of complaints that made no sense together. The radio wouldn’t turn off even with the key out, the dome light worked intermittently, and the driver’s power window was dead. The owner had already replaced the window motor and the radio fuse. My initial checks on wiring and grounds came up clean. This is a classic BCM failure scenario. These modules manage so many unrelated systems that when they fail internally, the symptoms look random. After installing a VIN-programmed Savana 1500 BCM (the same unit fits many of these trucks), every single issue was resolved instantly. It’s a reminder that sometimes the most complex problems have a single, central solution.
Is Your GM Vehicle Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft light is illuminated, possibly causing a no-start condition.
- ✔ The radio or infotainment system behaves strangely (e.g., won’t turn off).
- ✔ Intermittent windshield wiper operation.
- ✔ Communication error codes, such as U0140, stored in the vehicle’s computer system.
A Straightforward Guide to Installation
For the Savana and Express vans, the BCM is located in the center of the dash. While professional installation is always an option, a confident DIYer can handle this job. Always consult a service manual for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge.
- Access the Module: On Savana/Express vans, you’ll need to remove the necessary dash trim panels to access the BCM, which is typically mounted in the center stack area. For trucks, it’s usually under the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old module and remove it.
- Install the New BCM: Mount your new, pre-programmed module in the same location and securely reconnect all electrical connectors.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Final Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
Important Post-Installation Notes
While our VIN programming handles the heavy lifting, some GM vehicles may require a final handshake between modules. 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’ might be necessary for proper brake light and traction control function. These are standard procedures and do not indicate a problem with the module itself.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15136224 and other interchangeable numbers. It is guaranteed to fit the following GM models and configurations:
- Chevrolet Express 1500/2500/3500 Van: 2003-2007
- Chevrolet Silverado 1500/2500/3500 Pickup: 2003-2007 (Classic Body Style)
- Chevrolet SSR: 2003-2006
- GMC Savana 1500/2500/3500 Van: 2003-2007
- GMC Sierra 1500/2500/3500 Pickup: 2003-2007 (Classic Body Style)
Note: Please review the detailed fitment list at the top of the page to confirm compatibility with your specific options (e.g., transmission type, cab configuration).
Frequently Asked Questions
Do I need to program or flash this BCM?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s 17-digit VIN during or after checkout, and it will arrive ready to install.
Where is the BCM located on my 2005 Savana 1500 Van?
On the 2003-2007 Savana and Express vans, the Body Control Module is located inside the dashboard, in the center stack area, often near the radio.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module, so you don’t have to worry about the cost or hassle of shipping it back.
What if my airbag light turns on after installation?
This is uncommon but can happen. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fix the ‘Service Theft System’ message on my dash?
In most cases, yes. The BCM is a critical part of the Passlock and Passkey anti-theft systems. A failing BCM is a very common cause of security-related warnings and no-start problems.
Which part numbers does this module replace?
This module is a direct replacement for several part numbers, including 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.