Restore Your Van’s Electrical System with a Plug-and-Play Solution
Are you dealing with bizarre electrical problems in your GM truck or van? Flickering lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable. I’ve spent countless hours in the shop diagnosing these exact issues, and the solution is often simpler than you think.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We take the hassle out of the repair by pre-programming this BCM to your vehicle’s specific VIN. This means it arrives at your door loaded with the latest GM software updates, ready to be installed without requiring a trip to the dealership for expensive programming. This is the most direct way to solve those frustrating electrical gremlins and get your vehicle’s features working correctly again.
From the Diagnostic Bay: The Work Van’s Ghost
A contractor brought in his ’06 Savana 3500, complaining of a “ghost” in his van. The dome lights would stay on, draining the battery overnight, and the power door locks worked intermittently. He was losing work time and money. After checking the basics—fuses, relays, and grounds—my scan tool pointed to a communication breakdown with the BCM. Instead of a costly and time-consuming dealer visit, we ordered a VIN-programmed module. The swap took less than 30 minutes, and instantly, all the problems vanished. He was back on the job the same day. That’s the power of a direct-fit, pre-programmed solution.
Common Signs of a Failing BCM
If your vehicle is showing these symptoms, a failing BCM is the likely culprit. Replacing it with our programmed unit can restore full functionality.
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft light is illuminated, potentially causing a no-start condition.
- ✔ Dashboard gauges behaving erratically or not working.
- ✔ Horn activating unexpectedly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
A Straightforward Guide to Installation
For most Savana and Express vans, the BCM is located in the center of the dashboard. For trucks like the Silverado and Sierra, it’s typically found under the steering column. Always confirm the location for your specific model.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove any dash panels or trim necessary to gain access to the old BCM.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount the new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions—lights, windows, locks, etc.—to confirm the repair.
Important Post-Installation Notes
While this module is programmed for a direct installation, some GM vehicles may require a simple relearn procedure to sync all systems. This is standard for these platforms. Please note the following:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and traction control function.
- No Core Charge: We make it easy. There is no core charge on this part, so you can keep your old module without any hassle.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It fits a wide range of GM trucks and vans, 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 refer to the detailed fitment list at the top of the page to confirm compatibility with your specific year, model, and options.
Frequently Asked Questions
Do I need to program this 2003-2007 Savana 3500 BCM?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you a trip to the dealer. Just provide your VIN at checkout.
What does a Body Control Module (BCM) do?
The BCM is a computer that controls many of your vehicle’s non-engine related functions, such as power windows, door locks, interior and exterior lighting, the security system, and the horn.
Where is the BCM located on my 2005 Savana Van?
On most 2003-2007 GMC Savana and Chevrolet Express vans, the BCM is located behind the dashboard trim, in the center console area. For Silverado and Sierra pickups, it is typically found under the steering column.
Will this fix the flashing security light on my dashboard?
In many cases, yes. A faulty BCM is a very common cause of security system issues, including a flashing light and no-start conditions. This programmed module restores proper communication and function.
Is there a core charge for my old part?
No, there is absolutely no core charge. You are not required to send your old BCM back to us, which simplifies the process for you.
What if my airbag light comes on after installation?
This can happen on some models. It simply means the new BCM needs to be electronically introduced to the airbag module. A technician with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.