Restore Your Van’s Electrical System with a VIN-Programmed BCM
Are you dealing with baffling electrical issues in your 2003-2007 Chevy Express or GMC Savana van? One minute the power locks work, the next they don’t. The interior lights have a mind of their own, and a pesky “Security” light keeps flashing on the dash. These aren’t separate problems; they’re classic symptoms of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause widespread and frustrating issues. This is the reliable, straightforward solution to get your workhorse back in dependable condition.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the biggest hassle out of the repair by programming the module to your van’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership and no special programming tools required on your end. Simply provide your VIN at checkout, and we’ll handle the rest, loading it with the latest GM software updates for optimal performance. This ensures seamless communication between the BCM and your vehicle’s other systems right out of the box.
I had a 2006 Express 1500 work van come into my bay that was a real head-scratcher for the owner. The complaint was an intermittent no-start, but the battery and starter tested fine. On top of that, the driver’s power window wouldn’t work, and the radio would sometimes stay on after the key was removed. The owner had already replaced the battery twice. After checking the network, I saw multiple communication codes pointing to the BCM. These modules, especially on high-mileage work vans, often fail from years of thermal stress and vibration. Swapping in a VIN-programmed BCM like this one solved all three issues at once. It’s a perfect example of how one failing component can create a cascade of seemingly unrelated electrical gremlins.
Common Signs of a Failing BCM
If your GM truck or van is experiencing these issues, a faulty BCM is the likely culprit. A failing module can disrupt communication between various electronic components, leading to unpredictable behavior. Look out for:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The vehicle’s security system acting erratically or preventing the engine from starting (flashing security light).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Inconsistent windshield wiper operation.
- ✔ Communication error codes stored in the system (such as U-series codes).
A Straightforward Guide to Installation
For Chevy Express and GMC Savana vans, the BCM is located behind the center of the dashboard. While professional installation is always an option, a confident DIYer can complete this job. Always consult a service manual for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove the dash trim panels around the center console and radio to gain access to the BCM. It’s typically mounted to a bracket in this area.
- Disconnect and Remove: Unplug the several multi-pin electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM onto the bracket and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- Reassemble and Reconnect: Reinstall the dash trim panels you removed. Reconnect the negative battery terminal.
- Perform Final Checks: Start the vehicle and test all body functions—power windows, locks, lights, wipers, and radio—to ensure everything is operating correctly.
Post-Installation Procedures
In some cases, additional steps with a diagnostic tool may be needed:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required to sync the systems.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn might be necessary for correct brake light and traction control function.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following models and options:
- Chevy Express / GMC Savana 1500/2500/3500 Vans (2003-2007): Body Control (BCM); located in the center dash.
- Chevy Silverado / GMC Sierra 1500/2500/3500 Pickups (2003-2007 Classic): Body Control (BCM); located under the steering column, excluding Crew Cab models.
- Chevy SSR (2003-2006): Body Control (BCM).
Please verify your part number and vehicle options to ensure proper fitment.
Frequently Asked Questions
Why do you need my VIN?
We require your Vehicle Identification Number (VIN) to program the BCM with the correct software and vehicle-specific options from GM. This ensures the module works seamlessly with your truck or van right out of the box, eliminating the need for a dealership visit.
Is this a plug-and-play part?
Yes, because we program it to your VIN before shipping, it is designed to be a plug-and-play installation for most vehicles. In some rare cases, as noted above, a relearn procedure for the airbag or brake pedal sensor may be required.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module without any extra fees or hassle.
What if the airbag light comes on after I install it?
If the airbag light is on, it means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a mechanic with a professional-grade diagnostic tool.
Where is the BCM located on my 2005 Express Van?
On 2003-2007 Express and Savana vans, the Body Control Module is located behind the dashboard trim in the center of the vehicle, often near the radio and climate controls.