Is your 2004-2007 Chevrolet Express 3500 Van plagued by baffling electrical problems? Intermittent wipers, flickering lights, or a dead instrument cluster can bring your work to a halt. These are classic signs of a failing Body Control Module (BCM), the electronic nerve center of your van’s comfort and security features. Instead of dealing with costly dealership programming and vehicle downtime, our professional cloning service provides a direct, plug-and-play solution. We transfer all the critical data from your original module to this replacement unit, ensuring it works perfectly with your van’s specific options right out of the box.
This service is designed for the hardworking van owner and the professional mechanic who needs a reliable, fast fix. A faulty BCM can be a nightmare to diagnose, often throwing a mix of communication and body-related trouble codes. By choosing our cloning service for your 2004-2007 Express 3500 BCM, you are not just buying a part; you are getting a guaranteed fix that preserves your vehicle’s original configuration, from key fob programming to specific RPO codes. This eliminates the need for expensive scan tools or a trip to the dealer for post-installation programming.
Case Study: A Tricky Diagnosis
A local contractor brought in his ’06 Express 3500 work van with a frustrating list of complaints: the radio would turn on and off by itself, the power locks worked only sometimes, and worst of all, the battery would be dead every other morning. He’d already replaced the battery and alternator. After hooking up my scanner, I saw a handful of ‘U’ (communication) codes pointing to a network issue. In my 20+ years of experience, these ghost-like electrical problems on GM vans almost always trace back to a failing BCM. The internal relays and processors wear out, causing shorts and data corruption. We performed our cloning service on a replacement 2004-2007 Express 3500 BCM, and he was back on the road the next day with all issues resolved. It’s a common failure, but one with a straightforward solution.
Is Your Express Van Showing These Symptoms?
- ✔️ Erratic or non-functional interior and exterior lights.
- ✔️ Power windows, door locks, or mirrors not responding.
- ✔️ HVAC blower motor or climate controls working intermittently or not at all.
- ✔️ Airbag warning light illuminated, often with a DTC like B1001.
- ✔️ Vehicle security system acting up, causing no-start or crank-no-start conditions.
- ✔️ Unexplained parasitic battery drain that kills the battery overnight.
A Straightforward Guide to BCM Replacement
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the Module: In the Express Van, the BCM is typically located in the center of the dashboard, often behind the lower trim panel or glove box area.
- ✔ Remove and Replace: Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Unbolt the old BCM, install the new one, and securely reconnect all wiring harnesses.
- ✔ Power Up: Reconnect the battery terminal. Start the vehicle and test all functions—lights, wipers, locks, windows, and HVAC—to confirm the repair.
Post-Installation Notes
Our cloning service makes this a simple swap. However, in some cases, additional steps may be needed:
- Airbag System Sync: If your airbag light is on after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require this procedure to ensure proper brake light and traction control operation.
- Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part number 15194170 and other interchangeable numbers. While this page is focused on the 2004-2007 Express 3500 BCM, it is also compatible with a wide range of GM trucks and SUVs. Please verify your part number and check the list below.
Interchangeable Part Numbers: 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 10367690, 15064149.
Fits models including: Chevrolet Avalanche, Silverado, Suburban, Tahoe, Express Van; GMC Sierra, Yukon, Savana Van; Cadillac Escalade; Hummer H2 from 2002-2007 (check specific options in the fitment chart).
Frequently Asked Questions
How does the cloning service work?
You send us your original Body Control Module. Our technicians use specialized equipment to read all the vehicle-specific data—including VIN, mileage, key information, and RPO codes—and flash it directly onto the replacement unit. This makes the new module an exact electronic copy of your old one.
Do I need to get the new module programmed by a dealer?
No. The cloning service completely eliminates the need for any additional programming. It will be ready for plug-and-play installation as soon as you receive it.
What happens to my old BCM?
Your original module is always returned to you along with the newly programmed replacement. We do not keep cores, so you can have it for your records or dispose of it as you see fit.
Why is my airbag light on after installing the BCM?
The BCM and the Sensing and Diagnostic Module (SDM) for the airbag system are linked. If the airbag light appears, it means they need to be re-synchronized. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Will this fix a parasitic battery drain?
A faulty BCM is a very common cause of parasitic drain in these GM vehicles. If the module fails to go into ‘sleep’ mode, it will continuously draw power. Replacing it with our cloned unit is a highly effective way to solve this specific problem.