Restore Full Electrical Function to Your GM Van
Are you battling frustrating electrical gremlins in your Chevrolet Express or GMC Savana van? Issues like malfunctioning lights, unresponsive power windows, erratic HVAC controls, or a persistent airbag light often point to a single culprit: a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics. When it fails, it can cause a wide range of seemingly unrelated problems. This OEM-quality replacement BCM, part number 15198116, is the definitive solution to restore your van’s reliability and functionality.
Diagnosing and Solving with a 2004-2007 Express 1500 BCM
A faulty BCM can make your vehicle feel unpredictable and unsafe. Recognizing the signs is the first step toward a permanent fix. If you’re experiencing any of the issues below, it’s highly likely your BCM is the component that needs attention. This module is pre-programmed to your vehicle’s specific VIN, ensuring it works seamlessly right out of the box without requiring expensive dealership programming. It’s a true plug-and-play repair.
Common Symptoms of a Failing BCM
- ✔ Unresponsive or intermittent HVAC and climate controls.
- ✔ Airbag warning light stays on, often with a B1001 diagnostic trouble code.
- ✔ Power windows, door locks, or exterior/interior lights not working correctly.
- ✔ Vehicle security system malfunctions, leading to no-start conditions.
- ✔ Strange grounding issues or a cluster of unrelated electrical problems.
- ✔ Communication errors with other vehicle modules.
Installation and Post-Install Considerations
Installation is straightforward. On the 2004-2007 Express and Savana vans, the BCM is typically located in the center of the dash. Always disconnect the battery before swapping the module. Once installed, most functions will be immediately restored. However, in some cases, additional steps may be needed:
- Airbag System Sync: If the airbag light remains on, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure with a professional scan tool.
- Brake Sensor Relearn: A brake pedal position sensor relearn might be necessary to ensure proper brake light and stability control operation.
This part requires no core return, so you can keep your old module without any hassle or extra charges. This replacement is a direct interchange for part numbers 15116066, 15136225, 15198116, and others, ensuring wide compatibility across the GM truck and van platform.
Frequently Asked Questions
Is this BCM ready to install right out of the box?
Yes. We pre-program the module to your vehicle’s VIN before shipping. This ensures it is a plug-and-play installation with no need for a trip to the dealership for additional programming.
Where is the BCM located on my 2004-2007 Express Van?
On the Express and Savana vans from this era, the Body Control Module is located in the center of the dashboard, typically accessible from below.
What if my airbag light is on after I install the new BCM?
If the airbag light is illuminated after installation, it means the new BCM needs to be synced with the airbag system’s SDM. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Will this fix my intermittent power window and lock problems?
Yes, faulty power windows and locks are among the most common symptoms of a failing BCM. Replacing it with this programmed unit is the correct fix for these issues.
Do I have to send my old BCM back?
No, there is no core charge for this part. You can keep your old module without any penalty.
Is this compatible with other GM trucks and SUVs?
Yes, this BCM is compatible with a wide range of 2002-2007 GM vehicles, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, and Hummer H2. Please verify the part number for your specific application.