Tired of Chasing Electrical Gremlins in Your GM Van?
If you’re a GMC Savana or Chevy Express owner, you know these vans are workhorses. But when the Body Control Module (BCM) starts to fail, it can bring your operations to a grinding halt with some of the most frustrating and random electrical issues imaginable. One moment your A/C works, the next it’s dead. Your power locks might have a mind of their own, or worse, a security light prevents the van from starting, leaving you stranded. This isn’t just an inconvenience; it’s lost time and money.
This is the definitive, plug-and-play solution. We offer a high-quality replacement Body Control Module, part number 15198116, specifically for your 2004-2007 Savana 2500 Body Control Module needs. The best part? It arrives at your door pre-programmed to your vehicle’s exact VIN. This means no expensive trips to the dealership for programming. You can get your van back in service in minutes, right in your own driveway or shop.
Case Study: A Tricky Diagnosis
A customer brought in his ’06 Savana 2500 work van last month with a classic BCM failure story. The complaint was intermittent: the radio would cut out, the driver’s side power window wouldn’t work, and the airbag light was on. He’d already replaced the window motor and checked fuses, wasting a whole weekend. In the shop, my scan tool pulled a B1001 (Option Configuration Error) and several U-codes for lost communication. These network codes are a dead giveaway. Instead of spending hours tracing wires for a potential phantom short, we started with the central hub—the BCM. After installing one of our VIN-programmed modules, every single issue was resolved instantly. It’s a reminder that for these GMT800 platform vehicles, when multiple unrelated electronics act up, the BCM should be your first suspect.
Is Your Van Showing These Symptoms?
- ✔️ The HVAC blower motor works intermittently or not at all.
- ✔️ Power windows, door locks, or interior/exterior lights fail without warning.
- ✔️ The security system acts erratically, causing a no-start condition (theft light flashing).
- ✔️ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔️ You’re seeing multiple communication-related Diagnostic Trouble Codes (DTCs).
- ✔️ The vehicle has strange grounding problems that are difficult to trace.
A Straightforward Guide to Installation
For the GMC Savana and Chevy Express, this is one of the easiest module replacements you can do. The entire process typically takes less than 10 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: In the Savana/Express vans, the BCM is located in the center of the dashboard, usually accessible by removing a lower dash panel. It’s a black box with several large multi-pin connectors.
- Swap the Module: Carefully disconnect the electrical connectors. They have locking tabs, so be gentle. Unbolt or unclip the old module and set it aside. Mount the new module in its place.
- Reconnect and Power Up: Firmly plug all the electrical connectors into your new, pre-programmed BCM. Reconnect the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all functions: lights, wipers, locks, windows, and HVAC. Everything should now work correctly.
Important Final Steps for Full Functionality
After installing your new 2004-2007 Savana 2500 Body Control Module, two final procedures may be required to ensure 100% system integration, especially for clearing safety-related warnings:
- Airbag Light Reset: If the airbag light remains on, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This re-establishes communication between the BCM and the airbag system.
- Brake Pedal Position Sensor: Some vehicles may require the Brake Pedal Position Sensor to be recalibrated. This ensures the brake lights and stability control systems function as intended.
If you are unfamiliar with these procedures, we recommend consulting a professional technician or your vehicle’s service manual.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for a wide range of GM trucks, vans, and SUVs. It is interchangeable with part numbers 10383536, 15116066, 15136225, 15136877, 15198116, and more. While this page focuses on the Savana, it also fits the following models (please verify your specific options):
- GMC Savana / Chevrolet Express 1500, 2500, 3500 (2004-2007): w/commercial tradesman package (opt PRP)
- GMC Sierra / Chevrolet Silverado 1500, 2500, 3500 (2003-2007 Classic): Crew Cab models
- GMC Yukon, Yukon XL / Chevrolet Tahoe, Suburban (2003-2006)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
Do I need to take my van to the dealer after installing this?
No! This Body Control Module comes fully programmed to your vehicle’s VIN. This eliminates the need for dealership programming, saving you time and money. However, you may need a scan tool for post-install procedures like the SDM key setup to clear an airbag light.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, this is a very simple job. It’s typically located in the center dash on Savana vans and involves unplugging the old module and plugging in the new one. The entire process can be done in under 10 minutes.
What is a BCM and what does it do?
The BCM, or Body Control Module, is a computer in your vehicle that controls most of the non-engine related electronic functions. This includes power windows, locks, lights, wipers, the security system, and HVAC controls.
Will this fix my airbag light with code B1001?
Yes, a faulty BCM is a very common cause of a B1001 code. Replacing the BCM with our programmed unit will resolve the root cause. You will then need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a scan tool to clear the light.
Is there a core charge for my old part?
No, we do not require a core return. You can keep your old part, making the replacement process even more convenient and hassle-free.