Restore Full Electrical Control to Your GM Vehicle
Are you battling bizarre electrical issues in your GMC Savana 3500 Van? Flickering lights, unresponsive power windows, a malfunctioning security system, or an intermittent HVAC system are all classic signs of a failing Body Control Module (BCM). This vital component is the central nervous system for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and unpredictable problems. This OEM-quality BCM, part number 15136877, is the definitive solution, pre-programmed to your vehicle’s VIN for a seamless, plug-and-play installation.
Diagnosing and Solving with a 2004-2007 Savana 3500 BCM
A faulty BCM doesn’t just affect convenience features; it can impact vehicle security and operation. Ignoring the symptoms can lead to no-start conditions or leave you stranded. This replacement module is engineered to restore the precise factory-level control your vehicle was built with, eliminating the guesswork and providing a lasting repair.
Common Symptoms of BCM Failure
- ✔ Intermittent or non-working interior and exterior lights.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ HVAC and climate control blower motor issues.
- ✔ Airbag warning light illumination, often with DTC B1001.
- ✔ Security system faults, including false alarms or engine immobilization.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ A host of communication-related Diagnostic Trouble Codes (DTCs).
The Plug-and-Play Advantage
The biggest hurdle in BCM replacement has always been the need for expensive dealership programming. We eliminate that step. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates specific to your van. This ensures that all systems communicate correctly right out of the box. No extra tools, no dealer appointments, and no hidden fees.
Installation and Post-Install Notes
Installation is straightforward. In most Savana and Express vans, the BCM is located in the center of the dash. For trucks and SUVs, it’s typically found under the steering column. Always disconnect the battery before swapping the module. After installation, some vehicles may require simple relearn procedures:
- Airbag System Sync: If the airbag light is on after install, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure proper brake light and traction control function.
This module is a direct replacement for multiple part numbers, including 15116066, 15136225, 15198116, and more, ensuring wide compatibility across the GM family of trucks, vans, and SUVs from 2002-2007.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, wipers, the security system, and the HVAC system.
Do I need to have this BCM programmed by a dealer?
No. This module comes fully pre-programmed to your vehicle’s VIN. This allows for a simple plug-and-play installation without requiring any additional dealership programming.
How difficult is it to install this 2004-2007 Savana 3500 BCM?
Installation is typically very easy and takes less than 15 minutes. It involves locating the old module (usually under the dash), disconnecting the battery, unplugging the electrical connectors, and swapping it with the new one.
Will this part fix my airbag light?
A faulty BCM can cause the airbag light to come on. Replacing it often resolves the issue, but sometimes a ‘Setup SDM Primary Key’ procedure is required with a pro-level scan tool to sync the new BCM with the airbag system.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module without any penalty.
What vehicles does this BCM fit?
While this page focuses on the Savana van, this BCM is compatible with a wide range of 2002-2007 GM vehicles, including Chevrolet Silverado, Tahoe, Suburban, Express; GMC Sierra, Yukon, Savana; Cadillac Escalade; and Hummer H2. Please verify the part number for your specific vehicle.