Is Your GM Truck Plagued by Baffling Electrical Problems?
If you’re dealing with erratic lights, unresponsive power windows, a malfunctioning HVAC system, or a persistent airbag light in your 2003-2007 GM truck or SUV, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the electronic brain for your vehicle’s body accessories, and when it fails, it can cause a cascade of frustrating and seemingly unrelated issues. This OEM-quality replacement BCM, equivalent to part number 15136877, is the definitive solution to restore full electrical functionality to your vehicle.
Expert Pro Tip
Expert Pro Tip
Before you begin the installation, disconnect the negative battery terminal and wait for at least 10 minutes. This critical step not only prevents accidental electrical shorts but also helps clear any stored fault codes from the old module, allowing the newly installed BCM to integrate seamlessly with your vehicle’s systems.
Common Symptoms of a Failing GM BCM
- ✔ Intermittent or total loss of power windows, door locks, and interior or exterior lighting.
- ✔ HVAC system failures, such as a blower motor that won’t turn on or erratic temperature control.
- ✔ An illuminated airbag warning light, often accompanied by diagnostic trouble codes (DTCs) like B1001.
- ✔ Security system malfunctions, including no-start conditions where the engine cranks but won’t fire.
- ✔ Unpredictable behavior from windshield wipers or radio controls.
- ✔ A variety of communication-related DTCs stored in the vehicle’s computer.
Why Choose Our Programmed 2003-2007 Silverado 3500 BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program each module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This ensures 100% compatibility and means you can skip the expensive and time-consuming trip to the dealership for programming. Simply plug it in, and your truck’s essential features are restored. Built to strict OEM standards for durability and performance, this module is backed by a one-year warranty for your peace of mind. Best of all, there is no core charge, so you can keep your old part without any hassle.
Installation and Post-Install Considerations
Installation is a straightforward process for any DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. Once the new module is installed, some vehicles may require additional steps. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. In some cases, a ‘Brake Pedal Position Relearn’ may also be necessary to ensure proper brake light and traction control function. Always consult a factory service manual for procedures specific to your vehicle.
Frequently Asked Questions
Expert Pro Tip
Before you begin the installation, disconnect the negative battery terminal and wait for at least 10 minutes. This critical step not only prevents accidental electrical shorts but also helps clear any stored fault codes from the old module, allowing the newly installed BCM to integrate seamlessly with your vehicle’s systems.