Is Your GM Truck Plagued by Baffling Electrical Problems?
If your 2007-2011 GMC Sierra 1500, or a similar GM truck or SUV, is experiencing a host of frustrating electrical issues, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central command center for your vehicle’s body electronics, and when it malfunctions, it can cause everything from flickering lights and non-responsive power windows to security system faults and even no-start conditions. This replacement BCM, part number 15901388 (interchangeable with 25844480 and others), is the definitive solution to restore your vehicle’s full functionality.
Expert Pro Tip
Expert Pro Tip
Before replacing your BCM, always perform a thorough check of the main ground connections, especially the primary ground strap from the engine to the chassis. A corroded or loose ground can cause many of the same symptoms as a faulty BCM and is a much simpler fix. Verifying grounds first can save you time and money.
Symptoms of a Failing Body Control Module
- ✔ Unresponsive or erratic power windows, door locks, and interior or exterior lights.
- ✔ HVAC system failures, such as a blower motor that won’t turn on or stays stuck on one speed.
- ✔ An illuminated airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ The security or anti-theft system acting up, potentially preventing the engine from starting.
- ✔ Intermittent stalling, misfires, or other strange engine behavior tied to electrical communication errors.
- ✔ A dashboard that looks like a Christmas tree, with multiple warning lights on at once.
The Plug-and-Play Solution: A Programmed Sierra 1500 Body Control Module
Don’t waste time and money at the dealership. We take the hassle out of the repair by pre-programming this Sierra 1500 Body Control Module to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that when the part arrives, it’s ready for a straightforward, plug-and-play installation. It communicates seamlessly with your truck’s other electronic systems, like the Engine Control Module (ECM) and Supplemental Inflatable Restraint (SIR) system, right out of the box. This module is built to meet or exceed original equipment standards, providing a dependable and lasting repair for your vehicle’s electrical nervous system.
Installation is simple for the average DIY mechanic, typically taking just a few minutes. The BCM is located under the driver’s side dashboard, near the steering column. While the initial installation is plug-and-play, please be aware of potential post-installation procedures. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Some models may also require a Brake Pedal Position Sensor relearn to ensure proper brake light and traction control operation.
Frequently Asked Questions
Expert Pro Tip
Before replacing your BCM, always perform a thorough check of the main ground connections, especially the primary ground strap from the engine to the chassis. A corroded or loose ground can cause many of the same symptoms as a faulty BCM and is a much simpler fix. Verifying grounds first can save you time and money.