Restore Full Electrical Function to Your GM Truck or SUV
Are you battling persistent electrical gremlins in your GMC Sierra Denali, Chevrolet Silverado, or Tahoe? A faulty Body Control Module (BCM) is often the culprit behind a frustrating array of issues, from malfunctioning lights and power windows to erratic HVAC behavior and security system alerts. This genuine OEM-quality BCM, part number 15901388 (interchangeable with 25844480 and others), is the definitive solution. It arrives pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and ensuring a seamless, plug-and-play installation.
Identifying a Failing 2007-2010 Sierra Denali BCM
The BCM is the central command center for your truck’s body electronics. When it begins to fail, it can create a cascade of seemingly unrelated problems. If you’re experiencing any of the symptoms below, a failing BCM is the likely cause. Replacing it with this pre-programmed unit restores the stable communication and power management your vehicle needs to operate correctly.
Common Symptoms and Key Benefits
- ✔ VIN-Programmed for Your Truck: Arrives ready to install with the latest GM software loaded for your specific vehicle. No dealer programming required.
- ✔ Fixes Widespread Electrical Issues: Solves problems with interior/exterior lights, power windows, door locks, wipers, and HVAC controls.
- ✔ Resolves Annoying Warning Lights: Clears false security system alerts and can address airbag warning lights (DTC B1001) with a simple post-install procedure if needed.
- ✔ Restores Vehicle Stability: Corrects issues like stalling, misfires, or grounding problems tied to faulty BCM communication.
- ✔ OEM-Quality and Reliability: Built to strict General Motors standards for long-lasting performance and backed by a one-year warranty.
- ✔ No Core Charge: A straightforward purchase without the hassle of returning your old, faulty part.
Installation and Post-Install Notes
Installing your new 2007-2010 Sierra Denali BCM is a simple process. The module is typically located under the driver-side dashboard, near the steering column. In most cases, it’s a direct swap that takes only a few minutes. However, be aware of two potential post-installation requirements. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, some models may require a Brake Pedal Position Sensor relearn. Always check for and repair any underlying grounding issues to ensure the longevity of your new module.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages and controls your vehicle’s non-engine related functions. This includes power windows, door locks, security system, interior and exterior lighting, climate controls, and wipers.
What does ‘VIN Programmed’ mean?
It means we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and the corresponding GM software onto the module before shipping. This makes it a true plug-and-play part, saving you a trip to the dealership for programming.
Is this BCM difficult to install?
No, installation is generally very simple. The BCM is located under the dashboard and can be swapped out in minutes with basic tools. No complex wiring is required.
Will I need a scan tool after installing this part?
In most cases, no. However, if your airbag warning light is on after installation, a professional scan tool will be needed to sync the new BCM with the airbag system (SDM). This is a simple procedure found in the BCM’s special functions menu.
Is this a new or used part?
This is a genuine, OEM-quality part that has been expertly programmed and tested to ensure it meets or exceeds original factory performance. It is backed by our one-year warranty.
This part looks the same, but the number is different. Will it fit?
Yes, this module is a direct replacement for numerous part numbers, including 25844480, 25835966, 15943678, 20939137, and many others listed in the description. As long as your vehicle is listed in the compatibility chart, this part will work.