Restore Full Electrical Control to Your GM Truck or SUV
Are you battling a storm of bizarre electrical problems in your truck? Flickering lights, unresponsive power windows, a temperamental security system, or an HVAC system with a mind of its own are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can create frustrating and difficult-to-diagnose issues. This OEM-quality GM BCM, part number 25971917, is the definitive solution to restore order and functionality to your vehicle.
Expert Pro Tip
Expert Pro Tip
Before condemning your BCM, always perform a thorough check of the main battery ground connections, especially the one from the battery to the chassis and the engine block. A loose or corroded ground can starve modules of proper voltage, mimicking BCM failure. A few minutes with a wrench can sometimes save you hundreds of dollars.
Is Your Vehicle Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your BCM is the culprit:
- ✔ Unpredictable power windows, door locks, or interior/exterior lights that work intermittently or not at all.
- ✔ HVAC system failures, such as a blower motor that won’t turn on, or climate controls that are unresponsive.
- ✔ An illuminated airbag warning light on the dash, often accompanied by diagnostic trouble code (DTC) B1001.
- ✔ Erratic security system behavior, leading to no-start conditions, random alarm activation, or stalling.
- ✔ A cluster of seemingly unrelated electrical issues that defy a simple diagnosis.
Why Choose Our Programmed Sierra Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and hassle out of the repair process. The key benefit is our professional VIN programming service. We flash the module with your vehicle’s specific VIN and the latest GM software updates before it ships. This ensures that it communicates perfectly with your truck’s other electronic systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Installation is straightforward for any DIY mechanic. The module is typically located under the driver’s side dashboard near the steering column and can be swapped in minutes. While the module is plug-and-play for most functions, please note that if you have an active airbag light, a post-installation procedure using a professional scan tool will be required to sync the new BCM with the airbag system (SDM). This is a security feature common to all new BCMs.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 15901388, 20939137, 20939138, and 22860591.
Don’t let electrical gremlins compromise your vehicle’s safety and convenience. Get the ultimate solution for your failing GMC Sierra Body Control Module and get your truck back to 100%.
Frequently Asked Questions
Expert Pro Tip
Before condemning your BCM, always perform a thorough check of the main battery ground connections, especially the one from the battery to the chassis and the engine block. A loose or corroded ground can starve modules of proper voltage, mimicking BCM failure. A few minutes with a wrench can sometimes save you hundreds of dollars.