Restore Your Truck’s Electrical System and Get Back to Work
Is your GMC Sierra 3500 suffering from bizarre electrical issues that are costing you time and money? Flickering lights, unresponsive power windows, a dead HVAC system, or random warning lights are all classic signs of a failing Body Control Module (BCM). Don’t let these frustrating problems keep your work truck off the road. This OEM-quality, VIN-programmed Body Control Module is the direct, reliable solution to restore full functionality and confidence in your vehicle. It arrives ready for a simple plug-and-play installation, getting you back in business without an expensive trip to the dealership.
Common Symptoms & Your Solution
A faulty BCM is the hidden culprit behind many hard-to-diagnose electrical gremlins. If you’re experiencing any of the following, this module is the definitive fix:
- Intermittent or completely dead HVAC and blower motor controls.
- Power windows, door locks, or exterior/interior lights that work sporadically or not at all.
- An airbag warning light that won’t turn off, often with DTC B1001.
- Strange security system behavior, stalling, or misfires.
- A dashboard lit up with various body-related Diagnostic Trouble Codes (DTCs).
Instead of spending hours chasing wires, solve the problem at its source. This programmed 25971917 BCM is engineered to seamlessly integrate with your truck’s systems and eliminate these issues for good.
Features & Benefits
- ✔ Plug & Play Installation: We pre-program this module to your truck’s specific VIN number. This eliminates the need for expensive dealership tools or programming, allowing for a quick installation that takes just minutes.
- ✔ Restores Full Functionality: Regain complete and reliable control over your vehicle’s critical body electronics, from the power locks and windows to the climate control and security system.
- ✔ Solves Annoying Electrical Bugs: Put an end to flickering lights, random warning indicators, and other phantom electrical problems by replacing the central processing unit responsible for them.
- ✔ OEM-Grade Quality: Built to meet or exceed original equipment standards, ensuring dependable performance and longevity, whether you’re on the job site or the open highway.
- ✔ No Core Charge: We don’t require you to send your old, faulty part back. This saves you the time, hassle, and expense of dealing with a core return.
- ✔ Guaranteed Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Technician’s Insight
“Before you condemn your old BCM, do a quick ‘wiggle test’ on the main ground cable connection at the frame and the engine block. On these GMT900 trucks, a loose or corroded ground can cause voltage drops that mimic BCM failure. If your grounds are clean and tight and the problems persist, replacing the BCM is the next logical step. Installing a pre-programmed unit like this one is the fastest way to get a definitive repair and avoid a costly diagnostic bill at a shop.”
By providing us with your vehicle’s VIN during checkout, you ensure that the programmed 25971917 BCM you receive is a perfect match, ready to restore your truck to its factory-perfect working condition. It’s the smart, efficient repair for the professional who relies on their vehicle every single day.
Frequently Asked Questions
What does a Body Control Module (BCM) actually do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, door locks, interior and exterior lighting, wipers, the security system, and the HVAC climate control system. When it fails, these systems can become erratic or stop working altogether.
Why is VIN programming so important for this part?
The BCM is coded specifically to your vehicle’s options and security system from the factory. A non-programmed module from another vehicle will not work correctly and can even prevent the truck from starting. Our VIN programming service ensures the module is a 100% compatible, plug-and-play component, saving you a mandatory and expensive trip to the dealership for calibration.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a straightforward job. The BCM is typically located under the driver’s side dashboard, near the steering column. The physical swap usually takes less than 15 minutes. Because our module comes pre-programmed, there are no complex computer procedures required for the basic installation.
My airbag light is on. Will this BCM fix it?
A faulty BCM can often cause a false airbag light with code B1001. Replacing it with this programmed 25971917 BCM should resolve the root cause. However, in some cases, a post-install procedure called ‘Setup SDM Primary Key’ must be performed with a high-end scan tool to sync the new BCM with the airbag system and clear the light.
What if I still have issues after installation?
First, double-check all connections and ensure the battery is fully charged. Also, inspect the main vehicle ground connections for corrosion or looseness, as this can cause similar issues. If problems persist, a brake pedal position relearn may be needed. Our support team is also available to help guide you through any post-installation steps.