Solve Your Truck’s Electrical Headaches for Good
Are you chasing down frustrating electrical gremlins in your 2013 Chevrolet Silverado 3500 or another GM truck? When your power windows, door locks, or HVAC system have a mind of their own, the Body Control Module (BCM) is often the culprit. This isn’t just an inconvenience; it can affect vehicle security and drivability. This module, part number 25823559, is the central command for your truck’s body electronics, and when it fails, it can cause a cascade of confusing problems. We offer a reliable, direct-fit solution to restore full functionality and peace of mind.
Our unique Cloning Service makes this repair easier than ever. Simply send us your original BCM, and we will transfer all the vital vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. The result is a truly plug-and-play module that requires no expensive trip to the dealership for programming. It arrives at your door ready for immediate installation, pre-configured to work seamlessly with your truck’s existing systems.
A Technician’s Notebook: The Case of the Haunted Silverado
I remember a 2011 Silverado 2500 that came into my bay last winter. The owner was at his wit’s end. The radio would turn on and off, the dome light flickered randomly, and the security light would stay on, sometimes preventing the truck from starting. He’d already replaced the battery and checked the alternator. After hooking up my scanner, I saw a dozen communication codes pointing to the BCM. A quick check of the main ground points confirmed they were solid. The BCM itself was the issue. By providing a cloned module, we had him back on the road in an afternoon, saving him hundreds compared to the dealer’s quote for a new BCM and programming.
Is Your Truck Showing These Signs of BCM Failure?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is your likely solution:
- âś” Intermittent or non-functional power windows, door locks, or interior/exterior lights.
- âś” HVAC system problems, such as the blower motor not working or temperature controls failing.
- âś” An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- âś” Vehicle security system acting up, leading to no-start conditions or false alarms.
- âś” Unexplained battery drain or communication errors between modules (U-codes).
- âś” Wipers operating erratically or not at all.
A Straightforward Guide to BCM Installation
This repair is one of the easier ones you can do. With our cloning service, you avoid all the programming headaches. The entire process takes just a few minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most GM trucks and SUVs, the Body Control Module is located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, remove any bolts or clips holding it in place and take out the module.
- Install the New Module: Seat the replacement BCM in the mounting bracket and plug in the electrical connectors until they click securely into place.
- Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
- Post-Install Check: In some cases, an airbag light may persist. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. A ‘Brake Pedal Position Relearn’ may also be needed on certain models.
Verified Vehicle Compatibility
This module is a direct replacement for part number 25823559 and is interchangeable with a wide range of other part numbers. It fits numerous 2007-2013 General Motors vehicles. Please verify your part number before ordering.
- Chevrolet Avalanche: 2007-2011
- Chevrolet Silverado 1500/2500/3500: 2007-2013
- Chevrolet Suburban 1500/2500: 2007-2011
- Chevrolet Tahoe: 2007-2011
- Cadillac Escalade / ESV / EXT: 2007-2011
- GMC Sierra 1500/2500/3500: 2007-2013
- GMC Sierra Denali: 2007-2013
- GMC Yukon / XL: 2007-2011
This part is also a direct replacement for the following part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591.
Frequently Asked Questions
What is a BCM Cloning Service?
Our Cloning Service is a process where we transfer the exact configuration, security data, and VIN-specific information from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your vehicle, eliminating the need for costly and time-consuming dealership programming.
Do I need any special tools for installation?
Basic hand tools are all that’s needed for the physical swap. However, if your airbag light remains on after installation, a professional-grade scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the airbag system.
What happens to my old BCM?
We always return your original module along with the newly programmed replacement. There is no core charge, and you can keep your old part. We only need it to perform the cloning service.
How can I be sure the BCM is the problem?
While the symptoms listed are strong indicators, the best way to be certain is with a proper diagnosis using a scan tool that can communicate with the Body Control Module. Checking for specific BCM-related DTCs (like B1001) and communication errors can confirm the failure. Always check your battery and ground connections first.
Is this part covered by a warranty?
Yes, this BCM comes with a one-year warranty, giving you confidence in the quality and reliability of your repair.