Restore Full Functionality to Your GM Truck with a Programmed BCM
If you’re dealing with baffling electrical problems in your 2013 GMC Sierra 3500, a failing Body Control Module (BCM) is often the culprit. As the central command for your truck’s body electronics, a faulty BCM can cause a cascade of issues that are frustrating for any owner. This replacement module, part number 15284816, is the definitive solution. We utilize a professional cloning service, transferring the exact data from your original unit to this replacement. This ensures a seamless, plug-and-play installation that preserves all your vehicle’s specific settings without a costly trip to the dealership.
A Technician’s Notebook: The Grounding Gremlin
A customer brought in a 2011 Silverado with a classic case of BCM failure symptoms: intermittent wipers, flickering dash lights, and a security light that wouldn’t turn off. They had already replaced the battery and alternator. After plugging in my scanner, I saw multiple communication DTCs. Before condemning the BCM, I always check the main BCM ground point located on the driver-side A-pillar, near the emergency brake pedal. Sure enough, it was loose and corroded. In my 20+ years, I’ve seen this simple issue misdiagnosed hundreds of times. Pro Tip: When you replace your 2013 Sierra 3500 Body Control Module, always clean and secure the ground connection to prevent future headaches.
Is Your Truck Showing These Symptoms?
- ✔ Your power windows, door locks, or mirrors are working intermittently or not at all.
- ✔ The HVAC system is acting up, with the blower motor cutting out or controls being unresponsive.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔ You’re experiencing strange security system behavior, including no-start conditions or random alarm activation.
- ✔ Headlights, taillights, or interior dome lights flicker or refuse to turn on or off.
- ✔ The instrument cluster displays erratic warnings or loses communication.
A Straightforward Guide to BCM Replacement
Installing your new BCM is a quick job that most DIYers can handle in under 10 minutes. Our cloning service makes it a true plug-and-play process.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On most GM trucks of this era, the BCM is located under the driver-side 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, unclip the module from its mounting bracket.
- Install the New Module: Snap the new, cloned BCM into the mounting bracket and securely reconnect all electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, wipers, windows, locks, and HVAC to confirm the repair.
Post-Installation Note: In some cases, particularly if you had an airbag light, a professional scan tool may be needed to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems. A Brake Pedal Position relearn may also be required on certain models. Always consult a factory service manual for vehicle-specific procedures.
Will This Fit My Truck or SUV?
This BCM is a direct replacement for a wide range of General Motors vehicles and is interchangeable with numerous part numbers, including 25844480, 25835966, 15263363, and 15878753. It is guaranteed to fit the following models:
CADILLAC ESCALADE, ESV, EXT 07-11
CHEVROLET SILVERADO 1500/2500/3500 PICKUP 07-13
CHEVROLET SUBURBAN 1500/2500 07-11
CHEVROLET TAHOE 07-11
GMC SIERRA 1500/2500/3500 PICKUP 07-13
GMC SIERRA DENALI 1500/2500/3500 07-13
GMC YUKON & YUKON XL 1500/2500 07-11
Note: For 2007 models, this fits the ‘New Style’ with the smooth door skin. For some 2010 and 2013 models, please verify ID 25835966.
Frequently Asked Questions About This BCM
Frequently Asked Questions
How does the Cloning Service work?
You send us your original BCM. We then read the critical vehicle-specific data (like VIN, mileage, and key data) and transfer it directly to your replacement module. This ensures 100% compatibility and avoids the need for expensive dealership programming.
Do I get my old module back?
Yes, absolutely. Your original module is always returned to you along with the newly programmed replacement unit. We do not keep your old part, and there is no core charge.
What if my airbag light is on after installation?
If the airbag light persists, it’s because the BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a technician with a professional-grade diagnostic tool.
Is this a reliable fix for my 2013 Sierra 3500 Body Control Module issues?
Yes. This module is built to meet or exceed OEM specifications and addresses the common failure points of the original design. When paired with our professional cloning service, it provides a dependable, long-term solution to restore your truck’s electrical systems.
What is the warranty on this part?
This Body Control Module comes with a one-year warranty, giving you peace of mind and confidence in your repair.