Restore Full Control Over Your Truck’s Electronics
Are you battling bizarre electrical issues in your GMC Sierra or other GM truck? One minute the A/C works, the next it doesn’t. The radio cuts out, power windows have a mind of their own, or worse, you’re staring at a persistent airbag light. As a technician with over two decades of experience under the hood, I’ve seen these exact frustrations hundreds of times. The culprit is almost always a failing Body Control Module (BCM)—the central command center for your vehicle’s body electronics. This module, part number 15926094, is the direct-fit solution for your 2011 Sierra Denali 3500 BCM and a wide range of other GM vehicles.
Case Study: The Ghost in the Machine
I remember a 2011 Sierra 3500 that came into my bay with a laundry list of intermittent problems. The owner was convinced his truck was possessed. The dome lights would flicker, the horn would sound randomly, and the security light kept him from starting the engine. A scan showed a network of communication codes, but the key was a DTC B1001. After confirming the main power and ground circuits to the BCM were solid—a critical first step many people miss—we identified the BCM itself as the point of failure. By providing a cloned module, we had him back on the road in under an hour, with no need for a costly trip to the dealer for programming. It’s a textbook example of how a failing 2011 Sierra Denali 3500 BCM can cause system-wide chaos.
Is Your GM Truck Showing These Symptoms?
- ✔ Airbag warning light is on, often with a DTC B1001 (Setup SDM Primary Key in BCM) code stored.
- ✔ Power windows, door locks, or exterior lights operate intermittently or not at all.
- ✔ The HVAC system is unresponsive, or the blower motor works sporadically.
- ✔ Your vehicle’s security system is malfunctioning, leading to no-start or stalling conditions.
- ✔ Unpredictable electrical behavior, such as wipers turning on by themselves or gauges acting erratically.
- ✔ A host of communication (U-codes) or body-related (B-codes) diagnostic trouble codes.
How Our Cloning Service Makes This a True Plug-and-Play Fix
Forget about dealership appointments and programming fees. Our unique cloning service is designed for both DIYers and professional mechanics who demand efficiency. Simply send us your original Body Control Module. We will professionally transfer all the critical data—including your vehicle’s specific VIN, security keys, and option content—to this replacement unit. This process ensures seamless communication with the other modules in your truck, like the Engine Control Module (ECM) and Supplemental Inflatable Restraint (SIR) module. The result is a part that is 100% ready for installation right out of the box. And don’t worry about a core charge; we always return your original module with your newly programmed replacement.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work on any electronic components.
- ✔ Locate the BCM: On most compatible GM trucks and SUVs, the BCM 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 must be depressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- ✔ Install the New Module: Seat the cloned BCM into the mounting bracket and securely plug in all the 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 body functions: lights, wipers, windows, door locks, and HVAC to confirm the repair.
- ✔ Post-Installation Checks: In some cases, a relearn procedure may be needed. If the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. A ‘Brake Pedal Position Relearn’ might also be necessary for proper brake light and stability control function.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct replacement for part number 15926094 and other interchangeable numbers across a wide range of 2007-2013 General Motors vehicles. While it fits many models, please verify your part number before ordering. Key compatible models include:
- ✔ Chevrolet Silverado 1500 / 2500 / 3500
- ✔ GMC Sierra 1500 / 2500 / 3500 (including Denali)
- ✔ Chevrolet Tahoe & Suburban
- ✔ GMC Yukon & Yukon XL
- ✔ Cadillac Escalade, ESV, & EXT
- ✔ Chevrolet Avalanche
This part is interchangeable with the following part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591.
Frequently Asked Questions
What exactly is a cloning service?
Cloning is a process where we transfer the complete software and vehicle-specific data (like the VIN and security information) from your original BCM to the replacement unit. This makes the new module an exact electronic copy of the old one, eliminating the need for any additional programming.
Do I need special tools for the installation?
The physical installation typically only requires basic hand tools to remove a dash panel. However, if your airbag light remains on after installation, a professional-grade scan tool is necessary to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules.
Is there a core charge or do I need to send my old part back?
There is no core charge. However, you must send us your original BCM first so we can perform the cloning service. We will return your original module to you along with the newly programmed replacement.
Will this fix my airbag light with code B1001?
A faulty BCM is a very common cause for the B1001 code. Replacing it with our cloned module should resolve the root cause. If the light stays on after install, the simple ‘SDM Primary Key’ relearn procedure with a scan tool will complete the fix by re-establishing the security handshake between the modules.
How do I know if my BCM is actually the problem?
Diagnosing a BCM requires checking for multiple, unrelated electrical failures (e.g., windows and wipers failing at the same time), scanning for B-series or U-series codes, and verifying power and ground signals to the module. If you’re seeing several of the symptoms listed above, the BCM is the most likely culprit.