Restore Full Functionality to Your GM Truck or SUV
Is your 2011 GMC Sierra Denali 1500 suffering from bizarre electrical issues? One moment the A/C works, the next it doesn’t. Your power windows have a mind of their own, or worse, a persistent airbag light is on your dash. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can wreak havoc. This replacement module, part number 15926094, is the definitive solution for restoring order and reliability to your vehicle.
This isn’t just a part; it’s a complete service. We perform a professional Cloning Service, transferring the critical data from your original module to this replacement unit. This ensures that all your vehicle’s specific settings and security information are preserved, making the installation process truly plug-and-play. You can bypass the costly and time-consuming trip to the dealership for programming. This is the same process we use in our own repair facility to get customers back on the road quickly and confidently.
Diagnosing a Faulty BCM: Common Red Flags
If you’re experiencing any of the following, a failing BCM is the likely culprit. Over my 20 years in diagnostics, these are the symptoms I see time and again with these specific GM platforms.
- ✔ Intermittent or non-functional power windows, door locks, and interior/exterior lighting.
- ✔ The HVAC system or blower motor operates erratically or not at all.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Vehicle security system malfunctions, leading to no-start or stalling conditions.
- ✔ Unexplained electrical glitches, communication errors with other modules, or poor grounding symptoms.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Sierra with a frustrating no-start condition. The security light was flashing, and the fuel pump wouldn’t prime. All signs pointed to a bad BCM. Before ordering a new one, I did my due diligence and checked the main BCM ground wire located on the A-pillar behind the driver’s side kick panel. Sure enough, it was loose and corroded. After cleaning the contact point and tightening the bolt, all issues were resolved. This is why I always tell my customers: when you replace your 2011 Sierra Denali BCM, take five extra minutes to inspect and clean that ground. It can save you from thinking your new part is faulty.
Your 5-Minute BCM Swap Guide
The physical installation is straightforward for any DIY enthusiast. The real work is in the data cloning, which we handle for you before shipping. Here’s how simple the swap is:
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the BCM: On most GM trucks and SUVs of this era, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Remove the Old Module: Carefully disconnect the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- Install the New Module: Seat your new, pre-programmed BCM into the mounting bracket and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC to confirm the repair is successful.
Post-Installation Note: In some cases, particularly if you had an airbag light, a ‘Setup SDM Primary Key in BCM’ procedure may be needed using a professional scan tool. A ‘Brake Pedal Position Relearn’ may also be required on certain models. Your original module will be returned to you with your order; we do not require it as a core.
Will This Fit My Truck?
This BCM is a direct replacement for a wide range of General Motors vehicles and is interchangeable with numerous part numbers, including 25844480, 25835966, and 15926094. 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 a smooth door skin. Please verify your part number or consult with our experts if you are unsure about compatibility.
Frequently Asked Questions
What is the ‘Cloning Service’ and why do I need it?
Cloning is a process where we transfer the vehicle-specific data (like VIN, security info, and options) from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your truck, eliminating the need for expensive dealership programming.
Do I need to send my original BCM to you?
Yes, for the cloning service to be performed, you will need to send us your original module. We will clone the data onto the replacement unit and ship both modules back to you.
What if my airbag light is still on after installation?
If the airbag light persists, it’s typically because the new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool.
Is this a reliable fix for my 2011 Sierra Denali BCM issues?
Absolutely. This module is built to OEM standards and, when combined with our cloning service, provides a durable and effective solution to common electrical problems, restoring your vehicle’s factory operation. It is backed by a one-year warranty.
Are there any other parts I should check when replacing the BCM?
We strongly recommend inspecting the battery, alternator, and all major power and ground connections. A poor ground, especially the one on the driver’s side A-pillar, is a very common cause of BCM failure on these GM trucks.