Tired of Chasing Electrical Gremlins in Your GM Truck?
If your Silverado, Sierra, or Tahoe is suffering from a mind of its own—with lights flickering, windows refusing to budge, or the security system acting up—the Body Control Module (BCM) is the likely culprit. As the central command for your vehicle’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated issues. This module, part number 15926094, is the definitive solution to restore order and reliability to your truck’s essential functions.
This isn’t just a replacement part; it’s a complete, hassle-free repair service. We perform a professional Cloning Service by transferring all the critical data from your original BCM to this replacement unit. This means all your vehicle’s specific settings, key fob programming, and factory options are perfectly preserved. The result is a true plug-and-play module that requires no expensive trip to the dealership for programming.
Is Your Truck Showing These Symptoms?
- ✔ Unresponsive or erratic power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that don’t work correctly or stay on.
- ✔ HVAC and climate control systems failing or blower motor working intermittently.
- ✔ An airbag warning light on the dash, often accompanied by DTC B1001.
- ✔ Vehicle security system malfunctions, causing no-start or stalling conditions.
- ✔ Intermittent wiper operation or failure.
- ✔ Communication errors with other modules on the network (U-codes).
From the Diagnostic Bay: The Case of the Haunted Silverado
A customer brought in a 2009 Silverado 2500HD with a laundry list of bizarre electrical problems. The radio would randomly shut off, the driver’s side window worked only when it wanted to, and the airbag light was on. He’d already replaced the battery and checked the main grounds. In my 20+ years of experience, these scattered symptoms almost always point back to one component: the BCM. After scanning, we found a BCM internal communication fault and the classic B1001 code. Instead of a costly new module and dealer programming, we provided a cloned BCM. The customer swapped it in his driveway in under 10 minutes, and every single issue was resolved instantly. It’s a common failure, and this is the most effective fix.
A Straightforward Guide to BCM Replacement
- ✔ Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Step 2: Locate the BCM. On most GM trucks and SUVs from this era, the BCM is located under the driver’s side dashboard, near the steering column. It’s a black box with several large electrical connectors.
- ✔ Step 3: Disconnect and Remove. Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it.
- ✔ Step 4: Install the New Module. Mount your new, cloned BCM in the same position and securely plug in all the electrical connectors until they click.
- ✔ Step 5: Reconnect and Test. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, wipers, and HVAC to confirm the repair.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play process, some vehicle systems may require a quick sync. If your airbag light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure using a professional scan tool. This re-establishes communication between the BCM and the airbag system. In some cases, a Brake Pedal Position relearn may also be needed. We always return your original module with the replacement unit; there is no core charge or return required.
Guaranteed Fitment for Your GM HD Truck
This Body Control Module is a direct replacement for part number 15926094 and interchanges with several other part numbers. It is verified to fit the following vehicles:
CHEVROLET SILVERADO 1500/2500/3500: 2007-2013
CHEVROLET SUBURBAN 1500/2500: 2007-2011
CHEVROLET TAHOE: 2007-2011
GMC SIERRA 1500/2500/3500: 2007-2013
GMC SIERRA DENALI: 2007-2013
GMC YUKON & YUKON XL: 2007-2011
CADILLAC ESCALADE, ESV, EXT: 2007-2011
Note: Please verify your original part number or contact us with your VIN to ensure compatibility. This module is a direct fit for models originally equipped with part numbers 15926094, 25835966, 20939137, 22860591, and others listed in the source data.
Frequently Asked Questions
What is a “Cloning Service” and why do I need it?
Cloning is the process of transferring the exact software and vehicle-specific data (like VIN, mileage, and key fob info) from your original BCM to the replacement one. This makes the new module a perfect electronic match for your truck, eliminating the need for expensive and time-consuming dealership programming.
Is this a difficult part to install myself?
No, this is a great DIY-friendly repair. The BCM is typically held in by a few clips or bolts under the driver’s dash and requires basic hand tools. The entire swap usually takes less than 15 minutes.
Will this fix my airbag light with code B1001?
A faulty BCM is a very common cause of the B1001 code. Replacing the module will resolve the root cause of the fault. However, you may need a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure after installation to clear the light from the dash.
Do I need to send my original BCM back?
No, there is no core charge for this part. We ship your original module back to you along with the newly programmed replacement. You can keep it or dispose of it as you wish.
What happens if I install it and some things still don’t work?
First, double-check all connector plugs to ensure they are fully seated. A loose connection is a common issue. If problems persist, it’s important to check for underlying issues like poor ground connections or wiring faults, which the BCM relies on to function correctly.