Tired of Unpredictable Electrical Problems in Your Silverado HD?
If you’re dealing with bizarre electrical issues in your 2007-2011 Chevrolet Silverado 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 frustrating problems, from non-working power windows and door locks to a dead HVAC system on a hot day. This replacement module, part number 15926094, is the definitive solution to restore full functionality and reliability to your workhorse.
We make the repair process simple with our professional Cloning Service. Simply send us your original BCM, and we will transfer all the critical vehicle-specific data to this replacement unit. The module you receive back will be 100% plug-and-play, with no need for an expensive trip to the dealership for programming. It’s the most efficient way to get your truck back to perfect working order.
Case Study: The Phantom Electrical Drain
A customer brought in his ’09 Silverado 2500 with a battery that would die overnight. He’d already replaced the battery and alternator. After hooking up my multimeter, I found a significant parasitic draw. By pulling fuses one by one, I traced the draw to the BCM circuit. The BCM itself was failing internally, keeping certain modules awake even when the truck was off. Swapping in a cloned BCM not only fixed the battery drain but also resolved an intermittent dome light issue he hadn’t even mentioned. This is a classic failure mode for these modules.
Is Your Silverado Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your 2007-2011 Silverado 3500 BCM needs attention:
- âś” Unresponsive or erratic power windows, door locks, or interior lights.
- âś” HVAC controls not working, or the blower motor is stuck on or off.
- âś” The security system light is flashing, and the engine won’t start (anti-theft active).
- âś” An airbag warning light is illuminated, often with a DTC B1001 (Setup SDM Primary Key in BCM).
- âś” Wipers behaving erratically or not working at all.
- âś” Communication issues between various electronic modules.
A Straightforward Guide to Installation
Replacing your BCM is a quick job that most DIYers can handle in under 15 minutes. Here’s how to do it:
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronics.
- Locate the BCM: On most GMT900 trucks, the BCM is located under the driver’s side of the dashboard, to the left of the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: The BCM is held in by tabs or a few small bolts. Carefully unplug the multiple electrical connectors. They have locking tabs, so be sure to depress them before pulling.
- Install the New Module: Seat the cloned BCM in the mounting bracket and securely plug in all the connectors. You should hear a click as they lock into place.
- Reconnect and Test: Reconnect the battery terminal. Start the truck and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Post-Installation Note: In some cases, you may need to perform a post-install procedure like an Airbag System Sync or Brake Pedal Position Relearn. See our FAQ section for more details.
Guaranteed Fitment for Your GM HD Truck
This module is a direct replacement for part number 15926094 and is compatible with a wide range of General Motors trucks and SUVs. It serves as an interchangeable part for many other numbers, including 25844480, 25835966, 15878753, and 20939137. While it is a perfect fit for the 2007-2011 Silverado 3500 BCM, it also fits:
- âś” Chevrolet Silverado 1500, 2500, 3500 (2007-2013)
- âś” GMC Sierra 1500, 2500, 3500 & Denali (2007-2013)
- âś” Chevrolet Tahoe & Suburban (2007-2011)
- âś” GMC Yukon & Yukon XL (2007-2011)
- âś” Cadillac Escalade, ESV, EXT (2007-2011)
- âś” Chevrolet Avalanche 1500 (2007-2011)
Always verify your original part number to ensure compatibility before ordering.
Frequently Asked Questions
What is a BCM cloning service?
Cloning is a service where we transfer the exact vehicle-specific programming and security information from your original BCM to the replacement unit. This makes the new module a true plug-and-play part, eliminating the need for dealership programming and ensuring all your vehicle’s options work correctly.
Will I need any special tools for installation?
No, basic hand tools like a socket set or screwdriver are typically all that’s needed to access and replace the BCM. However, if the airbag light appears after installation, a professional bi-directional scan tool is required to perform the ‘Setup SDM Primary Key’ procedure.
What happens to my old BCM? Is there a core charge?
There is no core charge. We require your original module to perform the cloning service. Once the service is complete, we ship both your original module and the newly programmed replacement back to you.
What if my airbag light is on after installing the new BCM?
This is a known security feature on GM vehicles. It means the new BCM needs to be synced with the airbag’s Supplemental Inflatable Restraint (SIR) module. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function, which re-establishes the security handshake between the two modules.
Can a bad BCM cause my truck not to start?
Absolutely. The BCM is a key part of the vehicle’s anti-theft system (Passlock/Passkey). If it fails, it can prevent the Powertrain Control Module (PCM) from allowing the engine to start, leaving you stranded. Our cloning service transfers this vital security data, resolving that issue.