Tired of Your Truck’s Electrical Gremlins?
If your GMC Sierra Denali is starting to act possessed—with flickering lights, a climate control system with a mind of its own, or power windows that refuse to budge—you’re likely dealing with a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable issues. This isn’t just an annoyance; it can affect your vehicle’s security and safety systems. This replacement module, part number 10367690, is the definitive, hassle-free solution to restore order.
We take the guesswork and dealer expense out of the equation. Each module is expertly programmed to your truck’s specific Vehicle Identification Number (VIN) before it ships. This means it arrives at your door ready for a true plug-and-play installation, instantly communicating with your truck’s existing components. Stop chasing electrical shorts and replace the core problem with a reliable, pre-configured 2003-2007 Sierra Denali BCM.
A Technician’s Notebook
I recently had a 2006 Sierra Denali in my bay with a classic complaint: the driver’s side power window and locks were dead, but the passenger side worked fine. The owner had already replaced the master window switch twice. After a quick scan, I saw a handful of U-codes (communication errors) pointing to the BCM. These GMT800 trucks are notorious for BCM failures due to heat cycles and moisture exposure under the dash. Instead of hours chasing wires, we installed a VIN-programmed BCM. In less than 10 minutes, the window, locks, and even a dim dome light he hadn’t mentioned were all working perfectly. It’s a textbook example of why you diagnose the system, not just the symptom.
Is Your Truck 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 module needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ HVAC controls not working correctly, or the blower motor speed is erratic.
- ✔ The security system light stays on, or the truck experiences a no-start condition.
- ✔ Airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Headlights, taillights, or interior lights flicker or fail to turn on/off.
- ✔ The horn sounds randomly or doesn’t work at all.
A Straightforward Guide to Installation
You don’t need to be a master mechanic to install this part. The entire process typically takes less than 15 minutes with basic hand tools.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent electrical shorts and allow the systems to reset.
- Locate the BCM: On most Sierra Denali models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large wiring harnesses connected to it.
- Swap the Modules: Carefully unplug the wiring connectors from the old BCM. They have release tabs that need to be pressed. Once disconnected, unbolt or unclip the old module and remove it.
- Install the New BCM: Mount your new, VIN-programmed 2003-2007 Sierra Denali BCM in the same location and securely reconnect all wiring harnesses. You’ll hear a click as they lock into place.
- Power Up and Test: Reconnect the battery terminal. Start your truck and test all the functions: windows, locks, lights, HVAC, and wipers to confirm the repair.
Post-Installation Note: In some cases, particularly if the airbag light was on, a “Setup SDM Primary Key in BCM” procedure may be required using a professional scan tool. A brake pedal position relearn might also be necessary. And the best part? There’s no core charge, so you can keep your old part without any hassle.
Guaranteed Fitment for Your GM Truck or SUV
This BCM is a direct replacement for part number 10367690 and is interchangeable with several other OEM part numbers, including 15116066, 15136225, and 15198116. It is designed for a wide range of General Motors vehicles. While this page focuses on the 2003-2007 Sierra Denali BCM, it also fits the following models:
Frequently Asked Questions
Do I need to take my truck to the dealer after installing this BCM?
No. This BCM comes pre-programmed to your vehicle’s VIN. This eliminates the need for dealer-level programming, saving you time and money. It’s designed to be a plug-and-play solution.
What does “No Core Charge” mean?
It means you don’t have to send your old, faulty BCM back to us. You can keep it, dispose of it, or recycle it yourself without any extra fees or hassle.
My airbag light is on. Will this fix it?
This module will fix the airbag light if it’s caused by a faulty BCM (often showing code B1001). However, after installation, you may need a mechanic with a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure to sync the new BCM with the airbag system.
Is this part difficult to install for a DIYer?
Not at all. The BCM is typically held in by a few clips or small bolts and is easily accessible under the dashboard. With basic tools, most people can complete the swap in under 15 minutes.
What if I have other electrical problems after installation?
While this BCM resolves the most common issues, vehicle electrical systems are complex. If problems persist, it could indicate a separate issue with wiring, grounds, or other modules. Always consult a factory service manual or a qualified technician for complex diagnostics.