Restore Full Functionality to Your GMC Truck
If your 2007-2010 GMC Sierra Denali is plagued by baffling electrical problems, a failing Body Control Module (BCM) is the most likely culprit. As the central command for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating issues, from non-responsive power windows and door locks to a dead HVAC system or a persistent airbag light. This replacement Body Control Module, part number 15940214, is the definitive solution. We pre-program it to your truck’s specific Vehicle Identification Number (VIN), ensuring it arrives ready for a hassle-free, plug-and-play installation without requiring a costly trip to the dealership for programming.
A Technician’s Notebook: Chasing Electrical Ghosts
I once had a 2008 Sierra Denali in my bay that was driving the owner crazy. The radio would randomly shut off, the dome light flickered, and the anti-theft system would engage for no reason. He had already replaced the battery and checked all the main ground connections. After hooking up my scan tool, I saw a dozen intermittent communication codes across various systems. This is a classic sign. It’s not a single bad sensor; it’s the central hub that’s failing. We swapped in a VIN-programmed BCM, and every single issue vanished instantly. It’s a reminder that with modern vehicles, the problem is often a central module, not a dozen separate failures.
Is Your Sierra Denali Exhibiting 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. A new 2007-2010 Sierra Denali BCM is often the key to resolving these headaches.
- ✔ Your power windows, door locks, or mirrors work intermittently or not at all.
- ✔ The climate control system is unresponsive, or the blower motor behaves erratically.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔ The vehicle’s security system malfunctions, causing no-start or stalling conditions.
- ✔ Headlights, taillights, or interior lights flicker, stay on, or won’t turn on.
- ✔ You’re seeing multiple, seemingly unrelated diagnostic trouble codes (DTCs).
A Straightforward Guide to BCM Installation
One of the best parts of this solution is its simplicity. You don’t need to be a master mechanic to get your truck back in order. The entire process typically takes less than 10 minutes.
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electrical components.
- Locate the BCM: On your Sierra Denali, the Body Control Module is conveniently located under the driver’s side dashboard, near the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the old BCM and remove it.
- Install the New Module: Seat the new, pre-programmed 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. Start your truck and test all the functions: lights, locks, windows, wipers, and HVAC to confirm the repair.
Post-Installation Note: In some cases, if an airbag light was already on, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems. This is a simple procedure found in the special functions menu of most advanced scanners.
Verified Vehicle Fitment
This module is a direct replacement for part number 15940214 and is guaranteed to fit your 2007-2010 Sierra Denali BCM requirements. It also fits a wide range of other GM trucks and SUVs from 2007-2013, including the Chevrolet Silverado, Tahoe, Suburban, Avalanche, and Cadillac Escalade. It is interchangeable with numerous part numbers, such as 25844480, 25835966, 15926094, and 20939137, ensuring broad compatibility. With our VIN programming service, you get the right software for your specific vehicle options, ensuring everything works as it did from the factory.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load your truck’s specific Vehicle Identification Number (VIN) and factory options onto the module before shipping. This makes installation simple—just plug it in and go, with no need for expensive dealership programming.
Will this fix my airbag light with code B1001?
A faulty BCM is a very common cause for the B1001 code. Replacing it often solves the issue. However, after installation, you may need to use a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Is there a core charge for this part?
No, there is absolutely no core charge. You can keep your old module without any obligation to send it back, saving you time and hassle.
How difficult is the installation for a DIYer?
This is a great DIY-friendly repair. The module is typically located under the driver’s side dash and is held in by simple clips or a few bolts. With basic tools, most people can swap it out in under 10 minutes.
What kind of warranty is included?
This Body Control Module comes with a one-year warranty, giving you peace of mind and confidence in your repair.