Restore Full Electrical Function to Your Truck
Are you battling frustrating electrical problems in your 2003-2007 GMC Sierra Denali? Issues like malfunctioning power windows, erratic interior lights, a non-responsive HVAC system, or a persistent airbag light are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your truck’s body electronics, and when it fails, it can cause a wide range of confusing and disruptive symptoms. This genuine OEM-quality replacement BCM, part number 15136877, is the definitive solution to restore your vehicle’s factory performance and reliability.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power door locks, windows, and mirrors.
- ✔ HVAC blower motor or climate controls failing to operate correctly.
- ✔ Airbag warning light illuminated on the dash, often with a B1001 diagnostic trouble code.
- ✔ Erratic behavior from interior or exterior lights, including headlights and dome lights.
- ✔ Vehicle security system malfunctions, leading to no-start or anti-theft activation issues.
- ✔ Unexplained battery drain or communication errors between various vehicle modules.
Solving Issues with Your 2003-2007 Sierra Denali BCM
Don’t let a faulty module keep your truck from performing its best. Our replacement BCM is meticulously prepared to ensure a seamless repair. The most significant benefit is our complimentary VIN programming service. We flash the module with your truck’s specific Vehicle Identification Number and the latest GM software updates before it ships. This means it arrives ready for a true plug-and-play installation, eliminating the need for expensive programming at a dealership. This module is a direct replacement for a variety of part numbers, including 15116066, 15136225, 10383536, and 15198116, ensuring broad compatibility.
Installation and Post-Install Notes
The physical installation is straightforward. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the vehicle’s battery, unplug the electrical connectors from the old module, remove it, and install the new one. While the module is pre-programmed, some vehicles may require a ‘re-learning’ procedure for specific systems. If the airbag light remains on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool. In some cases, a Brake Pedal Position relearn may also be necessary. Best of all, there is no core charge, so you can keep your old part without any hassle.
Frequently Asked Questions
What does the Body Control Module do on my Sierra Denali?
The BCM is a computer that manages and controls many of your truck’s non-engine related electronic functions, such as power windows, door locks, the security system, lighting, wipers, and the HVAC system.
Is this part ready to install when I receive it?
Yes. This 2003-2007 Sierra Denali BCM is pre-programmed to your vehicle’s VIN before shipping. This makes it a plug-and-play part, requiring no additional dealership programming for basic functionality.
Where is the BCM located?
On the 2003-2007 GMC Sierra Denali, the BCM is typically found under the driver’s side of the dashboard, attached to or near the steering column.
What if my airbag light stays on after installing the new BCM?
If the airbag light is on, the vehicle’s computer system requires a ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system and must be done with a professional-grade diagnostic tool.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without needing to return it.