Experiencing Bizarre Electrical Issues in Your GMC Sierra Denali?
If your 2007-2010 GMC Sierra Denali is plagued by frustrating electrical problems like flickering lights, malfunctioning power windows, or a dead HVAC system, a failing Body Control Module (BCM) is the most common cause. The BCM is the central nervous system for your truck’s body electronics, and when it fails, it can create a cascade of seemingly unrelated issues. This VIN-programmed BCM, part number 15284816 (interchangeable with 25844480), is the definitive solution to restore full functionality and reliability to your vehicle without a trip to the dealership.
Common Symptoms of a Failing BCM
- ✔ Unresponsive or erratic HVAC and climate controls.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Interior or exterior lights staying on, flickering, or not turning on at all.
- ✔ An active airbag warning light, often with a B1001 diagnostic trouble code.
- ✔ Vehicle security system malfunctions, causing no-start or stalling conditions.
- ✔ Intermittent wiper operation or wipers that won’t turn off.
The Direct Solution: A Programmed 2007-2010 Sierra Denali BCM
Don’t let a faulty module keep your truck off the road. This BCM is a genuine, OEM-quality part that arrives pre-programmed to your truck’s specific Vehicle Identification Number (VIN). This critical step ensures that the module communicates perfectly with your vehicle’s other systems right out of the box. You get a seamless, plug-and-play installation that eliminates the need for expensive dealership programming or specialized tools. Simply provide your VIN at checkout, and we handle the rest.
Installation and Post-Install Notes
Installation is straightforward for the average DIYer. The BCM is typically located under the driver’s side dashboard, near the steering column, and can be swapped in under 5 minutes. While our VIN programming covers the majority of functions, please be aware of these potential post-installation procedures:
- Airbag System Sync: If the airbag light remains on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
This part requires no core return, so you can keep your old module without any core charges or hassle.
Frequently Asked Questions
What does the Body Control Module do on my Sierra Denali?
The BCM acts as the main computer for your truck’s body accessories. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC blower motor.
Is this part ready to install when I receive it?
Yes! This BCM is pre-programmed to your vehicle’s VIN before shipping. This ensures it works with your specific options and security system for a true plug-and-play installation, with no dealership visit required.
What if my airbag light is on after installing the new BCM?
This is a common security measure. You will need a technician with a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and clear the light.
Where is the BCM located?
On 2007-2010 GMC Sierra models, the BCM is located under the driver-side dashboard, typically to the left of the steering column.
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 any obligation.