Is Your Truck Plagued by Baffling Electrical Problems?
If you’re dealing with flickering lights, a malfunctioning climate control system, or power windows and locks that have a mind of their own, a failing Body Control Module (BCM) is the most likely cause. The BCM is the central command center for your vehicle’s body electronics. When it fails, it can create a cascade of frustrating and difficult-to-diagnose issues. This OEM-quality replacement BCM, part number 15116066, is the definitive solution for restoring full electrical functionality to your 2002-2007 GM truck or SUV.
From the Diagnostic Bay
We had a 2006 Chevy Tahoe come in with a classic case of BCM failure. The customer reported the radio would turn on by itself, the door locks would cycle randomly, and the battery would be dead every few mornings. After confirming power and grounds were good, we pinpointed the faulty BCM. Instead of a costly trip to the dealer, the customer ordered one of our VIN-programmed modules. The installation took less than 10 minutes, and the strange electrical gremlins were gone for good. It’s a common story for these otherwise reliable trucks.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ HVAC and climate controls are unresponsive or the blower motor works intermittently.
- ✔ The security system acts up, causing a no-start condition or false alarms.
- ✔ Interior or exterior lights flicker, stay on, or won’t turn on at all.
- ✔ An airbag warning light is illuminated on the dash, often with a B1001 diagnostic trouble code.
- ✔ Intermittent and seemingly unrelated electrical issues that are hard to trace.
The Plug-and-Play Solution for Your 2003-2007 GMC Sierra Denali BCM
Don’t let a faulty module keep your truck off the road. Our replacement BCMs are meticulously prepared to ensure a seamless repair. We pre-program each module to your vehicle’s specific VIN, loading the latest GM software updates. This critical step ensures that the module communicates perfectly with your truck’s other systems right out of the box, eliminating the need for expensive dealership programming. This is a true plug-and-play fix that restores your vehicle’s performance and reliability.
Installation & Post-Install Notes
Installation is straightforward for the DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the battery, remove the old module, plug in the new one, and reconnect the battery. While our programming handles the heavy lifting, some vehicles may require a simple relearn procedure.
- Airbag System Sync: 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.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure proper brake light and traction control operation.
This module is a direct replacement for multiple part numbers, including: 10367690, 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 15064149, and 15194170.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, HVAC system, and the security system.
Is this BCM really plug-and-play?
Yes! We program the module to your vehicle’s VIN before shipping. This means it arrives ready for installation without requiring any additional programming from a dealership, saving you time and money.
Where is the BCM located on my 2004 GMC Sierra?
On most 2003-2007 GM trucks and SUVs, including the Sierra, the BCM is located under the driver’s side of the dashboard, to the left of the steering column.
What if my airbag light is on after I install the new BCM?
This is not uncommon. It means the new BCM needs to be synchronized with the airbag’s Sensing and Diagnostic Module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I have to send my old part back?
No, there is no core charge for this part. You can keep your old module without any hassle.
Will this fix my intermittent no-start problem?
A faulty BCM is a very common cause of intermittent no-start issues related to the vehicle’s security system (Passlock/Passkey). If the security light is flashing when the truck won’t start, this module is a very likely solution.