Is Your GM Truck or SUV Plagued by Baffling Electrical Issues?
If you’re dealing with flickering lights, a non-responsive HVAC system, or power windows and locks with a mind of their own, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central command center for your vehicle’s body electronics. When it malfunctions, it can cause a cascade of frustrating and seemingly unrelated problems. This OEM-quality GM 15116066 BCM is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free, plug-and-play repair.
Diagnosing a Faulty Body Control Module
A failing BCM can manifest in numerous ways, often making diagnosis tricky. If your vehicle is experiencing any of the issues below, it’s a strong indicator that your BCM needs replacement.
Symptoms of a Bad BCM
- ✔ Intermittent or total loss of heating and air conditioning controls.
- ✔ Power windows, door locks, or interior lights not working correctly.
- ✔ The security system acting up, causing no-start conditions or false alarms.
- ✔ An illuminated airbag warning light, often with a B1001 diagnostic trouble code.
- ✔ Erratic wiper operation or dashboard gauge behavior.
- ✔ Multiple communication-related DTCs stored in the system.
Why Choose Our 2003-2006 Tahoe BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The key is our complimentary VIN programming service. We flash the module with the latest GM software specific to your vehicle, ensuring it communicates flawlessly with all other systems right out of the box. This eliminates the need for expensive dealership programming, saving you time and money. Built to strict OEM standards, this module restores your vehicle’s factory functionality and is backed by our one-year warranty for your peace of mind. It directly interchanges with part numbers 10383536, 15136225, 15198116, and more, making it the perfect fit for your repair.
Installation and Post-Install Notes
Installation is straightforward for the average DIYer. The BCM is typically located under the driver’s side dash, near the steering column. Disconnecting the battery for 10-15 minutes before you begin is recommended. After installation, while most vehicles will operate perfectly, some may require a ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool if the airbag light remains on. This syncs the new BCM with the airbag system. Additionally, a Brake Pedal Position Relearn may be needed on certain models. Best of all, there is no core charge, so you don’t have to worry about sending your old part back.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic features, such as power windows, locks, lights, wipers, security system, and HVAC controls.
Is this part really plug-and-play?
Yes! We pre-program the module to your vehicle’s specific VIN before shipping. This ensures it works with your existing components and options, eliminating the need for a trip to the dealership for programming.
My airbag light is on after installing the new BCM. What should I do?
This is a known possibility. You will need a technician with a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system and will turn off the light.
Where is the BCM located on my 2004 Tahoe or Silverado?
On most compatible GM trucks and SUVs from this era, including the Tahoe and Silverado, the BCM is located under the driver’s side dashboard, typically to the left of the steering column.
Do I need to return my old part?
No. There is no core charge or fee associated with this part. You can keep your old module without any penalty.