Restore Full Electrical Function to Your GM Truck
Are you experiencing a frustrating array of electrical problems in your 2003-2007 Chevrolet Silverado 3500, GMC Sierra, or other compatible GM truck? Issues like flickering lights, unresponsive power windows, a malfunctioning security system, or erratic HVAC controls often point to a single culprit: a failing Body Control Module (BCM). This module acts as the central computer for your vehicle’s body electronics. When it begins to fail, it can create confusing and intermittent symptoms that are difficult to diagnose. This replacement BCM, part number 15137395, is the definitive solution, arriving pre-programmed to your truck’s VIN for a simple, plug-and-play installation.
From the Diagnostic Bay
We had a 2006 Silverado 2500 in the shop that was driving the owner crazy. The radio would turn on and off by itself, the driver’s side power window worked only when it wanted to, and the security light would stay on, sometimes preventing the truck from starting. The owner had already replaced the battery and checked all the fuses. After scanning the vehicle, we found a handful of communication error codes all pointing back to the BCM. Instead of a complex and expensive wiring hunt, we installed a VIN-programmed BCM. In under 10 minutes, all the phantom electrical gremlins were gone, and the truck was back to being reliable. It’s a common story for these otherwise dependable trucks.
Your Direct Solution: A Programmed Silverado 3500 Body Control Module
Don’t let a faulty BCM sideline your vehicle. Our OEM-quality replacement module restores the communication network that controls your truck’s essential comfort and security features. Because we program the module to your specific Vehicle Identification Number (VIN) before shipping, you can bypass the expensive trip to the dealership for programming. This ensures that the module works seamlessly with your truck’s existing systems right out of the box, resolving common Diagnostic Trouble Codes (DTCs) like B1001 and others related to body functions.
Symptoms of a Failing GM Body Control Module
- ✔ Unresponsive or intermittently working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ Malfunctioning HVAC controls, including an inoperative blower fan or incorrect air temperature.
- ✔ An active airbag warning light, often accompanied by communication codes.
- ✔ Security system errors, including a “Service Security System” message or a no-start condition.
- ✔ Erratic behavior from the windshield wipers or radio.
Installation and Post-Install Notes
Installing your new Silverado 3500 Body Control Module is a straightforward process. It is typically located under the driver’s side dashboard, near the steering column. Disconnecting the battery for a few minutes before swapping the modules is recommended. While the unit is plug-and-play, some vehicles may require a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on after installation. This requires a professional scan tool but is a quick process. Similarly, a brake pedal position sensor 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 on a Silverado 3500?
The BCM is the main computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, the security system, interior and exterior lighting, HVAC blower, and wipers.
Is this BCM difficult to install?
No, installation is typically very simple. The module is usually located under the steering column and can be swapped in under 10 minutes with basic tools. No complex wiring is required.
Do I need to take my truck to the dealership after installing this?
No. This BCM comes pre-programmed to your vehicle’s VIN. This allows you to skip the dealership’s programming service, saving you time and money.
What happens if my airbag light is on after installation?
In some cases, the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This is done with a ‘Setup SDM Primary Key in BCM’ procedure using a professional scan tool.
How do I know this part is compatible with my truck?
This module is a direct replacement for multiple part numbers, including 15137395 and 15116066. It fits a wide range of 2002-2007 GM trucks and SUVs like the Silverado, Sierra, Tahoe, and Suburban. Check the fitment list on this page to confirm.
Is there a core charge for my old BCM?
No, there is no core charge. You can keep your old module without any penalty or need to return it.