Are you battling persistent electrical gremlins in your GM truck or van? Flickering lights, unresponsive power windows, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues. This OEM-quality Body Control Module, part number 15198116, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
From the Diagnostic Bay
We once had a 2005 Silverado in the shop where the owner had replaced the driver’s side window motor three times. Each time, the new motor would work for a few days and then fail. He was convinced he was getting faulty parts. After hooking up our diagnostic scanner, we saw no communication from the BCM to the driver’s door module. The BCM itself was the culprit, sending faulty signals that were burning out the motors. We installed a VIN-programmed BCM, and the problem was solved instantly. It’s a classic case of chasing symptoms instead of diagnosing the root cause.
Common Symptoms of a Failing BCM
- ✔ Unresponsive or erratic climate controls (A/C and heat).
- ✔ Power windows, door locks, or interior/exterior lights that work intermittently or not at all.
- ✔ Vehicle security system acting up, potentially causing a no-start condition.
- ✔ A persistent airbag warning light on the dash, often with DTC B1001.
- ✔ Strange electrical behavior that seems like a bad ground but isn’t.
- ✔ Communication errors with other modules on the vehicle’s network.
The Plug-and-Play Solution for Your 2004-2007 Express 3500 Van BCM
Forget expensive dealership visits and programming fees. We handle the complex part for you. Simply provide your vehicle’s VIN during checkout, and we will program this module with the latest GM software specific to your vehicle. This ensures all factory options work correctly right out of the box. Installation is simple, typically taking less than 10 minutes with basic hand tools. The module is usually located under the steering column or behind the center dash panel.
Post-Installation Notes
While this module is designed for a seamless installation, some vehicles may require a simple relearn procedure. If you see an airbag warning light after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure with a professional scan tool. Additionally, a Brake Pedal Position Relearn might be necessary on some models to ensure proper brake light and traction control operation. These are standard procedures and do not indicate a fault with the module.
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 functions, such as power windows, door locks, interior and exterior lighting, wipers, the security system, and HVAC controls.
Do I need to program this module?
No. This module comes pre-programmed to your vehicle’s VIN. This makes the installation process simple and eliminates the need for a trip to the dealership for expensive programming.
Where is the BCM located on my vehicle?
On most compatible GM trucks, SUVs, and vans from this era, the BCM is located under the driver’s side dashboard, near the steering column or behind the center dash panel.
What if the airbag light stays on after I install it?
This is a normal security measure on some vehicles. A technician with a professional diagnostic tool will need to perform a quick ‘Setup SDM Primary Key in BCM’ procedure to sync the new BCM with the airbag system.
Will this part fit my 2005 GMC Sierra or 2006 Chevy Tahoe?
Yes, this BCM is compatible with a wide range of 2002-2007 GM vehicles, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, Avalanche, Hummer H2, and Express/Savana vans. Please verify the part number for a perfect match.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module without needing to send it back.