Is your GM truck or van acting possessed?
If you’re dealing with a frustrating array of electrical gremlins like flickering lights, malfunctioning power windows and locks, a security light that won’t turn off, or a mysterious battery drain, the culprit is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it goes bad, it can cause unpredictable and annoying issues. This replacement BCM, part number 15198115, is the definitive solution to restore order and functionality to your vehicle.
The Plug-and-Play Solution for Your 2003-2007 Sierra BCM
Don’t waste time and money at the dealership. We take the hassle out of the repair process. When you order from us, we flash the module with the latest GM software updates, programming it specifically to your vehicle’s VIN. This means it arrives at your door ready for installation, saving you from needing an expensive trip to the dealer for programming. It’s a direct-fit replacement for a wide range of GM trucks and vans, ensuring compatibility and proper function.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security or anti-theft system light is illuminated on the dash.
- ✔ Intermittent or complete failure of dashboard gauges.
- ✔ Unexplained parasitic battery drain that kills your battery overnight.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
Installation & Post-Install Notes
On most Silverado and Sierra pickups, the BCM is located under the steering column. On Express and Savana vans, it’s typically found in the center of the dash. While the physical installation is straightforward, please be aware of potential post-installation procedures. In some cases, an ‘Airbag System Sync’ or a ‘Brake Pedal Position Relearn’ may be required using a professional-grade scan tool. This is only necessary if you experience an airbag warning light or brake system issues after installation. For most users, the module will function correctly immediately.
This module is a direct replacement for part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls various electronic accessories not related to the engine. This includes power windows, locks, lights, wipers, the security system, and more.
How do I know if my BCM is the problem?
Common signs include multiple, unrelated electrical issues happening at once, such as faulty gauges, non-working lights, and power accessory failures. A parasitic battery drain is also a very common symptom. A diagnostic scan for communication codes (U-codes) can often confirm a BCM failure.
Is this BCM really plug-and-play?
Yes, for the most part. We pre-program it to your vehicle’s VIN, so it communicates with your truck right out of the box. In some rare cases, a simple relearn procedure for the airbag or brake pedal position sensor may be needed, which requires a capable scan tool.
Where is the BCM located on my truck?
On 2003-2007 Silverado and Sierra pickups, the BCM is typically found under the driver’s side dashboard, near the steering column. On Express and Savana vans, it is usually located in the center dash area.
What is the process after I place my order?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive it. Once we have your VIN, we will program the module and ship it to you, ready for installation.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.