Are you battling bizarre electrical issues in your GM truck or van? Flickering lights, malfunctioning power accessories, or random warning messages on your dash are common signs of a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and seemingly unrelated problems. This pre-programmed BCM is the reliable, straightforward solution to restore your vehicle’s functionality and peace of mind.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or interior lighting.
- ✔ False warning lights on the instrument cluster, such as the security or airbag light.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
- ✔ The horn, wipers, or other accessories activating on their own or not working at all.
- ✔ Climate control and radio malfunctions.
- ✔ Communication errors when trying to scan the vehicle with a diagnostic tool.
Why Choose Our 2003-2006 GM Truck BCM?
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and hassle out of the repair by programming the module specifically for your vehicle using your VIN. This ensures that all the correct options and software are loaded before it even ships. We flash it with the latest stable software available from GM, which often corrects bugs and issues present in the original factory programming. Simply provide your VIN at checkout, and we’ll handle the rest. Best of all, there is no core charge, so you can keep your old part.
Installation and Post-Install Notes
On most compatible trucks like the Silverado and Sierra, the BCM is located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it is typically found in the center dash area. While the physical installation is straightforward, please be aware of potential post-installation procedures. In some cases, an Airbag System Sync may be required if the airbag warning light illuminates. This ‘Setup SDM Primary Key in BCM’ procedure must be done with a professional-grade scan tool. Additionally, a Brake Pedal Position Relearn might be necessary to ensure proper brake light and traction control operation. Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide variety of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
Is this BCM difficult to install?
The physical replacement is typically simple, requiring only basic hand tools. However, because it’s a sensitive electronic component, post-installation procedures like an airbag sync or brake sensor relearn may be necessary, which require a professional scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information to program the module correctly.
Do I need to send my old BCM back?
No. This part has no core charge, so you can keep your original module without any extra fees or hassle.
What happens if my airbag light is on after I install this?
If the airbag light comes on, it means the new BCM needs to be electronically synced with the vehicle’s airbag system (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure using a compatible high-end scan tool.
Will this part fit other part numbers?
Yes, this BCM is a direct replacement for the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.