Is Your GM Truck or Van Plagued by Electrical Gremlins?
Are you dealing with flickering lights, power windows that have a mind of their own, or a security system that randomly activates? These frustrating and unpredictable issues often point to a single culprit: a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, managing everything from your interior lights and power locks to your instrument cluster and security features. When it starts to fail, it can create a cascade of bizarre electrical problems that are difficult to diagnose.
We had a 2005 Sierra 2500 in the shop that was driving its owner crazy. The dome lights wouldn’t turn off, the radio would randomly shut down, and the horn would honk when he used the turn signal. He had already replaced the light switch and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication codes pointing to a network failure. The root cause wasn’t any of the individual components, but the central hub that controls them all. A faulty BCM was corrupting the data bus. Installing a correctly programmed replacement solved every single issue in one go, saving the customer from chasing down more dead ends.
The Plug-and-Play Solution for Your Vehicle
Don’t let a faulty module keep you off the road or force you into an expensive trip to the dealership. This replacement BCM is the definitive solution for your 2003-2007 GM vehicle. We take the hassle out of the repair by pre-programming the module to your vehicle’s specific VIN. This means no costly programming fees or special tools are required for installation. We load the latest GM software updates onto the module before it ships, ensuring optimal performance and longevity. This is the most efficient way to restore your vehicle’s electronic functions and get everything working as it should.
Symptoms of a Failing 2003-2007 Silverado BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster behavior, including gauges that don’t work or warning lights that stay on.
- ✔ Interior or exterior lights that flicker, stay on, or won’t turn on at all.
- ✔ Malfunctioning security system or remote keyless entry.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Battery drain caused by components not shutting down properly.
- ✔ Unpredictable behavior of the radio or HVAC controls.
Simple Installation Process
Once you receive your VIN-programmed BCM, the physical installation is straightforward. Simply disconnect the battery, locate your old BCM (typically found under the steering column or in the center dash), swap the electrical connectors to the new module, and reconnect the battery. While the module is plug-and-play, please note the potential need for post-installation procedures below.
Post-Installation Requirements
In some cases, additional electronic relearn procedures may be necessary after installation. These are standard for many electronic module replacements.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor may be required to ensure correct brake light operation and to satisfy the traction control system.
This module is a direct replacement for part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify fitment for your specific vehicle using the list below.
SILVERADO 3500 PICKUP 03-05 Body Control (BCM); (under steering column), exc. crew cab
SILVERADO 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), MT, exc. Crew Cab
SAVANA 1500 VAN 03-07 Body Control (BCM); (center dash)
EXPRESS 1500 VAN 03-07 Body Control (BCM); (center dash)
SIERRA 1500 PICKUP 03-07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab
SILVERADO 1500 PICKUP 03-07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab
And many more 2500/3500 and Van models as listed in the original data.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s VIN before we ship it. This makes the unit ready for installation right out of the box, saving you time and the high cost of dealership programming.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot ship your order until we receive the VIN, as it is essential for correct programming.
Where is the BCM located on my 2004 Silverado?
On most GMT800 trucks like the 2003-2007 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 behind the center dash panel.
Is any special relearn procedure required after installation?
In many cases, the module is fully plug-and-play. However, as noted above, some vehicles may require an airbag system sync or a brake pedal position relearn if specific warning lights appear after installation. These procedures require a professional-grade scan tool.
What if this doesn’t fix my problem?
While a faulty 2003-2007 Silverado BCM is the cause of many electrical issues, proper vehicle diagnostics are key. We recommend confirming the BCM is the fault before ordering. If you are unsure, consult a professional technician. We guarantee the module is properly programmed and functional.