Is Your GM Truck or Van Plagued by Bizarre Electrical Problems?
If you’re dealing with flickering lights, malfunctioning power windows, erratic door locks, or a security system that has a mind of its own, 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 starts to fail, it can cause a cascade of frustrating and seemingly unrelated issues. Don’t let a faulty module compromise your truck’s functionality and reliability. This direct-fit, pre-programmed BCM is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop that was giving its owner fits. The dome lights would flicker randomly while driving, and worse, the battery would be dead every few mornings. After checking for the usual suspects like the alternator and battery, we traced the issue to a parasitic draw. The BCM was failing internally, keeping certain circuits active long after the key was turned off. Swapping in a VIN-programmed BCM like this one not only solved the flickering lights but completely eliminated the battery drain, saving the customer from costly diagnostic time and the headache of a vehicle that wouldn’t start.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on, not turning on, or flickering.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Unexplained battery drain that leads to a no-start condition.
- ✔ False warnings on the instrument cluster, such as ‘Service Vehicle Soon’.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers behaving erratically or not parking in the correct position.
The Simple, No-Hassle Solution for Your 2003-2007 Sierra BCM
Forget expensive trips to the dealership for diagnostics and programming. We make the repair process straightforward and accessible for both professional technicians and DIY enthusiasts. When you order this BCM, we handle the critical programming for you. Simply provide us with your vehicle’s 17-digit VIN during checkout. Our technicians will then flash the module with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your vehicle’s specific options and configuration. It arrives at your door ready for a simple, plug-and-play installation.
Installation and Post-Install Procedures
Physically installing the module is straightforward. On most Sierra and Silverado pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. For Express and Savana vans, it’s typically found in the center dash area. After disconnecting the battery, simply unplug the electrical connectors from your old module, remove it, and install the new one in its place. Once reconnected, you are nearly done. However, please be aware of a few potential post-installation steps:
- Airbag System Sync: If the airbag warning light illuminates after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control functionality. This also typically requires a capable scan tool.
Always consult a factory service manual or a qualified technician if you are unsure about any step of the process.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM vehicles and replaces multiple part numbers. Ensure this part is right for you by matching one of the following numbers from your original module:
Part Numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689
This BCM fits a broad selection of 2003-2007 Chevrolet and GMC trucks, vans, and the SSR, primarily non-Crew Cab models. Please review the detailed fitment list to confirm compatibility with your exact year, make, and model.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions. This includes power windows, locks, interior and exterior lighting, security systems, wipers, and more. It acts as a hub, receiving inputs from switches and sending commands to various accessories.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings that your vehicle had when it left the factory. This ensures all your specific options (like keyless entry, power seats, etc.) work correctly right out of the box, making the installation truly plug-and-play.
Will I need to take my truck to a dealer after installation?
No! Our VIN programming service eliminates the need for dealership programming, which can be costly and time-consuming. In most cases, the installation is complete once the module is plugged in. The only exception is if a specific relearn procedure, like for the airbag system, is required for your vehicle.
What happens if my airbag light comes on after I install the new BCM?
If the airbag light is on, it means the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a simple procedure for any qualified repair shop.
The fitment list says ‘exc. Crew Cab’. Will this fit my Crew Cab truck?
No. For the pickup truck models listed (Silverado/Sierra), this specific BCM is for standard and extended cab configurations only, not for Crew Cab models. Please verify your cab configuration before ordering to ensure compatibility.