Is Your GM Truck or Van Acting Possessed?
Are you dealing with a frustrating mystery of electrical problems? Flickering dashboard lights, power windows with a mind of their own, a radio that cuts out, or a security system that randomly prevents your vehicle from starting? These aren’t just annoyances; they are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of confusing and unpredictable issues.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2005 Silverado 2500 came in last week with the battery light on and intermittent stalling. He had already replaced the battery and the alternator twice, but the problem persisted. A quick scan showed no engine codes, but multiple communication errors with the body modules. We traced it back to the BCM. A failing BCM can send faulty signals that make other perfectly good parts, like the alternator, appear to be bad. Replacing the BCM solved all the issues instantly. It’s a diagnosis I’ve made hundreds of times on these otherwise reliable trucks.”
The Direct Solution: A VIN-Programmed BCM
Stop chasing electrical gremlins and replacing perfectly good parts. This Body Control Module is the definitive solution for your 2003-2007 GM vehicle. We take the guesswork and dealer hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and we will program the module with the latest GM software specific to your exact build. It arrives at your door ready for installation, saving you a trip to the dealership and the high cost of their programming services.
Common Symptoms of a Failing GM BCM Module:
- ✔ Intermittent or non-functional power windows, locks, and mirrors.
- ✔ Erratic instrument cluster behavior (flickering gauges, warning lights).
- ✔ Malfunctioning interior or exterior lighting.
- ✔ Security system faults or vehicle no-start conditions.
- ✔ Unresponsive key fob or remote entry.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
Plug-and-Play Installation & Post-Install Procedures
Installing your new BCM is straightforward. However, to ensure all systems communicate correctly after installation, a few final steps are required using a professional-grade diagnostic scan tool.
- Safety First: Always disconnect the negative battery terminal before working on any vehicle electronics.
- Locate the BCM: On Silverado and Sierra pickups, it’s typically found under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s located in the center dash area.
- Swap the Module: Carefully disconnect the electrical connectors and remove the old BCM. Install the new, pre-programmed module and securely reconnect all connectors.
- Reconnect Battery: Re-attach the negative battery terminal.
- CRITICAL: Airbag System Reset: Using a capable scan tool, perform the ‘Setup SDM Primary Key in BCM’ procedure. This is mandatory to clear the airbag warning light and ensure the safety system is operational.
- Brake Pedal Position Sensor Relearn: Some vehicles may require you to perform a Brake Pedal Position (BPP) Sensor Relearn. This ensures the brake lights and stability control systems function correctly.
This module is a direct replacement for part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Verify your part number and check the detailed fitment list to ensure compatibility with your truck or van.