Is Your GM Truck or Van Acting Possessed?
Are you dealing with a vehicle that seems to have a mind of its own? Flickering interior lights that won’t turn off, power windows that refuse to budge, or a security light that stays on, preventing your truck from starting. These aren’t just annoyances; they’re classic signs that the Body Control Module (BCM)—the electronic nerve center of your vehicle—is failing. In my 20+ years as a technician, I’ve seen how a faulty BCM can turn a reliable workhorse into a frustrating, unpredictable machine.
Real-World Diagnosis: “A customer’s 2005 Silverado 2500 came into the shop last month with a dead battery every morning. He’d already replaced the battery and alternator. After a quick parasitic draw test, we traced the issue to the BCM, which was keeping the courtesy light circuit active long after the doors were closed. It’s a textbook failure for these modules, often caused by internal circuit board corrosion over time. Replacing the BCM was the only correct fix.”
Common Symptoms of a Failing BCM
If you’re experiencing any of the following, a failing BCM is the likely culprit:
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft system acting up, causing no-start conditions.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Wipers behaving erratically (e.g., won’t turn off).
- ✔ Communication errors with other vehicle modules (DTCs).
The Direct-Fit, Programmed Solution for Your 2003-2007 GM BCM
Forget the hassle and expense of a dealership visit. This Body Control Module is the definitive solution for your 2003-2007 GM truck, van, or SSR. We take all the guesswork 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 specifically for your vehicle’s options and configuration. It arrives at your door ready for installation, saving you hundreds in dealer programming fees and diagnostic time.
Simple Installation to Get You Back on the Road
Installing your new BCM is straightforward. While specific locations vary slightly between a pickup (under the steering column) and a van (center dash), the process is similar.
- Safety First: Always disconnect the negative battery terminal before working on any vehicle electronics.
- Locate the BCM: On Silverado/Sierra models, it’s typically located under the driver’s side dash, near the steering column. On Express/Savana vans, it’s behind the center dash trim.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the old module and remove it.
- Install the New Module: Bolt the new, pre-programmed BCM into place and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock in.
- Reconnect Battery: Reattach the negative battery terminal.
- CRITICAL – Post-Installation Procedures: After installation, two key procedures are required for full system functionality. These must be performed with a compatible high-level scan tool:
– Airbag System Reset: Perform the ‘Setup SDM Primary Key in BCM’ procedure. This step is mandatory to clear the airbag warning light and ensure the safety system is operational.
– Brake System Check: Some vehicles may require a ‘Brake Pedal Position Sensor Calibration’ to ensure proper communication between the BCM and the brake system.
This Module is a Direct Replacement for Part Numbers:
This BCM is compatible with and replaces the following GM part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Verify your part number to ensure a perfect match for your vehicle.