If you’re dealing with bizarre electrical issues in your GM truck or van—like power windows with a mind of their own, flickering interior lights, or a security system that randomly prevents your vehicle from starting—you’ve likely pinpointed the culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and convenience features, a faulty BCM can turn your reliable workhorse into a source of daily frustration. This isn’t just an inconvenience; it can affect vehicle security and safety.
Forget the expensive trip to the dealership and the long wait for an appointment. We offer a direct, reliable solution. This Body Control Module, compatible with part number 15194169 and others, arrives at your door programmed specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after purchase, and our technicians will flash the module with the latest GM software updates. This ensures it communicates perfectly with your truck’s existing systems, making the installation process as straightforward as possible.
A Technician’s Notebook: The Phantom Electrical Problem
I once had a 2006 Silverado 2500 in my bay that was driving the owner crazy. The radio would cut out, the power locks would cycle on their own, and the dash would occasionally flash a ‘Service 4WD’ light, even though the 4WD system was mechanically sound. After hours of chasing wires and checking grounds, all diagnostics pointed to the BCM. These modules are notorious for internal solder joint failures that cause intermittent, confusing symptoms. We swapped in a VIN-programmed BCM, and every single issue vanished instantly. It’s a classic case where the central ‘brain’ for body electronics was causing chaos everywhere else.
Common Signs of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors operate intermittently or not at all.
- ✔ Interior dome lights or dashboard lights flicker, stay on, or won’t turn on.
- ✔ The horn honks unexpectedly or doesn’t work when pressed.
- ✔ Vehicle’s security system acts erratically, causing no-start conditions (often with a security light on the dash).
- ✔ Communication issues that may trigger diagnostic trouble codes (DTCs) like B1001, U0140, or other ‘U’ codes.
- ✔ Wipers behaving erratically, either not working or not turning off.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down.
- ✔ Locate the BCM: On most Silverado and Sierra pickups, the BCM is located under the driver’s side of the steering column. For Express and Savana vans, it’s typically found behind the center dash panel.
- ✔ Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off with a trim removal tool or are held by a few screws.
- ✔ Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Post-Installation Checks: Reconnect the battery. Turn the key to the ‘ON’ position (without starting) and test all body functions: windows, locks, lights, wipers, and radio. Refer to the post-installation procedures below if any warning lights appear.
Important Post-Installation Note: In some cases, additional steps may be required. If the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ may be necessary. Always consult a factory service manual for vehicle-specific instructions.
Will This Fit My Truck or Van?
This 2003-2007 GM BCM is a direct-fit replacement for a wide range of GM vehicles. Please verify your part number against the list below and confirm your vehicle’s make, model, and year from the fitment chart. This module replaces the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689.
This part is confirmed to fit models including the Chevrolet Silverado 1500/2500/3500, GMC Sierra 1500/2500/3500, Chevrolet Express Van, GMC Savana Van, and Chevrolet SSR from 2003 to 2007, with specific options as detailed in the fitment data. It is a reliable solution for your vehicle’s electronic needs.
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 allows for a much simpler installation process without the need for expensive dealer-specific tools.
Is there a core charge? Do I have to send my old part back?
There is absolutely no core charge for this part. You can keep your original module.
What tools are needed for the post-installation procedures?
The ‘Airbag System Sync’ and ‘Brake Pedal Position Relearn’ procedures require a high-level, bi-directional diagnostic scan tool, such as a GM Tech 2 or equivalent professional-grade scanner. Most basic code readers cannot perform these functions.
What happens if I install it and the airbag light comes on?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). A mechanic with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this and turn off the light.
Will this fix my specific electrical problem?
The BCM controls most of the vehicle’s interior and body electronic functions. If you are experiencing multiple issues like faulty power locks, windows, lights, and security system problems, a failing BCM is the most likely cause. This part is designed to correct those exact symptoms.