Restore Control and Reliability to Your GM Truck or Van
If you’re battling bizarre electrical issues in your Silverado, Sierra, Express, or Savana, you’re not alone. Flickering interior lights, power windows with a mind of their own, a security light that won’t turn off, or a battery that drains overnight are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it’s a reliability issue that can leave you stranded.
This replacement BCM is your direct-fit, hassle-free solution. We take the guesswork and expensive dealership trips out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will flash this module with the latest, most stable GM software specific to your truck or van. It arrives at your door ready to be installed, restoring the factory-correct operation of your vehicle’s essential features. Get back the peace of mind that comes with a dependable ride.
A Technician’s Notebook: The Ghost in the 2005 Silverado
A customer brought in his ’05 Silverado 2500 with a list of complaints that sounded like the truck was haunted. The radio would randomly shut off, the dome light would flicker while driving, and sometimes the power locks wouldn’t respond to the fob. He’d already replaced the battery twice. A scan showed a handful of ‘U’ codes, specifically U0140 (Lost Communication With Body Control Module). Instead of chasing individual component failures, my experience pointed straight to the BCM. These modules, especially in work trucks, see a lot of vibration and thermal cycles. The internal solder joints and processors can fail, causing these intermittent, seemingly unrelated issues. We installed a VIN-programmed BCM, and every single electrical gremlin vanished. It’s a textbook example of how a single module can wreak havoc on an entire system.
Is Your Truck or Van Showing These BCM Failure Signs?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft system light stays illuminated, preventing the engine from starting.
- ✔ Unexplained battery drain that leaves you with a dead battery.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B-series codes for body components.
- ✔ Wipers operating erratically or not parking in the correct position.
A Straightforward Guide to Your BCM Swap
Installing your new BCM is a manageable job for a DIYer with basic tools. While the exact location varies between trucks and vans (under the steering column vs. center dash), the process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On Silverado/Sierra pickups, it’s typically located under the driver’s side of the dashboard, near the steering column. On Express/Savana vans, it’s often behind the center dash trim. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully 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: Seat your new, pre-programmed BCM onto the mounting bracket and plug in the electrical connectors. Ensure they click securely into place.
- Post-Installation Steps: Reconnect the negative battery terminal. Start the vehicle and test all functions (lights, windows, locks, etc.). In some cases, additional steps are needed. If the airbag light is on, an ‘Airbag System Sync’ may be required by a shop with a capable scan tool. A ‘Brake Pedal Position Relearn’ might also be necessary on certain models.
- No Core Charge: That’s it! There’s no need to send your old part back. You’re done.
Verified Fitment For Your GM Vehicle
This BCM is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following vehicles with the specified options:
CHEVROLET EXPRESS/GMC SAVANA VANS (1500, 2500, 3500) 2003-2007 (Specific options apply, see list)
CHEVROLET SILVERADO/GMC SIERRA PICKUPS (1500, 2500, 3500) 2003-2007 (Specific options apply, including ‘Classic’ body style, cab type, and transmission. Please verify your vehicle against the detailed list provided.)
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, this is a critical step. Providing your VIN allows us to load the exact software and vehicle-specific options your truck or van was built with. This ensures seamless integration and proper function of all body electronics, saving you a costly trip to the dealership for programming.
Is this a plug-and-play part?
For most vehicles, yes. Because we program it to your VIN, the core functions will work upon installation. However, as with any BCM replacement, some vehicles may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ which requires a bi-directional scan tool. This is dependent on your vehicle’s specific configuration.
What if my original part number isn’t 15167329?
No problem. This module is a direct replacement for a range of part numbers, including 15194169, 15747545, 15136224, and others listed in the description. As long as your original part number is on our interchange list, this module will work perfectly.
Do I have to return my old BCM?
No. We do not require you to send back your original module. There is no core charge associated with this purchase, which simplifies the process for you.
Where is the BCM located on my 2004 Silverado?
On most 2003-2007 Silverado and Sierra pickups (non-Crew Cab models), the BCM is located under the driver’s side dashboard, to the left of the steering column. You will likely need to remove the lower knee bolster panel to access it.