Restore Your Truck’s Electrical System with a Plug-and-Play BCM
Are you dealing with baffling electrical issues in your GM truck or van? Flickering lights, power windows with a mind of their own, or a security system that randomly acts up are classic signs of a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, a faulty BCM can cause a host of frustrating problems that are difficult to trace. This module is the definitive solution, providing a reliable, pre-programmed replacement that gets your vehicle back to 100% functionality without a costly trip to the dealership.
We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash this BCM with the latest GM software specific to your truck or van. It arrives at your door ready for installation. This service saves you time, money, and the headache of having your vehicle towed for programming. This is the smart, efficient way to fix those electrical gremlins for good.
I once had a 2006 Silverado 2500 in the bay that was driving its owner crazy. The dome lights would stay on, the radio wouldn’t turn off with the door open, and the power locks worked intermittently. The owner had already replaced the battery and checked all the fuses. A scan showed a handful of U-codes (communication errors) but nothing pointing to a single failed component. This is a textbook BCM failure scenario. The internal logic of the module starts to break down, causing it to send garbled commands. We swapped in a VIN-programmed BCM like this one, and in under an hour, every single issue was resolved. The customer was thrilled to have his truck back to normal without a massive bill.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need.
- ✔ Erratic power window or power lock operation
- ✔ Interior or exterior lights not working correctly (staying on or not turning on)
- ✔ The security or anti-theft system engaging randomly or preventing the engine from starting
- ✔ The radio or instrument cluster behaving strangely
- ✔ False warnings on the driver information center (e.g., “Service 4WD”)
- ✔ Diagnostic Trouble Codes (DTCs) like U0140, B1001, or other communication codes
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. While the exact location can vary, it’s typically found under the driver’s side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: On most Sierra and Silverado pickups, you’ll find the BCM under the steering column. You may need to remove a lower dash panel for access. For Express and Savana vans, it’s often located in the center dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location as the original. Reconnect all the electrical connectors, ensuring they click securely into place.
- Reconnect Power: Re-attach the negative battery terminal. The vehicle will now power up with the new BCM.
Important Post-Installation Information
Because this 2003-2007 Sierra 3500 BCM is pre-programmed, most functions will work immediately. However, depending on your specific vehicle, a couple of simple relearn procedures may be required:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and stability control function.
We offer a hassle-free experience with no core charge. You can keep your old part without needing to send it back.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part number 15136876 and is also compatible with the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, and 10367689. It fits a wide range of GM models, including:
- 2003-2006 Chevrolet Silverado & GMC Sierra 1500/2500/3500 (Non-Crew Cab)
- 2007 Chevrolet Silverado & GMC Sierra ‘Classic’ (Non-Crew Cab)
- 2003-2007 Chevrolet Express & GMC Savana 1500/2500/3500 Vans
- 2003-2006 Chevrolet SSR
Please verify your specific model and options against the detailed fitment list to ensure compatibility. This 2003-2007 Sierra 3500 BCM is a proven solution for many hard-working trucks and vans.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings for your vehicle’s specific options (like transmission type, 4WD, etc.). This ensures all features work correctly right out of the box.
Is this a difficult part to install myself?
For most DIYers with basic hand tools, this is a very manageable job. The main task is accessing the module under the dashboard. Since we pre-program it, you avoid the most complex part of the job, which is the software setup.
What if my airbag light comes on after installation?
This is a possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Do I have to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module.
Will this fix my truck not starting?
It can. The BCM is a key part of the vehicle’s anti-theft system (Passlock/Passkey). If it fails, it can prevent the engine from starting. If you’re experiencing a no-start condition along with other electrical issues, a faulty BCM is a strong possibility.