Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you chasing electrical gremlins in your GM truck or van? Flickering lights, power windows with a mind of their own, or a security system that won’t cooperate are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. Stop throwing parts at the problem. This is a direct-fit, VIN-programmed BCM that restores function and reliability to your vehicle.
We take the guesswork and high cost out of the repair. Unlike a generic part from a big box store, we flash this module with the latest GM software specifically for your vehicle using the VIN you provide. This means it arrives ready to install, saving you a trip to the dealership and their expensive programming fees. It’s the smart, efficient solution for both seasoned mechanics and dedicated DIYers.
Case Study: A Tricky Diagnosis
A 2006 Silverado 2500 rolled into my bay last month with a truly bizarre complaint. The driver said his dome light would randomly turn on while driving, and sometimes the radio would shut off when he used the driver’s side power window. He’d already replaced the window switch and checked grounds. After hooking up the scan tool, I saw no hard codes, but I noticed erratic voltage readings on the BCM data stream whenever an accessory was activated. This pointed to an internal failure in the module’s logic board. We installed a VIN-programmed 2003-2007 GM BCM, and every one of the strange electrical issues vanished. It’s a perfect example of how a single failing module can create a host of confusing symptoms.
Common Signs of a Failing BCM
If your vehicle is exhibiting these symptoms, a faulty BCM is the likely culprit. This module directly addresses these common failure points:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on, flickering, or not working at all.
- ✔ The security system or keyless entry failing to operate correctly (e.g., security light on).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Communication issues with other modules, potentially triggering codes like U0140 (Lost Communication With Body Control Module).
- ✔ Wipers operating intermittently or at the wrong speed.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for most DIYers. While the exact location varies slightly between trucks and vans, the process is generally 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 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 usually behind the center dash panel.
- 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 and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location as the original. Firmly reconnect all electrical connectors, ensuring they click into place.
- Reconnect Battery & Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm proper operation.
Important Post-Installation Information
While our VIN-programming handles the majority of the setup, some GM vehicles may require additional steps after installation:
- ✔ Airbag System Sync: If the airbag warning light is illuminated 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: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control functionality.
- ✔ No Core Charge: You are not required to send your old module back. This saves you time and the hassle of return shipping.
Disclaimer: Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Will This Fit My Vehicle?
This 2003-2007 GM BCM is a direct replacement for a wide range of trucks and vans. It is a compatible replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your vehicle is on the list below:
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic)
- GMC Sierra 1500/2500/3500 (2003-2007 Classic)
- Chevrolet Express 1500/2500/3500 Van (2003-2007)
- GMC Savana 1500/2500/3500 Van (2003-2007)
- Chevrolet SSR (2003-2006)
Note: Please check the specific options in the original description to ensure an exact match for your vehicle’s configuration (e.g., cab type, transmission).
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your vehicle’s VIN before we ship it. It arrives ready for installation, though some vehicles may require a minor relearn procedure as noted above.
What does ‘no core charge’ mean?
It means you do not have to return your original, faulty BCM to us. This saves you the cost and hassle of a core deposit and return shipping.
Will this fix my specific electrical problem?
This module corrects issues directly caused by a failing BCM, such as problems with power locks, windows, lights, and the security system. While it solves the most common electrical faults, always ensure your vehicle has been properly diagnosed.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side of the dashboard, visible through the windshield.
What tools are needed for the post-install procedures?
The Airbag System Sync and Brake Pedal Position Relearn require a professional-grade bidirectional scan tool. Many local repair shops can perform these procedures if they are needed for your vehicle.