Tired of Chasing Electrical Gremlins in Your GM Truck or Van?
As a technician with over two decades of experience, I’ve seen it all. A customer comes in with a 2005 Silverado, and the power locks work one minute and not the next. The dome light has a mind of its own, and the security light is flashing, preventing the truck from starting. These aren’t separate problems; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the nerve center for your vehicle’s body electronics, and when it starts to go, it can cause a cascade of frustrating, seemingly unrelated issues. This isn’t just an inconvenience; it can leave you stranded.
We offer a straightforward, reliable solution. This is a direct-replacement BCM, compatible with part number 15136876 and others, for a wide range of GM vehicles. The best part? We handle the programming for you. Simply provide your vehicle’s VIN at checkout, and we’ll flash the module with the latest GM software specifically for your truck or van. It arrives at your door ready to be installed, saving you from expensive diagnostic fees and programming charges at a dealership.
From the Diagnostic Bay
I remember a 2006 Sierra 2500 that came into my shop. The owner had already replaced the battery and checked all the fuses, but his radio would randomly turn off, and his power windows were completely dead. A quick scan showed a dozen communication codes, all pointing to a network issue. After isolating the circuits, we pinpointed the BCM as the culprit. Instead of a multi-day affair involving a tow to the dealer, we installed a pre-programmed module just like this one. In under an hour, all the electrical functions were restored, and the customer drove away with a reliable truck and a much smaller bill. That’s the power of a proper, pre-programmed part.
Is Your Truck or Van Showing These BCM Failure Signs?
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The security system light flashing, causing a no-start condition.
- ✔ The horn honking unexpectedly or not working.
- ✔ Intermittent dashboard warning lights without a clear cause.
- ✔ Diagnostic Trouble Codes (DTCs) related to lost communication, such as U-series codes (e.g., U1000, U0140).
- ✔ A/C compressor clutch not engaging.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a DIYer with basic tools. While locations vary between trucks (under the steering column) and vans (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 and Sierra pickups, it’s typically located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s usually 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 or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: power windows, locks, lights, radio, etc.
Important Post-Installation Steps
Because this is a new, pre-programmed 2003-2007 GM BCM, your vehicle may require one or two final synchronization steps. These are often called ‘relearn procedures’.
- 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 this procedure to ensure brake lights and traction control function correctly. This can also be done with a capable diagnostic tool.
Disclaimer: Always consult a factory service manual for procedures specific to your vehicle’s year and model. If you are not comfortable performing these steps, a qualified technician can complete them quickly.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It fits a wide range of models, including:
- 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)
Please use the fitment chart to confirm compatibility with your specific year, model, and options before ordering. Getting the right 2003-2007 GM BCM is the first step to a successful repair.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages many of your vehicle’s non-engine related electronic systems. This includes power windows, door locks, interior and exterior lighting, the alarm system, and even the radio and climate controls. When it fails, you get strange electrical issues.
How does the VIN programming service work?
After you place your order, you provide us with your vehicle’s 17-digit VIN. We use that number to access the latest official GM software for your specific vehicle and load it onto the BCM before shipping. This ensures it communicates correctly with the other modules in your truck or van.
Is this a simple plug-and-play installation?
For the most part, yes. The physical installation is a direct swap. Because it’s pre-programmed, you avoid the most difficult step (dealership programming). However, as noted, some vehicles may require a simple ‘relearn’ procedure for the airbag or brake systems, which may require a scan tool.
Will I need special tools for the post-installation procedures?
If your vehicle requires the Airbag System Sync or Brake Pedal Position Relearn, you will need a bi-directional professional scan tool. Many local independent repair shops have these tools and can perform the relearn procedures for you if needed.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module, which can be helpful if you ever need to reference its part number or hardware information in the future.