Restore Your Vehicle’s Electrical Brain and End Frustrating Glitches
Are you chasing down bizarre electrical problems in your GM truck or van? Flickering lights, power windows with a mind of their own, or a security light that won’t turn off 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 confusing issues. This isn’t just an inconvenience; it can affect vehicle security and safety systems. Stop guessing and replace the root cause with a reliable, pre-programmed solution.
We make this repair straightforward. Unlike a junkyard part or a blank module from the dealer, this BCM arrives at your door already programmed with the latest GM software, specifically matched to your vehicle’s VIN. This crucial step ensures all your vehicle’s original features work as intended, saving you from a costly trip to the dealership for programming. It’s the most efficient way to get your truck or van back to 100% functionality.
A Technician’s Notebook: The 2005 Sierra with a Ghost
I had a 2005 Sierra 2500 in my bay that was driving the owner crazy. The radio would stay on after he shut the truck off, the dome light would flicker randomly, and occasionally the power locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of U-codes (communication errors) pointing to a network issue. In my 20+ years of experience, these ghost-like, unrelated symptoms almost always lead back to one culprit: the BCM. The internal logic fails, and it starts sending corrupt data across the network. We installed one of our VIN-programmed BCMs, and every single issue was resolved instantly. It’s a textbook case of how a single module can wreak havoc on an entire vehicle.
Is Your GM Truck or Van Showing These BCM Failure Signs?
- âś” Intermittent or non-working power windows, door locks, or mirrors.
- âś” Interior or exterior lights that flicker, stay on, or don’t work at all.
- âś” The security or anti-theft light is illuminated, potentially causing a no-start condition.
- âś” Horn sounds unexpectedly or doesn’t work when pressed.
- âś” False warnings on the instrument cluster (e.g., “Door Ajar”).
- âś” Communication error codes, often in the U-series (e.g., U0140, U0155), stored in other modules.
- âś” Wipers behaving erratically or not parking in the correct position.
Your Straightforward BCM Installation Guide
- âś” Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- âś” Locate the BCM: On most Silverado and Sierra pickups, you’ll find it under the driver’s side of the dashboard, near the steering column. For Express and Savana vans, it’s typically located behind the center dash panel.
- âś” Remove Connectors: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Do not force them.
- âś” Swap the Module: Unbolt or unclip the old BCM and remove it. Install the new, pre-programmed module in its place and secure it.
- âś” Reconnect Everything: Plug all the electrical connectors firmly into the new BCM. Reconnect the negative battery terminal.
- ✔ Test Functions: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair.
Important Post-Installation Steps
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new BCM. Be aware of the following potential 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: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge or deposit associated with this purchase.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part number 15136224 and also interchanges with the following part numbers: 15167329, 15194169, 15747545, 15116065, 15198115, 15136876, and 10367689. It is confirmed to fit the following vehicles (please check options carefully):
SIERRA 1500/2500/3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab (check transmission options)
SILVERADO 1500/2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), exc. Crew Cab
SILVERADO 1500/2500/3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab (check transmission options)
EXPRESS 1500/2500/3500 VAN 03-07 Body Control (BCM); (center dash), check package options
SAVANA 1500/2500/3500 VAN 03-07 Body Control (BCM); (center dash), check package options
SSR 03-06 Body Control (BCM)
Frequently Asked Questions
Why does this BCM need my VIN?
We use your Vehicle Identification Number (VIN) to program the module with the exact software and settings your vehicle had from the factory. This ensures all your specific options (like power seats, keyless entry, etc.) work correctly without a trip to the dealer.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the physical swap is relatively simple. It involves removing a few dash panels and unplugging connectors. The key benefit of our product is that the difficult part—the software programming—is already done for you.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the Passlock and Passkey anti-theft systems. A failing BCM is a very common cause of these warnings and related no-start issues.
What happens if my airbag light comes on after installation?
This is a known possibility. The new BCM needs to be electronically introduced to the airbag control module (SDM). This requires a ‘Setup SDM Primary Key’ procedure using a bi-directional scan tool, which most professional repair shops can perform.
Do I have to send my old part back?
No. We do not require you to return your original module. There is no core charge, so you can keep your old part.