Tired of Chasing Electrical Gremlins? Your Solution is Here.
If you’re dealing with baffling electrical issues in your Chevrolet SSR, Silverado, Sierra, or GM van, you know the frustration. Power windows with a mind of their own, a security light that won’t turn off, intermittent wipers, or a radio that stays on after you’ve left the vehicle—these aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and security features. When it starts to fail, it can feel like your truck is haunted. This isn’t just a part; it’s the permanent fix for those hard-to-diagnose problems.
We take the biggest headache out of the repair process: programming. Forget about towing your vehicle to a dealership and paying hundreds for a technician to sync a new module. We do the critical work for you. Simply provide your vehicle’s VIN during checkout, and our experts will program this BCM with the latest GM-certified software specific to your vehicle’s options. It arrives at your door ready for a straightforward installation. This is the most efficient way to restore full functionality to your vehicle, saving you significant time and money.
Case Study: A Tricky Diagnosis
I remember a 2005 Silverado 2500 that came into my bay with a complaint of a random no-start and flickering interior lights. The owner had already replaced the battery and alternator. We checked all the main power and ground cables, and they were perfect. A generic scan tool showed no engine codes. However, by using a professional scanner to access the body modules, we found a slew of U-codes (loss of communication) pointing to the BCM. The internal circuitry was failing, causing it to randomly drop communication with the security system, which prevented the truck from starting. Replacing the BCM with a pre-programmed unit like this one solved every single issue instantly. It’s a fix I’ve performed hundreds of times on these GM platforms.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. A failing module can also trigger communication Diagnostic Trouble Codes (DTCs) like U0140, U0155, or various B-series codes.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft light is illuminated, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers operating intermittently or at the wrong speed.
- ✔ HVAC (A/C and heat) controls are unresponsive.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
A Straightforward Guide to Installation
Installing your new BCM is a manageable job for a confident DIYer. While locations vary slightly, the process is similar. Always disconnect the battery before starting any electrical work.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to discharge completely.
- 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 located behind the center dash trim.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off or are held by a few screws.
- Disconnect and Remove: The BCM is held by clips or small bolts. Unplug the multiple electrical connectors—they have locking tabs that need to be depressed. Once disconnected, remove the old BCM.
- Install the New BCM: Mount your new, pre-programmed BCM in place and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock.
- Reconnect and Test: Re-install any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, wipers, etc.
Important Post-Installation Notes
While our programming handles the majority of the setup, some vehicle systems may require a final handshake after the new BCM is installed. Please be aware of the following possibilities:
- Airbag System Sync: If your airbag/SRS warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a bi-directional scan tool to sync the new BCM with the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure brake lights and stability control function correctly. This is also performed with a scan tool.
Will This Fit My Truck or Van?
This BCM is a guaranteed fit for the following vehicles and replaces a wide range of original part numbers, including 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.
- Chevrolet SSR: 2003-2006
- Chevrolet & GMC Silverado / Sierra 1500, 2500, 3500: 2003-2007 (Classic body style for ’07 models, excluding Crew Cab)
- Chevrolet & GMC Express / Savana 1500, 2500, 3500: 2003-2007 (Excluding commercial tradesman package on some models)
Please verify your vehicle is listed in the detailed fitment data. This part is not for Crew Cab models.
Frequently Asked Questions
What do I need to do after I purchase?
After you place your order, you must provide us with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your BCM without it. You can typically send it through the platform’s messaging system or add it as a note to your order.
Is this BCM truly plug-and-play?
Yes, for the vast majority of functions. We handle the critical programming that requires dealer-level equipment. In some cases, as noted above, a simple ‘relearn’ or ‘sync’ procedure for the airbag or brake sensor may be needed with a common professional scan tool.
What tools are required for the installation?
Basic hand tools are usually all that’s needed: a socket set (typically 7mm and 10mm sockets), a ratchet, and possibly a trim removal tool to avoid scratching your dashboard panels. No special electronic tools are needed for the physical installation.
Why is my airbag light on after installation?
This is a normal security measure. The new BCM needs to be electronically introduced to the vehicle’s airbag module (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to turn off the light.
Do I need to send my old BCM back?
No. This purchase requires no core charge or return. You can keep your original part.