Fix Your Truck’s Electrical Gremlins for Good
If your 2003-2007 Chevrolet Silverado 2500 is suffering from bizarre electrical issues like flickering lights, a dead instrument cluster, or a climate control system with a mind of its own, you’ve likely met the common failure point: the Body Control Module (BCM). As an experienced technician, I’ve seen these exact symptoms hundreds of times. The BCM is the central command for your truck’s body electronics, and when it fails, it can cause a cascade of frustrating and hard-to-diagnose problems. This replacement BCM, part number 15194170, is the definitive solution to restore full functionality and reliability to your vehicle.
We make this repair simple with our professional Cloning Service. You send us your original BCM, and we expertly transfer all of its critical data—including your vehicle’s VIN and specific options—to this replacement unit. The result? A truly plug-and-play module that requires no expensive trip to the dealership for programming. It arrives at your door ready for installation, saving you time, money, and headaches. This is the most effective way to address issues stemming from a faulty 2003-2007 Silverado 2500 BCM.
A Technician’s Notebook: The Intermittent No-Start
A customer brought in his ’05 Sierra 2500 that would randomly refuse to start. The battery was good, the starter was fine, but the security light would flash. He’d already replaced several parts with no luck. After connecting my scanner, I saw a slew of communication loss codes (U-codes) pointing to the BCM. These modules often fail internally, causing grounding issues or data corruption that disrupts the PassLock security system. By providing a cloned BCM, we transferred his original security key data. The truck started on the first try and never had the issue again. It’s a classic BCM failure I’ve diagnosed over 500 times on these GM HD trucks.
Is Your Truck Showing These Symptoms?
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft system prevents the engine from starting.
- ✔ HVAC and climate controls are unresponsive or the blower motor works sporadically.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Communication loss codes (U-codes) or other body-related diagnostic trouble codes are present.
- ✔ Wipers, radio, or other accessories behave erratically.
A Straightforward Guide to BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning work.
- ✔ Locate the Module: On most Silverado and Sierra models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large multi-pin connectors.
- ✔ Swap the Modules: Carefully unplug the color-coded connectors from your old BCM. Remove any mounting screws or clips holding it in place. Install the new, cloned module and securely re-attach all connectors.
- ✔ Reconnect Power: Re-attach the negative battery terminal.
- ✔ Verify Functionality: Start the vehicle and test all body functions: lights, locks, windows, wipers, and HVAC to ensure everything is working correctly.
- ✔ Post-Installation Checks: In some cases, an airbag light may persist. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. A Brake Pedal Position relearn may also be needed.
By choosing our cloning service for your 2003-2007 Silverado 2500 BCM, you get a reliable, OEM-spec part that’s ready to go right out of the box, restoring your truck to its proper working order.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15194170 and other interchangeable parts on a wide range of GM trucks and SUVs. Please verify your part number before ordering. It is compatible with the following models:
GMC: Sierra 1500/2500/3500 & Denali (03-07 Classic), Yukon & Yukon XL 1500/2500 (03-06).
Cadillac: Escalade, ESV, EXT (03-06).
Hummer: H2 (03-07).
This module is interchangeable with part numbers: 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 10367690, 15064149.
Frequently Asked Questions
What is a BCM Cloning Service?
Cloning is a service where we transfer the specific software and vehicle identification number (VIN) from your original, failing BCM to your new replacement module. This makes the new part a perfect digital match for your truck, eliminating the need for expensive and time-consuming dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. We will return your original module along with your newly programmed replacement unit. We do not keep the core.
Is this a difficult part for a DIYer to install?
Not at all. The BCM is typically held in by a few clips or screws and is accessible from under the driver’s side dashboard. With basic hand tools, the physical swap takes less than 15 minutes. Our cloning service handles the complicated software side for you.
My airbag light is on after installing the new BCM. What do I do?
This is a known possibility. The BCM and the airbag system (SDM) are linked for security. If the light stays on, a technician with a bi-directional scan tool will need to perform a procedure called ‘Setup SDM Primary Key in BCM’ to re-sync the two modules. This is a quick procedure for any professional shop.
Will this fix my no-start problem?
If your no-start issue is caused by the anti-theft or security system being triggered by a faulty BCM, then yes, this is the correct repair. A flashing security light is a strong indicator of a BCM-related problem.
What is the warranty on this 2003-2007 Silverado 2500 BCM?
This part comes with a one-year warranty, ensuring it provides lasting reliability for your vehicle. We stand behind the quality of our parts and programming services.