Restore Full Electrical Function to Your GM Vehicle
Are you chasing down frustrating electrical gremlins in your truck or SUV? Intermittent power windows, door locks 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 a technician with over two decades of experience, I’ve seen how a faulty BCM can make a perfectly good vehicle feel unreliable. This isn’t just an inconvenience; it can affect your vehicle’s security and safety systems. That’s why we offer a straightforward, dependable solution.
This BCM, part number 15081796, is the central hub for your vehicle’s body electronics. We take the guesswork and hassle out of the replacement process. Simply provide your vehicle’s VIN during checkout, and our experts will program the module with the latest GM-certified software specifically for your truck or SUV. It arrives at your door ready for installation, saving you a trip to the dealership and the high costs associated with their programming services. This is the most direct path to getting your vehicle back to 100% functionality.
A Technician’s Notebook: The 2002 Sierra Ghost
A 2002 GMC Sierra 1500 rolled into my bay with a list of bizarre symptoms the owner called “the ghost.” The radio would switch off, the driver’s power window worked only when it wanted to, and the security light would flash randomly, sometimes preventing the truck from starting. Standard diagnostics pointed to a communication breakdown. After checking the main network, all signs pointed to the BCM. Instead of tying up the vehicle and my expensive scan tool for programming, we ordered a Programmed BCM 15081796. It arrived the next day, we installed it in under 30 minutes, and every single electrical issue was gone. The customer was thrilled with the fast turnaround, and we saved valuable bay time. This is the smart way to handle these common GM BCM failures.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights failing to work correctly.
- ✔ The anti-theft or security system light is illuminated, potentially causing a no-start condition.
- ✔ The horn sounds randomly or doesn’t work when pressed.
- ✔ Communication Diagnostic Trouble Codes (DTCs), often U-codes like U0140, indicating a loss of communication with the BCM.
- ✔ Inconsistent or non-functional dashboard warning lights.
- ✔ Problems with the radio or climate control functions.
Your Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On models like the Astro, Safari, S10, and Blazer, the BCM is typically located in the center of the dashboard. For full-size trucks and SUVs (Silverado, Sierra, Tahoe, Yukon), it’s usually found under the driver’s side of the dashboard, near the steering column.
- ✔ Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of your screws and clips.
- ✔ Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Post-Installation Checks: Reconnect the battery. Start the vehicle and test all related functions: windows, locks, lights, horn, and radio. Address any warning lights as noted in the post-installation procedures below.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- Astro / Safari (GMC): 2002-2005 (Located in center dash)
- Avalanche 1500: 2002 (4×2 models, under steering column)
- Blazer S10 / Jimmy S15: 2002-2005 (Located in center dash)
- Escalade: 2002 (4×2 models, under steering column)
- S10 / S15 / Sonoma: 2002-2004 (Located in center dash)
- Sierra 1500 / 2500 / 3500 / Denali: 2002 (Under steering column)
- Silverado 1500 / 2500 / 3500: 2002 (Under steering column)
- Suburban 1500 / 2500: 2002 (Under steering column, 1500 is 4×2 models)
- Tahoe: 2002 (4×2 models, under steering column)
- Yukon / Yukon XL 1500 / Yukon XL 2500: 2002 (Under steering column, Yukon & XL 1500 are 4×2 models)
Important Post-Installation Information
While our Programmed BCM 15081796 is designed for a simple installation, some vehicle systems may require a recalibration procedure after the new module is installed. This is normal. Key procedures include:
- 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 your brake lights and traction control system function correctly.
Disclaimer: Vehicle systems vary. Always have a factory service manual available for your specific model or consult with a qualified professional if you are unsure about any step.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings that your vehicle had when it left the factory, plus any available GM updates. This ensures compatibility and proper function of all your vehicle’s features.
Do I need to send my old BCM back?
No. This purchase comes with no core charge. You can keep your original module, which can be helpful for double-checking part numbers or for your own records.
Is this a difficult part to replace for a DIYer?
For most DIYers with basic tools, this is a very manageable job. The most common locations are under the dash or behind a trim panel. Our installation guide above provides the general steps. The key benefit is that our pre-programming eliminates the most difficult step: the software setup.
What happens if my airbag light comes on after I install it?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the vehicle’s airbag control module (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be done by most professional repair shops with a capable diagnostic tool.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. If you have a check engine light, the issue is likely with a different component, such as the Engine Control Module (ECM) or a sensor. A BCM replacement will solve issues related to power accessories, security, and internal communication.
What tools are required for the post-installation procedures?
The Brake Pedal Position Relearn can sometimes be done with a sequence of key turns and pedal presses, but a professional scan tool is the most reliable method. The Airbag System Sync absolutely requires a professional-grade diagnostic tool with security access.