Restore Your GM’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your 2002-2005 GM truck, van, or SUV? Flickering lights, malfunctioning power windows and locks, a security light that won’t turn off, or a vehicle that refuses to start can all point to a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause a host of frustrating and unpredictable problems. Stop throwing parts at the problem and get the definitive fix.
This is a direct-replacement Body Control Module, fully programmed to your vehicle’s specific VIN before it ships. We install the latest GM software updates, which often correct factory flaws and improve performance. This means you can skip the expensive trip to the dealership for programming. This module is a reliable replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU, restoring full functionality and peace of mind.
A Technician’s Notebook: The Case of the Haunted Silverado
A customer brought in a 2002 Silverado 1500 with some of the wildest symptoms I’ve seen. The dome light would randomly turn on while driving, the radio would shut off, and the power locks would cycle on their own. He had already replaced the battery and checked all the grounds. After hooking up my scan tool, I saw multiple U-codes (communication errors) between the BCM and other modules. This is a classic sign. The internal logic of the original BCM was failing, sending junk data across the network. Installing a quality, pre-programmed Programmed GM BCM 15063578 solved every single issue. The customer was thrilled to have his truck back to normal without a massive dealership bill.
Is Your GM Truck or SUV Showing These Signs?
- ✔ Power windows, door locks, or mirrors operate intermittently or not at all.
- ✔ Interior or exterior lights flicker, stay on, or won’t turn on.
- ✔ The security or anti-theft light is illuminated, potentially causing a no-start condition.
- ✔ The horn honks unexpectedly or doesn’t work.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors (U-codes) or BCM internal faults are present.
- ✔ The radio or instrument cluster display behaves erratically.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On models like the Astro, Safari, Blazer, and S-10, the BCM is typically found in the center of the dash, often behind the glove box. On full-size trucks and SUVs (Silverado, Sierra, Tahoe, etc.), it’s usually located under the driver’s side of the dashboard, near the steering column.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, 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 reconnect all electrical connectors, ensuring they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
- ✔ Perform Relearns (If Needed): As noted in our post-installation section, some vehicles may require an airbag system sync or brake pedal position relearn if specific warning lights appear.
Verified Vehicle Compatibility
This Programmed GM BCM 15063578 is a guaranteed fit for the following vehicles. Please verify your model and year before ordering.
- ASTRO / SAFARI (GMC): 2002-2005
- BLAZER S10 / JIMMY S15 / S10 / S15 / SONOMA: 2002-2005
- SILVERADO & SIERRA (1500, 2500, 3500, Denali): 2002
- TAHOE / YUKON: 2002 (4×2 Models)
- SUBURBAN & YUKON XL (1500, 2500): 2002
- AVALANCHE 1500: 2002 (4×2 Models)
- ESCALADE: 2002 (4×2 Models)
Important Post-Installation Information
While this module is programmed for a simple installation, some vehicle systems may require recalibration. This is normal. The two most common procedures are:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary for correct brake light and traction control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as we program each module specifically for your vehicle.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
Is this a difficult part for a DIYer to install?
For most individuals with basic mechanical skills, this is a straightforward replacement. The most challenging part is often accessing the module’s location. Since we handle the programming, you avoid the most complex step of the process.
What tools are needed for the post-installation procedures?
The potential Airbag Sync and Brake Pedal Relearn procedures require a bi-directional scan tool, which is a professional-level diagnostic device. Many local repair shops can perform these relearns for you if needed.
Will this fix my specific electrical problem?
This Programmed GM BCM 15063578 will correct issues caused by a faulty Body Control Module. While the symptoms listed are common indicators, proper vehicle diagnosis is always recommended to confirm the BCM is the source of the problem before ordering.