2002

Restore Your Truck’s Electrical System

Tired of flickering lights, faulty power locks, or a no-start condition in your 2002 GM truck? This Body Control Module, pre-programmed to your VIN, is the definitive fix. It solves common electrical issues and arrives ready for installation. Get back on the road with confidence—order yours today!

$224.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-06642-10 Categories: ,
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Restore Your Truck’s Brain and Banish Electrical Gremlins

If you’re dealing with the maddening, unpredictable electrical issues common in older GM trucks and vans, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen it all: dome lights with a mind of their own, power windows that refuse to budge, a security light that won’t turn off, or a truck that simply won’t start. More often than not, the culprit is a failing Body Control Module (BCM). This isn’t just an inconvenience; it’s the central command for your vehicle’s comfort and security features. A faulty BCM can make your reliable truck feel haunted.

This isn’t just a replacement part; it’s a complete solution. We offer a professionally prepared Body Control Module, a direct replacement for part number 15063578 and other interchangeable numbers. The real value is in our service: we flash the module with the latest GM software updates and program it specifically to your vehicle’s VIN before it ships. This means you can bypass the expensive trip to the dealership for programming. For a DIY mechanic or an independent shop, this saves significant time, money, and hassle, getting your truck back to perfect working order faster.

From the Diagnostic Bay: The Case of the Haunted Silverado

“A customer brought in his 2002 Silverado 1500 last month, completely fed up. The radio would randomly shut off, the power locks would cycle while driving, and sometimes the instrument cluster would go dark for a few seconds. He’d already replaced the battery and checked all the grounds. On the scan tool, I saw a handful of ‘Loss of Communication’ codes with various modules. This intermittent, widespread chaos is a classic sign. Instead of chasing individual component ghosts, we went straight for the source. After installing a pre-programmed 2002 Sierra BCM (the same part family), every single one of his phantom electrical issues vanished. It’s a repair that brings immense relief to owners who thought they were in for a diagnostic nightmare.”

Is Your GM Truck or Van Showing These Symptoms?

A failing BCM can manifest in numerous ways. If your vehicle is experiencing any of the following, a faulty Body Control Module is the most likely cause:

  • ✔ Intermittent or non-functional power windows, door locks, or mirrors.
  • ✔ Erratic interior or exterior lighting (flickering, staying on, or not working at all).
  • ✔ The security or anti-theft system light stays on, preventing the engine from starting.
  • ✔ Horn honking unexpectedly or not working when pressed.
  • ✔ Inaccurate or dead gauges on the instrument panel.
  • ✔ Warning lights, such as the airbag light, illuminating for no reason.
  • ✔ Communication errors with other vehicle modules (DTCs U-codes).

A Straightforward Guide to Your BCM Replacement

Installing your new BCM is a manageable job for a confident DIYer. While the exact location varies slightly by model (see fitment list), the process is generally similar. This is a direct replacement for your original 2002 Sierra BCM.

  1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow all systems to discharge.
  2. Locate the BCM: On most trucks like the Sierra/Silverado, it’s located under the driver’s side of the dashboard, near the steering column. On vans like the Astro/Safari, it’s often behind the center dash panel.
  3. Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
  4. Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical harnesses, ensuring each plug clicks firmly into place.
  5. Reconnect Power: Re-attach the negative battery terminal.
  6. Perform Final Steps: Turn the key to the ‘ON’ position and verify that basic functions are restored. As noted below, critical post-installation procedures are required for safety systems.

Important Post-Installation Procedures

After replacing your Body Control Module, a few final steps are essential to ensure all vehicle systems operate correctly and safely. These procedures require a professional-grade diagnostic scan tool.

  • Airbag System Reset: To clear the airbag warning light, you must perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes the security handshake between the new BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
  • Brake Pedal Position Sensor (BPPS) Relearn: On some models, the BCM replacement may require a recalibration of the brake pedal position sensor. This is critical for proper brake light operation and anti-lock brake system (ABS) function.

Note: If you are not equipped or comfortable performing these relearn procedures, we strongly recommend seeking assistance from a qualified professional technician.

Verified Vehicle Compatibility List

This module is a guaranteed fit for the following vehicles and options. Please verify your part number (15063578, 15081796, 15095334, 19208537, DKAK, DPNU) for a perfect match.

AVALANCHE 1500 02 Body Control (BCM); (under steering column), 4×2
ASTRO 02-05 Body Control (BCM); (center dash)
BLAZER S10/JIMMY S15 02-05 Body Control (BCM); (center dash)
ESCALADE 02 Body Control (BCM); (under steering column), 4×2
S10/S15/SONOMA 02-04 Body Control (BCM); (center dash)
SAFARI (GMC) 02-05 Body Control (BCM); (center dash)
SIERRA 1500 PICKUP 02 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 02 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 02 Body Control (BCM); (under steering column)
SIERRA DENALI 02 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 02 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 02 Body Control (BCM); (under steering column)
SILVERADO 3500 PICKUP 02 Body Control (BCM); (under steering column)
SUBURBAN 1500 02 Body Control (BCM); (under steering column), 4×2
SUBURBAN 2500 02 Body Control (BCM); (under steering column)
TAHOE 02 Body Control (BCM); (under steering column), 4×2
YUKON 02 Body Control (BCM); (under steering column), 4×2
YUKON XL 1500 02 Body Control (BCM); (under steering column), 4×2
YUKON XL 2500 02 Body Control (BCM); (under steering column)

Frequently Asked Questions

Do I really need to provide my VIN?

Yes, absolutely. Providing your VIN is the most critical step. We use it to load the correct software and vehicle-specific options into the BCM, ensuring it communicates properly with your truck’s other modules right out of the box.

Will this fix my ‘Service 4WD’ light?

While a BCM can cause a variety of issues, the ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM) or the encoder motor/sensor on the transfer case. It’s best to diagnose that specific system first.

Is this a simple plug-and-play installation?

The physical installation is plug-and-play because we handle the programming. However, as mentioned, you will need a scan tool to perform the ‘Setup SDM Primary Key’ and potentially a brake pedal relearn to ensure all safety systems are fully operational.

What happens if I don’t do the airbag system reset?

The airbag warning light on your dashboard will remain illuminated, and more importantly, the airbag system may not deploy correctly in the event of an accident. This is a critical safety step that should not be skipped.

How do I find the part number on my old BCM?

Once you locate and remove your original BCM, there will be a sticker on the housing. This sticker contains the GM part number (e.g., 15063578) and may also have a broadcast code (e.g., DKAK).

MPN

15063578

Genuine OEM

Yes

Interchange part number

Condition

Refurbished

Model

Sierra

Make

Year

2002

Brand

GM

Manufacturer Part Number

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