2002 – 2004

Restore Your Vehicle’s Electronics

End the frustration of failing power accessories and no-start conditions with this pre-programmed GM Body Control Module. We flash it to your VIN with the latest GM software, ensuring it’s ready to install right out of the box. Get your GM running right again—order today!

$224.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-06642-20 Categories: ,
Guaranteed Safe Checkout

Tired of Your GM’s Electrical Gremlins?

Are you chasing down bizarre electrical issues in your GM truck, van, or SUV? One minute the power windows work, the next they don’t. The security light is flashing, preventing your vehicle from starting. Or maybe the interior lights have a mind of their own. As a technician with over two decades of experience, I can tell you these aren’t random problems—they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central hub for your vehicle’s body electronics, and when it starts to go, it can cause system-wide chaos.

This isn’t just an annoyance; it’s a reliability issue. A faulty BCM can leave you stranded. This replacement GM Body Control Module is the definitive solution to restore order and get your vehicle operating as it should. We take the guesswork and high dealership costs out of the equation. Simply provide us with your vehicle’s VIN at checkout, and we will flash this module with the latest, most stable GM software specific to your truck or SUV. It arrives at your door ready for installation, saving you a trip to the dealer and expensive programming fees.

From the Diagnostic Bay

“A customer brought in his 2002 GMC Sierra 2500 last month with a complaint that was driving him crazy. The radio would randomly turn off, the power locks would cycle while driving, and sometimes the truck just wouldn’t start, with the security light blinking on the dash. He’d already replaced the battery and checked the grounds. After hooking up my scan tool, I found a series of communication codes, including a persistent U0140 – Lost Communication With Body Control Module. This pointed directly to an internal BCM failure. Instead of a costly dealer part and programming, we installed one of these VIN-programmed modules. The electrical chaos stopped immediately, and the truck has been running perfectly ever since. It’s a solid fix that saves time and money.”

Is Your GM Truck or SUV Showing These Signs?

If you’re experiencing any of the following, a failing BCM is the most likely culprit. Don’t keep chasing symptoms; address the root cause.

  • ✔ Erratic or non-functional power windows, door locks, and mirrors.
  • ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
  • ✔ A flashing security or anti-theft light that causes a no-start condition.
  • ✔ The radio or climate control system behaving unpredictably.
  • ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or B-series codes pointing to body circuits.
  • ✔ Inconsistent operation of the keyless entry system.

A Straightforward Guide to Installation

Installing your new GM Body Control Module is a manageable job for a DIYer with basic tools. The location varies slightly by model, but it’s generally found under the driver’s side dash or behind the center dash panel.

  1. Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
  2. Locate the BCM: On most trucks and SUVs (Silverado, Sierra, Tahoe, Yukon), it’s located under the steering column. On vans (Astro, Safari) and S-series trucks, it’s often behind the center dash area. Remove any necessary trim panels to gain access.
  3. Disconnect and Remove: Carefully 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.
  4. Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
  5. Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc.
  6. Perform Final Procedures: After installation, two critical steps may be required. Use a capable scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear any airbag lights. Some vehicles may also need a Brake Pedal Position Sensor recalibration. If you are unable to perform these, a local repair shop can complete them for you.

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 GM models:

  • Chevrolet Avalanche 1500: 2002 (4×2)
  • Chevrolet Blazer S10: 2002-2005
  • Chevrolet S10 Pickup: 2002-2004
  • Chevrolet Silverado 1500/2500/3500 Pickup: 2002
  • Chevrolet Suburban 1500/2500: 2002
  • Chevrolet Tahoe: 2002 (4×2)
  • Chevrolet Astro Van: 2002-2005
  • GMC Jimmy S15: 2002-2005
  • GMC Sonoma S15 Pickup: 2002-2004
  • GMC Sierra 1500/2500/3500 Pickup: 2002
  • GMC Sierra Denali: 2002
  • GMC Yukon & Yukon XL 1500/2500: 2002
  • GMC Safari Van: 2002-2005
  • Cadillac Escalade: 2002 (4×2)

Note: Please verify your original part number or specific vehicle options from the list to ensure a perfect match.

Frequently Asked Questions

What exactly does a Body Control Module do?

The BCM acts as the central computer for your vehicle’s non-engine related functions. It controls the power windows, locks, lights, security system, wipers, and other comfort and convenience features.

Why do you need my VIN to program the BCM?

Your Vehicle Identification Number (VIN) allows us to flash the BCM with the exact software and calibrations your specific vehicle requires. This ensures all features work correctly and that the module communicates properly with other computers in the vehicle, making it a true plug-and-play solution.

Is this part difficult to install myself?

For someone with basic mechanical skills, this is a very straightforward installation. It typically involves removing a few dash panels and unplugging the old unit to plug in the new one. No special tools are needed for the physical replacement, but a capable scan tool is recommended for post-installation procedures.

Will this fix my flashing security light and no-start problem?

In the vast majority of cases, yes. A faulty BCM is the number one cause of issues with the GM Passlock security system. Replacing it with this pre-programmed unit typically resolves those problems permanently.

What happens if I don’t do the airbag or brake pedal procedures after installation?

If the ‘Setup SDM Primary Key’ procedure is not done, the airbag warning light will likely remain on, and the system may not function correctly in an accident. If the brake pedal recalibration is needed and not performed, you may experience issues with brake light operation or cruise control engagement. We strongly recommend completing all required post-install steps for safety and functionality.

MPN

15063578

Genuine OEM

Yes

Interchange part number

Condition

Refurbished

Model

BRAVADA

Make

Year

2002

Brand

GM

Manufacturer Part Number

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