Restore Your GM Truck’s Electrical System with a Plug-and-Play BCM

Are you chasing down bizarre electrical gremlins in your 2002 Suburban or GM truck? Flickering lights, power windows with a mind of their own, a security light that won’t turn off, or random warning messages can all point to one culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, when the BCM starts to fail, it can create a cascade of frustrating and seemingly unrelated issues. Stop throwing parts at the problem. This is the direct, reliable solution you’ve been looking for.

We take the guesswork and hassle out of the repair. Unlike a generic part from a big box store, this BCM comes fully programmed to your vehicle’s specific VIN. Just provide us with your VIN after purchase, and our technicians will load the latest GM software onto the module before it ships. This means no expensive trip to the dealership for programming, saving you hundreds of dollars and significant downtime. It’s designed to be a straightforward fix for both seasoned mechanics and dedicated DIYers.

Is Your GM Vehicle Showing These Symptoms?

• ✔ Erratic or non-working power windows, door locks, or mirrors.
• ✔ Interior or exterior lights flickering, staying on, or not working at all.
• ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
• ✔ The horn honks randomly or doesn’t work when pressed.
• ✔ Intermittent operation of the radio or climate controls.
• ✔ False warning messages on the instrument cluster (e.g., “Service 4WD”).
• ✔ Diagnostic trouble codes (DTCs) related to lost communication, such as U0140, U0155, or U0164.

A Straightforward Guide to Your BCM Installation

Replacing the BCM is a manageable job for most DIY enthusiasts. In most compatible trucks and SUVs like the Suburban, Tahoe, and Silverado, the module is located under the driver’s side of the dashboard.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: On your 2002 Suburban and similar models, find the BCM mounted under the steering column, often attached to a metal bracket. On vans like the Astro or Safari, it’s typically behind the center dash area.
3. Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
4. Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and tighten the bolts. Reconnect all electrical connectors firmly until they click into place.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions – lights, locks, windows, radio, etc. – to confirm the repair.

Important Post-Installation Notes

While this module is programmed for a plug-and-play installation, some GM vehicles may require a simple relearn procedure to sync all systems perfectly. This is normal and expected.

• 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 recalibration might be necessary to ensure brake lights and traction control function correctly.
• No Core Charge: You are not required to send your old BCM back to us. This saves you time and the cost of return shipping.

Will This Fit My Truck or SUV?

This BCM is a direct replacement for a wide range of GM vehicles and is compatible with part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. Please verify your part number or check the list below.