2002

Restore Your Truck’s Brain and End Electrical Frustrations

Are you chasing electrical gremlins in your 2002 GMC Sierra or another compatible GM vehicle? Flickering lights, a possessed radio, power windows with a mind of their own, or a security light that prevents your truck from starting are all classic signs of a failing Body Control Module (BCM). The BCM is the central hub for your vehicle’s body electronics, and when it goes bad, it can cause a cascade of baffling and annoying issues. Stop throwing parts at the problem. This is the direct, reliable solution you’ve been looking for.

We take the guesswork and dealer hassle out of the repair. Unlike a generic part from the auto parts store, this BCM arrives at your door pre-programmed with the latest GM software, specifically flashed to your vehicle’s VIN. Just provide us with your VIN after purchase, and our experts will handle the programming. This means no expensive trip to the dealership for coding, saving you significant time and money. This is the most efficient way to get your truck back to 100% functionality.

Is Your GM Truck or SUV Showing These Symptoms?

• ✔ Intermittent or non-functional power windows, door locks, or mirrors.
• ✔ Interior or exterior lights flickering, staying on, or not working at all.
• ✔ The security or anti-theft light is on, causing a no-start condition.
• ✔ Erratic or dead instrument panel gauges.
• ✔ The radio or climate control system behaves unpredictably.
• ✔ False warnings on the driver information center (e.g., “Door Ajar”).

A Straightforward Guide to Installation

Replacing your 2002 Sierra BCM is a manageable job for a DIYer with basic tools. The module is typically located under the driver’s side of the dashboard, near the steering column.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
2. Locate the BCM: On most trucks like the Sierra and Silverado, it’s mounted to a bracket under the steering column. You may need to remove a lower dash panel for access.
3. Disconnect Connectors: Carefully unplug the multiple wiring harnesses from the old BCM. The connectors have locking tabs; press them firmly to release without damaging the clips.
4. Remove the Old Module: Unbolt or unclip the old BCM from its mounting bracket and remove it from the vehicle.
5. Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all wiring harnesses. You should hear a ‘click’ as they lock into place.
6. Reconnect Battery: Reattach the negative battery terminal.
7. Perform Final Procedures: Follow the critical post-installation steps outlined below to ensure all systems, including safety features, are working correctly.

Important Post-Installation Procedures

After installing your new 2002 Sierra BCM, a couple of final steps are essential for safety and proper operation. While our programming handles the core functions, your vehicle’s systems need to re-learn and synchronize with the new module.

• Airbag System Reset: To clear the airbag warning light, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This ensures the airbag system communicates correctly with the new BCM.
• Brake Pedal Position Sensor Relearn: Some vehicles may require a brake pedal position sensor relearn. This recalibrates the sensor to the new module, which is critical for proper brake light operation and stability control functions.

Note: If you are not equipped with a diagnostic tool capable of these functions, a professional mechanic can perform these relearn procedures for you.

Will This Fit My Truck or SUV?

This module is a direct-fit 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.