2013 Silverado Body Control Module 15263363 | VIN Programmed

Restore Full Command of Your Truck’s Electronics

Are you battling bizarre electrical issues in your 2013 Chevrolet Silverado or other GM truck? Flickering lights, a dead instrument cluster, or power windows with a mind of their own are classic signs of a failing Body Control Module (BCM). As the electronic nerve center for your vehicle’s comfort and security features, a faulty BCM can cause a cascade of frustrating problems. This replacement Body Control Module, equivalent to GM part number 15263363, is the definitive solution. It comes pre-programmed to your vehicle’s specific VIN, eliminating the need for an expensive trip to the dealership and getting you back on the road with confidence.

From my 20+ years of experience in diagnostics, I can tell you that BCM failures are often mistaken for multiple, unrelated problems. A customer might come in complaining about a dead battery, a non-functional radio, and erratic door locks, thinking they need three separate repairs. In reality, this single module is the culprit. By replacing the BCM, you’re not just fixing one symptom; you’re restoring the entire integrated system to factory-spec operation. This is a reliable, cost-effective repair for any DIY enthusiast or professional technician.

Is Your Silverado Showing These Electrical Gremlins?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your module needs replacement:

• ✔ The airbag warning light is illuminated, often with a DTC like B1001 (SDM Mismatch).
• ✔ Power windows, door locks, or mirrors operate intermittently or not at all.
• ✔ HVAC controls are unresponsive, or the blower fan works sporadically.
• ✔ The anti-theft or security system acts up, preventing the vehicle from starting.
• ✔ Headlights, taillights, or interior dome lights flicker or fail to turn on/off correctly.
• ✔ Unexplained battery drain that leaves you with a dead vehicle overnight.
• ✔ Multiple communication DTCs stored in the vehicle’s computer system.

A Straightforward Guide to BCM Installation

One of the best features of this module is its simple, direct-fit installation. For most DIYers, this is a job that can be completed in under 15 minutes with basic hand tools.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
2. Locate the BCM: On most GM trucks and SUVs of this era, the BCM is located under the driver’s side of the dashboard, often near the steering column or main fuse panel. It’s a black plastic box with several large electrical connectors.
3. Remove the Old Module: Carefully unplug the wiring harness connectors. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the old module from its mounting bracket.
4. Install the New Module: Seat your new, VIN-programmed BCM into the mounting bracket and securely plug in all the wiring harnesses. You should hear a ‘click’ as they lock into place.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, wipers, locks, windows, and HVAC to confirm the repair.
6. Post-Installation Checks: In some cases, an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be needed if related warning lights appear. This requires a professional-grade scan tool and is detailed in the procedures. This is not always necessary but is a known possibility.

Verified Fitment for Your GM Truck or SUV

This module is a direct replacement for part number 15263363 and other interchangeable numbers. It is guaranteed to fit the following vehicles:

Note: Always verify your part number or consult the fitment list before ordering. This module is interchangeable with part numbers 25835966, 15263497, 15878753, 20939137, and more.