← View Generic B0445 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0445: B0445: Body Control Module (BCM) Malfunction - Lighting

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2020 Chevrolet
SILVERADO 1500 PICKUP
⚠️

Important for 2020 Chevrolet SILVERADO 1500 PICKUP Owners

Before starting repairs, verify which engine your 2020 Chevrolet SILVERADO 1500 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B0445 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the lighting system, which may cause issues with the vehicle's exterior lights, such as brake lights, turn signals, or hazard lights.
⚠️

Symptoms

  • • Inoperative or flickering exterior lights
  • • warning lights on the dashboard
  • • or a check engine light.
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Common Causes

  • • Faulty BCM
  • • wiring issues
  • • blown fuses
  • • or a malfunctioning lighting module.
🛠️

How to Fix B0445 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the BCM fuse and replace it if blown. 2. Inspect and repair any damaged wiring. 3. Test the lighting module and replace it if faulty. 4. Update the BCM software if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

BCM fuse Shop ↗ wiring harness Shop ↗ lighting module Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B0445

B0443 Sequential Code

B0443: Power Window Circuit Malfunction

Medium
B0444 Sequential Code

B0444: Seat Switch Circuit Malfunction

Medium
B0446 Sequential Code

B0446: Body System Security Malfunction

Medium
B0447 Sequential Code

B0447: Audio System Malfunction

Medium

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system