← View Generic B0909 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0909: B0909: Body System Code - Lighting Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
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 B0909 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0909 code indicates a malfunction in the body control module's (BCM) lighting system. This can cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.
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Symptoms

  • • Dim or inoperative exterior lights
  • • faulty turn signal indicators
  • • or a combination of both
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Common Causes

  • • Faulty BCM
  • • wiring issues
  • • blown fuses
  • • or a malfunctioning lighting module
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How to Fix B0909 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the BCM for any errors or faults. 2. Inspect the wiring and connectors for damage or corrosion. 3. Replace any blown fuses. 4. Test the lighting module for proper function. 5. Update the BCM software if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module (BCM) Shop ↗ Lighting Module Shop ↗ Wiring Harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0909

B0907 Sequential Code

B0907: Power Window Relay Circuit Malfunction

Medium
B0908 Sequential Code

B0908: Seat Position Sensor Malfunction

Medium
B0910 Sequential Code

B0910: Body Control Module (BCM) Security Malfunction

Medium
B0911 Sequential Code

B0911: 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