← View Generic B0391 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0391: B0391: Audio System 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 B0391 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0391 code indicates a malfunction in the audio system, possibly due to a faulty amplifier, speaker, or wiring issue.
⚠️

Symptoms

  • • No sound or distorted sound from the speakers
  • • inability to adjust volume or settings
  • • or intermittent audio system failure.
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Common Causes

  • • Faulty audio amplifier
  • • blown or damaged speakers
  • • corroded or damaged wiring
  • • or a malfunctioning audio control module.
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How to Fix B0391 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and repair or replace damaged wiring. 2. Inspect and replace faulty speakers. 3. Test and replace the audio amplifier if necessary. 4. Update or replace the audio control module if faulty.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Audio amplifier Shop ↗ Speakers Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0391

B0389 Sequential Code

B0389: Exterior Lighting Malfunction

Medium
B0390 Sequential Code

B0390: Body Control Module (BCM) Security Fault

Medium
B0392 Sequential Code

B0392: Airbag System Sensor Circuit Malfunction

High
B0393 Sequential Code

B0393: Climate Control Fan Motor 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