← View Generic B0904 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0904: B0904: Airbag System Fault

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$500 - $1500
Parts & Labor
Difficulty
4/5
2-4 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 B0904 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The airbag system has detected a fault, which may be caused by a malfunctioning sensor, wiring issue, or faulty airbag module.
⚠️

Symptoms

  • • Airbag warning light on dashboard
  • • unusual airbag deployment
  • • or no airbag deployment in a crash
🔍

Common Causes

  • • Faulty airbag sensor
  • • wiring damage
  • • airbag module failure
  • • or ECU software issue
🛠️

How to Fix B0904 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check airbag sensor connections and wiring for damage. 2. Clear any error codes and test the airbag system. 3. Replace faulty airbag sensor or module if necessary. 4. Update ECU software if required.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Airbag sensor Shop ↗ Airbag module Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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🔗

Related Diagnostic Codes

Other codes that may appear with B0904

B0902 Sequential Code

B0902: Immobilizer System Malfunction

High
B0903 Sequential Code

B0903: Audio System Malfunction

Medium
B0905 Sequential Code

B0905: Climate Control Fan Motor Malfunction

Medium
B0906 Sequential Code

B0906: Door Locks 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