← View Generic B1120 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1120: B1120: Airbag System Fault

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $1000
Parts & Labor
Difficulty
4/5
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 B1120 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1120 code indicates a fault in the airbag system, which may prevent the airbags from deploying in the event of a crash. This code is often accompanied by other airbag-related codes.
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Symptoms

  • • Airbag warning light on dashboard
  • • airbag system malfunction
  • • crash sensor issues
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Common Causes

  • • Faulty crash sensor
  • • wiring issue
  • • airbag module malfunction
  • • faulty airbag inflator module
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How to Fix B1120 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the crash sensor for damage or corrosion and replace if necessary. 2. Inspect the wiring harness for damage or corrosion and repair or replace as needed. 3. Replace the airbag module if faulty. 4. Replace the airbag inflator module if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Crash sensor Shop ↗ Wiring harness Shop ↗ Airbag module Shop ↗ Airbag inflator module Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1120

B1118 Sequential Code

B1118: Immobilizer System Malfunction

Medium
B1119 Sequential Code

B1119: Audio System Malfunction

Medium
B1121 Sequential Code

B1121: Climate Control Blower Motor Resistance Fault

Medium
B1122 Sequential Code

B1122: 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