← View Generic B0398 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0398: B0398: Body System Security 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 B0398 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0398 code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
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Symptoms

  • • Difficulty locking/unlocking doors
  • • alarm system malfunction
  • • security light on dashboard
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Common Causes

  • • Faulty security module
  • • wiring issues
  • • faulty door lock actuators
  • • software glitch
🛠️

How to Fix B0398 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and clear any trouble codes using a scan tool. 2. Inspect and repair any damaged wiring. 3. Replace faulty door lock actuators. 4. Update software if necessary. 5. Test the security system to ensure proper function.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Security module Shop ↗ Door lock actuators Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

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🔗

Related Diagnostic Codes

Other codes that may appear with B0398

B0396 Sequential Code

B0396: Seat Position Sensor Malfunction

Medium
B0397 Sequential Code

B0397: Malfunction of Front Fog Light

Medium
B0399 Sequential Code

B0399: Audio System Malfunction

Medium
B0400 Sequential Code

B0400: Airbag System Fault

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