← View Generic B0198 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0198: B0198: Immobilizer 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 B0198 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system has detected a malfunction, preventing the engine from starting. This code indicates a problem with the immobilizer system, which is designed to prevent theft by disabling the engine unless the correct key is present.
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Symptoms

  • • Engine won't start
  • • immobilizer light on dashboard
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Common Causes

  • • Faulty immobilizer module
  • • incorrect or worn-out key
  • • faulty keyless entry system
  • • wiring issues
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How to Fix B0198 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the immobilizer module for any signs of physical damage or corrosion. Clean or replace if necessary. 2. Check the keyless entry system for any issues. 3. Try using a spare key or reprogramming the keyless entry system. 4. If the issue persists, replace the immobilizer module.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

immobilizer module Shop ↗ keyless entry system Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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🔗

Related Diagnostic Codes

Other codes that may appear with B0198

B0196 Sequential Code

B0196: Seat Switch Circuit Malfunction

Medium
B0197 Sequential Code

B0197: Turn Signal Lamp Malfunction

Medium
B0199 Sequential Code

B0199: Audio System Malfunction

Medium
B0200 Sequential Code

B0200: Airbag System Malfunction

High

💡 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