← View Generic B0998 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0998: B0998: Immobilizer System Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B0998 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system has detected a malfunction, preventing the engine from starting. This code is often related to issues with the key fob, ignition switch, or immobilizer module.
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Symptoms

  • • Engine won't start
  • • dashboard warning lights
  • • remote start issues
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Common Causes

  • • Faulty key fob
  • • worn-out ignition switch
  • • immobilizer module failure
  • • low battery voltage
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How to Fix B0998 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the key fob battery level and replace if necessary. 2. Inspect the ignition switch for signs of wear and replace if necessary. 3. Scan for any other codes and clear them. 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 ↗ key fob battery Shop ↗ ignition switch 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 B0998

B0996 Sequential Code

B0996: Seat Switch Circuit Malfunction

Medium
B0997 Sequential Code

B0997: Turn Signal Flasher Malfunction

Medium
B0999 Sequential Code

B0999: Audio System Malfunction

Medium
B1000 Sequential Code

B1000: 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