← View Generic B0718 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0718: B0718: 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 B0718 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is usually related to a faulty immobilizer module, key fob, or wiring issue.
⚠️

Symptoms

  • • Vehicle won't start
  • • dashboard warning light is illuminated
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Common Causes

  • • Faulty immobilizer module
  • • key fob
  • • wiring issue
  • • or battery drain
🛠️

How to Fix B0718 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the key fob battery level and replace if necessary. 2. Inspect the wiring harness for damage or corrosion. 3. Test the immobilizer module using a scan tool. 4. Replace the immobilizer module if faulty.

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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 ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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🔗

Related Diagnostic Codes

Other codes that may appear with B0718

B0716 Sequential Code

B0716: Seat Switch Circuit Malfunction

Medium
B0717 Sequential Code

B0717: Low Beam Headlight Malfunction

Medium
B0719 Sequential Code

B0719: Audio System Malfunction

Medium
B0720 Sequential Code

B0720: Airbag System Circuit Short to Ground

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