← View Generic B1142 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1142: B1142: 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 B1142 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system is malfunctioning, preventing the engine from starting. This code is typically set when the immobilizer system detects a problem with the key fob, ignition switch, or other security components.
⚠️

Symptoms

  • • Engine won't start
  • • key fob not recognized
  • • immobilizer light on dashboard
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Common Causes

  • • Faulty key fob
  • • ignition switch
  • • immobilizer module
  • • or wiring issues
🛠️

How to Fix B1142 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace the key fob battery if necessary. 2. Inspect the ignition switch for damage or corrosion. 3. Test the immobilizer module and wiring for faults. 4. Update the immobilizer system software if necessary.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Key fob battery Shop ↗ Ignition switch Shop ↗ Immobilizer module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1142

B1140 Sequential Code

B1140: Seat Position Sensor Malfunction

Medium
B1141 Sequential Code

B1141: Turn Signal or Hazard Warning Light Malfunction

Medium
B1143 Sequential Code

B1143: Audio System Malfunction

Medium
B1144 Sequential Code

B1144: Airbag System Circuit 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