← View Generic B2142 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B2142: B2142: 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 B2142 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The body control module (BCM) has detected a security malfunction, possibly due to a faulty sensor, wiring issue, or software problem.
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Symptoms

  • • Alarm system malfunction
  • • doors or trunk won't unlock
  • • or immobilizer system failure
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Common Causes

  • • Faulty BCM sensor
  • • wiring issue
  • • software glitch
  • • or faulty immobilizer module
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How to Fix B2142 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check BCM sensor connections and wiring for damage or corrosion. 2. Update BCM software if necessary. 3. Replace faulty BCM sensor or immobilizer module if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

BCM sensor Shop ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B2142

B2140 Sequential Code

B2140: Seat Position Sensor Circuit Malfunction

Medium
B2141 Sequential Code

B2141: Turn Signal Lamp Malfunction

Medium
B2143 Sequential Code

B2143: Audio System Malfunction

Medium
B2144 Sequential Code

B2144: Airbag System Fault

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