← View Generic B1374 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1374: B1374: 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 B1374 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1374 code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
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Symptoms

  • • Difficulty locking/unlocking doors
  • • alarm system malfunction
  • • security light on dashboard
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Common Causes

  • • Faulty security module
  • • wiring issue
  • • faulty door lock actuator
  • • incorrect security system configuration
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How to Fix B1374 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check security system configuration and reset if necessary. 2. Inspect wiring and connectors for damage or corrosion. 3. Replace faulty security module or door lock actuator if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Security module Shop ↗ Door lock actuator Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1374

B1372 Sequential Code

B1372: Seat Switch Circuit Malfunction

Medium
B1373 Sequential Code

B1373: Illumination Malfunction

Medium
B1375 Sequential Code

B1375: Audio System Fault

Medium
B1376 Sequential Code

B1376: 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