← View Generic B1734 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1734: B1734: 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 B1734 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1734 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

  • • Door locks not functioning
  • • alarm system not triggering
  • • or security lights flashing
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Common Causes

  • • Faulty security module
  • • wiring issues
  • • or a malfunctioning door lock actuator
🛠️

How to Fix B1734 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the security system. 2. Check and repair any wiring issues. 3. Replace the faulty security module or door lock actuator.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Security module Shop ↗ Door lock actuator Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1734

B1732 Sequential Code

B1732: Seat Position Sensor Circuit Malfunction

Medium
B1733 Sequential Code

B1733: Exterior Lighting Malfunction

Medium
B1735 Sequential Code

B1735: Audio System Malfunction

Medium
B1736 Sequential Code

B1736: 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