← View Generic B0346 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0346: B0346: Door Locks Actuator Circuit 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 B0346 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0346 code indicates a malfunction in the door locks actuator circuit, which may cause the door locks to malfunction or not function at all.
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Symptoms

  • • Door locks won't lock or unlock
  • • door lock lights flashing on the dashboard
  • • or a combination of these symptoms.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issues
  • • door lock module failure
  • • or a problem with the door lock switch.
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How to Fix B0346 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuator for any signs of physical damage or corrosion. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or corrosion. Repair or replace as needed. 3. Test the door lock module to ensure it's functioning properly. Replace if necessary. 4. Check the door lock switch for any signs of wear or damage. Clean or replace as needed.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B0346

B0344 Sequential Code

B0344: Airbag System Circuit Short to Ground

High
B0345 Sequential Code

B0345: Climate Control Fan Motor Fault

Medium
B0347 Sequential Code

B0347: Power Window Regulator Malfunction

Medium
B0348 Sequential Code

B0348: Seat Switch Circuit Malfunction

Medium

💡 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