← View Generic B1346 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1346: B1346: 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 B1346 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1346 code indicates a malfunction in the door locks actuator circuit, which controls the operation of the door locks. This can cause issues with locking and unlocking the doors.
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Symptoms

  • • Door locks may not function properly
  • • or may not lock or unlock at all
  • • or may lock/unlock randomly.
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Common Causes

  • • Faulty door locks actuator
  • • wiring issue
  • • faulty body control module
  • • or a problem with the door lock switch.
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How to Fix B1346 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door locks actuator for any signs of damage or wear. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or corrosion. Repair or replace as needed. 3. Check the body control module for any fault codes. Clear any codes and retest. 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 locks actuator Shop ↗ Wiring harness Shop ↗ Body control module Shop ↗ Door lock switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1346

B1344 Sequential Code

B1344: Airbag System Fault

High
B1345 Sequential Code

B1345: Climate Control Actuator Malfunction

Medium
B1347 Sequential Code

B1347: Power Window Relay Circuit Malfunction

Medium
B1348 Sequential Code

B1348: 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