← View Generic B3346 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3346: B3346: Door Locks Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
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 B3346 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B3346 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking doors, as well as potentially preventing the vehicle from being driven.
⚠️

Symptoms

  • • Doors may not lock or unlock properly
  • • door locks may be stuck
  • • or the vehicle may not start due to a door lock issue.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • or a problem with the door lock module.
🛠️

How to Fix B3346 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuator for any signs of wear or damage. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or corrosion. Repair or replace as needed. 3. Check the door lock module for any signs of malfunction. Replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B3346

B3344 Sequential Code

B3344: Airbag System Fault

High
B3345 Sequential Code

B3345: Climate Control Temperature Sensor Malfunction

Medium
B3347 Sequential Code

B3347: Power Window Regulator Malfunction

Medium
B3348 Sequential Code

B3348: Seat Position Sensor 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