← View Generic B3946 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3946: B3946: Door Locks Actuator Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $150
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 B3946 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The door locks actuator is malfunctioning, preventing the doors from locking or unlocking properly.
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Symptoms

  • • Doors won't lock or unlock
  • • may be stuck in a locked or unlocked position
  • • or may not respond to the door lock switch.
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Common Causes

  • • Faulty door locks actuator
  • • wiring issue
  • • or a problem with the door lock switch.
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How to Fix B3946 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock switch 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. Test the door locks actuator to determine if it's faulty. Replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B3946

B3944 Sequential Code

B3944: Airbag System Fault

High
B3945 Sequential Code

B3945: Climate Control Fan Motor Malfunction

Medium
B3947 Sequential Code

B3947: Power Window Relay Circuit Malfunction

Medium
B3948 Sequential Code

B3948: Seat Position Sensor 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