← View Generic B1946 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1946: B1946: Door Locks Actuator Circuit 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 B1946 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1946 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 not functioning
  • • door locks stuck
  • • or door locks not responding to key fob or door switch
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Common Causes

  • • Faulty door locks actuator
  • • wiring issue
  • • or faulty body control module
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How to Fix B1946 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door locks 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 if necessary. 3. Check the body control module for any fault codes. Clear or replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Door locks actuator Shop ↗ Wiring harness Shop ↗ Body control module Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B1946

B1944 Sequential Code

B1944: Airbag System Fault

High
B1945 Sequential Code

B1945: Climate Control Fan Motor Malfunction

Medium
B1947 Sequential Code

B1947: Power Window Circuit Malfunction

Medium
B1948 Sequential Code

B1948: 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