← View Generic B1594 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1594: B1594: 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 B1594 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the door lock actuator circuit, preventing the door locks from functioning properly.
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Symptoms

  • • Door locks do not function
  • • may be stuck or jammed
  • • or may not respond to key fob or door switch inputs.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • or BCM malfunction.
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How to Fix B1594 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to reset BCM. 2. Check and repair or replace wiring as needed. 3. Test door lock actuator and replace if faulty. 4. Update BCM software if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Door lock actuator Shop ↗ Wiring harness Shop ↗

Essential Tool

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Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

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Related Diagnostic Codes

Other codes that may appear with B1594

B1592 Sequential Code

B1592: Airbag System Fault

High
B1593 Sequential Code

B1593: Climate Control Fan Motor Malfunction

Medium
B1595 Sequential Code

B1595: Power Window Relay Circuit Malfunction

Medium
B1596 Sequential Code

B1596: 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