← View Generic B0858 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0858: B0858: Door Locks Module Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$150 - $500
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 B0858 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0858 code indicates a malfunction in the door locks module, which controls the operation of the door locks and windows. This can cause issues with locking and unlocking the doors, as well as problems with the automatic door lock/unlock feature.
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Symptoms

  • • Door locks not functioning properly
  • • automatic door lock/unlock feature not working
  • • doors not locking/unlocking with key fob or door switch
🔍

Common Causes

  • • Faulty door locks module
  • • wiring issues
  • • faulty door lock actuators
  • • faulty door lock switches
🛠️

How to Fix B0858 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the door locks module. 2. Check and repair any wiring issues. 3. Replace the door locks module if faulty. 4. Replace faulty door lock actuators or door lock switches.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Door locks module Shop ↗ Door lock actuators Shop ↗ Door lock switches Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0858

B0856 Sequential Code

B0856: Airbag System Fault

Medium
B0857 Sequential Code

B0857: Climate Control Fan Motor Malfunction

Medium
B0859 Sequential Code

B0859: Power Window Regulator Circuit Malfunction

Medium
B0860 Sequential Code

B0860: 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