← View Generic B1890 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1890: B1890: 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 B1890 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1890 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking the doors.
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Symptoms

  • • Doors may not lock or unlock properly
  • • or may lock/unlock randomly
  • • door locks may be slow to respond
  • • or may not respond at all.
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Common Causes

  • • Faulty door lock actuator
  • • faulty door lock switch
  • • wiring issues
  • • or a problem with the body control module.
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How to Fix B1890 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuator for proper operation and replace if faulty. 2. Check the door lock switch for proper operation and replace if faulty. 3. Check the wiring harness for damage or corrosion and repair if necessary. 4. Check the body control module for any fault codes and clear or replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B1890

B1888 Sequential Code

B1888: Airbag System Fault

High
B1889 Sequential Code

B1889: Climate Control System Malfunction

Medium
B1891 Sequential Code

B1891: Power Window Regulator Malfunction

Medium
B1892 Sequential Code

B1892: 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