← View Generic B1490 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1490: B1490: 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 B1490 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1490 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 do so intermittently
  • • and may also trigger a warning light on the dashboard.
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Common Causes

  • • Faulty door lock actuators
  • • wiring issues
  • • or a malfunctioning body control module.
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How to Fix B1490 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuators for proper operation and replace if faulty. 2. Inspect and repair any damaged wiring. 3. Update the body control module's 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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Related Diagnostic Codes

Other codes that may appear with B1490

B1488 Sequential Code

B1488: Airbag System Fault

High
B1489 Sequential Code

B1489: Climate Control Actuator Malfunction

Medium
B1491 Sequential Code

B1491: Power Window Circuit Malfunction

Medium
B1492 Sequential Code

B1492: 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