← View Generic B0042 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0042: B0042: Door Locks Actuator Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B0042 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The body control module has detected a malfunction in the door lock actuator, preventing proper door lock operation. This code is often accompanied by symptoms such as doors not locking or unlocking properly, or a warning light on the dashboard.
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Symptoms

  • • Doors not locking or unlocking
  • • warning light on dashboard
  • • door lock button not responding
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • body control module malfunction
🛠️

How to Fix B0042 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check door lock actuator for proper operation and replace if faulty. 2. Inspect wiring for damage or corrosion and repair as necessary. 3. Update body control module software if necessary. 4. Test door lock system to ensure proper operation.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B0042

B0040 Sequential Code

B0040: Airbag System Circuit Malfunction

High
B0041 Sequential Code

B0041: Climate Control System Malfunction

Medium
B0043 Sequential Code

B0043: Window Regulator Motor Malfunction

Medium
B0044 Sequential Code

B0044: 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