← View Generic B0642 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0642: B0642: Door Locks Actuator 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 B0642 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0642 code indicates a malfunction in the door lock actuator, which may cause the doors to malfunction or not lock/unlock properly.
⚠️

Symptoms

  • • Doors may not lock/unlock
  • • stuck doors
  • • unusual door lock sounds
  • • or warning lights on the dashboard.
🔍

Common Causes

  • • Faulty door lock actuator
  • • faulty wiring
  • • or a malfunctioning body control module.
🛠️

How to Fix B0642 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the system. 2. Check and repair or replace the faulty door lock actuator. 3. Inspect and repair or replace faulty wiring. 4. Update the body control module if necessary.

🔧

Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B0642

B0640 Sequential Code

B0640: Airbag System Fault

High
B0641 Sequential Code

B0641: Climate Control Temperature Sensor Malfunction

Medium
B0643 Sequential Code

B0643: Power Window Motor Malfunction

Medium
B0644 Sequential Code

B0644: Seat Adjuster Motor 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