← View Generic B1002 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1002: B1002: Door Locks Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $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 B1002 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a problem with the door lock system, possibly due to a faulty actuator, wiring issue, or faulty door lock switch.
⚠️

Symptoms

  • • Door locks malfunction
  • • may not lock or unlock properly
  • • or may not respond to key fob or door switch.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • faulty door lock switch
  • • or faulty body control module.
🛠️

How to Fix B1002 on 2020 Chevrolet SILVERADO 1500 PICKUP

Check door lock actuator for proper operation and replace if faulty. Inspect wiring and connectors for damage or corrosion and repair or replace as needed. Test door lock switch and replace if faulty. Update body control module software if necessary.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B1002

B1000 Sequential Code

B1000: Airbag System Malfunction

High
B1001 Sequential Code

B1001: Climate Control System Fault

Medium
B1003 Sequential Code

B1003: Power Window Circuit Malfunction

Medium
B1004 Sequential Code

B1004: 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