← View Generic B1602 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1602: B1602: 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 B1602 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1602 code indicates a malfunction in the door lock system, which may cause issues with locking or unlocking doors, or even prevent doors from locking or unlocking properly.
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Symptoms

  • • Doors won't lock or unlock
  • • door locks may be stuck
  • • or door locks may not function at all.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • door lock module failure
  • • or a problem with the door lock switch.
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How to Fix B1602 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuator for any signs of damage or wear. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or corrosion. Repair or replace if necessary. 3. Check the door lock module for any signs of failure. Replace if necessary. 4. Check the door lock switch for any signs of wear or damage. Replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B1602

B1600 Sequential Code

B1600: Airbag System Malfunction

High
B1601 Sequential Code

B1601: Climate Control System Malfunction

Medium
B1603 Sequential Code

B1603: Power Window Circuit Malfunction

Medium
B1604 Sequential Code

B1604: Seat Switch 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