← View Generic B3930 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3930: B3930: Door Locks Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
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 B3930 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B3930 code indicates a malfunction in the door lock system, which may cause the doors to lock or unlock unexpectedly, or fail to lock or unlock at all.
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Symptoms

  • • Doors lock or unlock unexpectedly
  • • failure to lock or unlock
  • • door ajar warning light on
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • faulty door lock module
  • • faulty door switch
🛠️

How to Fix B3930 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 if necessary. 3. Replace door lock module if faulty. 4. Check door switch for proper operation and replace if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B3930

B3928 Sequential Code

B3928: Airbag System Fault

Medium
B3929 Sequential Code

B3929: Climate Control Malfunction

Medium
B3931 Sequential Code

B3931: Power Window Regulator Malfunction

Medium
B3932 Sequential Code

B3932: 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