← View Generic B2074 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B2074: B2074: 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 B2074 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B2074 code indicates a malfunction in the door lock system, which may cause the doors to lock or unlock unexpectedly, or fail to function properly.
⚠️

Symptoms

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

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

How to Fix B2074 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to reset system. 2. Check and repair or replace faulty door lock actuator. 3. Inspect and repair or replace wiring. 4. Replace door lock module if faulty. 5. Check and replace door lock switch 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 lock switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B2074

B2072 Sequential Code

B2072: Airbag System Fault

Medium
B2073 Sequential Code

B2073: Climate Control Temperature Sensor Malfunction

Medium
B2075 Sequential Code

B2075: Power Window Circuit Malfunction

Medium
B2076 Sequential Code

B2076: 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