← View Generic B3274 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3274: B3274: 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 B3274 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B3274 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking doors.
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Symptoms

  • • Doors may not lock or unlock properly
  • • or may do so intermittently
  • • and may also trigger a warning light on the dashboard.
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Common Causes

  • • Faulty door lock actuators
  • • wiring issues
  • • or a malfunctioning body control module.
🛠️

How to Fix B3274 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door lock actuators for proper function and replace if faulty. 2. Inspect wiring for damage or corrosion and repair as needed. 3. Update the body control module software if necessary. 4. Check for any loose connections and secure them.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with B3274

B3272 Sequential Code

B3272: Airbag System Fault

High
B3273 Sequential Code

B3273: Climate Control Blower Motor Resistance Fault

Medium
B3275 Sequential Code

B3275: Power Window Relay Circuit Malfunction

Medium
B3276 Sequential Code

B3276: 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