← View Generic B1226 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1226: B1226: 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 B1226 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1226 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
  • • unusual noises from the door locks
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Common Causes

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

How to Fix B1226 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the system. 2. Check and clean the door lock actuator and wiring. 3. Replace the faulty door lock actuator or module. 4. Check and replace the door lock switch if necessary.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Door lock actuator Shop ↗ Door lock module Shop ↗ Door lock switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1226

B1224 Sequential Code

B1224: Airbag System Fault

High
B1225 Sequential Code

B1225: Climate Control Fan Motor Malfunction

Medium
B1227 Sequential Code

B1227: Power Window Relay Circuit Malfunction

Medium
B1228 Sequential Code

B1228: 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