← View Generic B1770 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1770: B1770: 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 B1770 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1770 code indicates a malfunction in the door lock system, which can cause issues with locking and unlocking doors.
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Symptoms

  • • Door locks fail to function
  • • doors may not lock or unlock properly
  • • or the door lock switch may be unresponsive.
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Common Causes

  • • Faulty door lock actuator
  • • wiring issue
  • • or a problem with the door lock switch.
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How to Fix B1770 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the system. 2. Check and repair or replace the door lock actuator. 3. Inspect and repair or replace the wiring. 4. Test the door lock switch and replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B1770

B1768 Sequential Code

B1768: Airbag System Fault

High
B1769 Sequential Code

B1769: Climate Control Temperature Sensor Malfunction

Medium
B1771 Sequential Code

B1771: Power Window Relay Circuit Malfunction

Medium
B1772 Sequential Code

B1772: 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