← View Generic B1138 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1138: B1138: Door Locks Actuator Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B1138 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1138 code indicates a malfunction in the door locks actuator circuit, which can cause issues with door locking and unlocking functions.
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Symptoms

  • • Door locks may not function properly
  • • doors may not lock or unlock
  • • or may lock/unlock randomly.
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Common Causes

  • • Faulty door locks actuator
  • • wiring issue
  • • or a problem with the body control module.
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How to Fix B1138 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the door locks actuator for any signs of physical damage or corrosion. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or wear. Repair or replace as needed. 3. Check the body control module for any fault codes or issues. Update software or replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Door locks actuator Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1138

B1136 Sequential Code

B1136: Airbag System Malfunction

High
B1137 Sequential Code

B1137: Climate Control Actuator Malfunction

Medium
B1139 Sequential Code

B1139: Power Window Relay Circuit Malfunction

Medium
B1140 Sequential Code

B1140: Seat Position Sensor 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