← View Generic B1189 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1189: B1189: Body System Code - Lighting Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B1189 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1189 code indicates a malfunction in the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
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Symptoms

  • • Dim or inoperative headlights
  • • taillights
  • • or brake lights
  • • or a combination of these symptoms.
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Common Causes

  • • Faulty headlight or taillight bulb
  • • wiring issue
  • • or a problem with the body control module.
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How to Fix B1189 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the headlight or taillight bulb and replace it if necessary. 2. Inspect the wiring harness for damage or corrosion and repair or replace as needed. 3. Check the body control module for any faults and clear or replace it if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

headlight or taillight bulb Shop ↗ wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1189

B1187 Sequential Code

B1187: Window Regulator Malfunction

Medium
B1188 Sequential Code

B1188: Seat Switch Circuit Malfunction

Medium
B1190 Sequential Code

B1190: Body System Security Malfunction

Medium
B1191 Sequential Code

B1191: Audio System 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