← View Generic B1389 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1389: B1389: 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 B1389 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a malfunction in the vehicle's lighting system, such as a faulty headlight, taillight, or turn signal.
⚠️

Symptoms

  • • Dim or inoperative headlights
  • • taillights
  • • or turn signals
  • • or a combination of these.
🔍

Common Causes

  • • Faulty headlight or taillight bulb
  • • wiring issue
  • • or a problem with the headlight or taillight switch.
🛠️

How to Fix B1389 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace the headlight or taillight bulb if necessary. 2. Inspect and repair any damaged wiring. 3. Test the headlight or taillight switch and replace if faulty.

🔧

Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

headlight or taillight bulb Shop ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B1389

B1387 Sequential Code

B1387: Power Window Regulator Malfunction

Medium
B1388 Sequential Code

B1388: Seat Switch Circuit Malfunction

Medium
B1390 Sequential Code

B1390: Body Control Module (BCM) Security System Malfunction

Medium
B1391 Sequential Code

B1391: Audio System Fault

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