← View Generic B1349 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1349: B1349: Low Beam Headlight Relay Circuit 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 B1349 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1349 code indicates a problem with the low beam headlight relay circuit, which controls the low beam headlights. This can cause the headlights to malfunction or not turn on.
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Symptoms

  • • Headlights not turning on
  • • dim or flickering lights
  • • warning lights on dashboard
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Common Causes

  • • Faulty headlight relay
  • • wiring issues
  • • blown fuse
  • • faulty headlight switch
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How to Fix B1349 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the headlight relay 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 fuse box for a blown fuse. Replace the fuse if necessary. 4. Test the headlight switch to ensure it's functioning properly. Replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Headlight relay Shop ↗ Wiring harness Shop ↗ Fuse Shop ↗ Headlight switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1349

B1347 Sequential Code

B1347: Power Window Relay Circuit Malfunction

Medium
B1348 Sequential Code

B1348: Seat Switch Circuit Malfunction

Medium
B1350 Sequential Code

B1350: Body Control Module (BCM) Security Malfunction

Medium
B1351 Sequential Code

B1351: 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