← View Generic B0221 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0221: B0221: Low Beam Headlight Relay Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $150
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 B0221 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0221 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 function at all.
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Symptoms

  • • Headlights not turning on
  • • flickering
  • • or staying on continuously
  • • dim or bright lights
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Common Causes

  • • Faulty headlight relay
  • • wiring issues
  • • blown fuse
  • • or a problem with the headlight switch
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How to Fix B0221 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the headlight relay for any signs of damage or corrosion. Replace it if necessary. 2. Inspect the wiring and connections for any damage or corrosion. 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.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Headlight relay Shop ↗ Wiring harness Shop ↗ Fuse Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0221

B0219 Sequential Code

B0219: Power Window Circuit Malfunction

Medium
B0220 Sequential Code

B0220: Seat Position Sensor Circuit Malfunction

Medium
B0222 Sequential Code

B0222: Immobilizer System Malfunction

High
B0223 Sequential Code

B0223: Audio System Failure

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