← View Generic B0157 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0157: B0157: Exterior 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 B0157 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0157 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
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Symptoms

  • • Dim or inoperative exterior lights
  • • warning lights on the dashboard
  • • or erratic lighting behavior
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Common Causes

  • • Faulty headlight or taillight bulbs
  • • wiring issues
  • • or a malfunctioning lighting control module
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How to Fix B0157 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace faulty bulbs. 2. Inspect and repair wiring damage. 3. Update the lighting control module software. 4. Test the lighting system to ensure proper function.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Exterior lighting bulbs Shop ↗ Wiring harness Shop ↗ Lighting control module Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B0157

B0155 Sequential Code

B0155: Window Regulator Malfunction

Medium
B0156 Sequential Code

B0156: Seat Position Sensor Malfunction

Medium
B0158 Sequential Code

B0158: Immobilizer System Malfunction

Medium
B0159 Sequential Code

B0159: 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