← View Generic B3157 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3157: B3157: Turn Signal Light 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 B3157 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B3157 code indicates a malfunction in the turn signal light circuit, which can cause the turn signal lights to malfunction or not function at all.
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Symptoms

  • • Turn signal lights not functioning
  • • flashing erratically
  • • or not turning off when the turn signal is cancelled
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Common Causes

  • • Faulty turn signal light switch
  • • corroded or damaged wiring
  • • blown fuse
  • • or malfunctioning turn signal light module
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How to Fix B3157 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the turn signal light switch for corrosion or damage and clean or replace it as needed. 2. Inspect the wiring for corrosion or damage and repair or replace it as needed. 3. Check the fuse box for a blown fuse and replace it if necessary. 4. If the issue persists, replace the turn signal light module.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Turn signal light switch Shop ↗ Wiring harness Shop ↗ Fuse Shop ↗ Turn signal light module Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3157

B3155 Sequential Code

B3155: Power Window Regulator Circuit Malfunction

Medium
B3156 Sequential Code

B3156: Seat Switch Circuit Malfunction

Medium
B3158 Sequential Code

B3158: Immobilizer System Malfunction

Medium
B3159 Sequential Code

B3159: 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