← View Generic B1157 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1157: B1157: 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

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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 B1157 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1157 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 intermittent lighting issues.

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Common Causes

• Faulty light bulbs
• wiring issues
• or problems with the lighting control module.

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How to Fix B1157 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace faulty light bulbs. 2. Inspect and repair or replace wiring as needed. 3. Update the lighting control module if necessary.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Exterior light bulb(s) Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1157

B1155 Sequential Code

💡 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