← View Generic B1387 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1387: B1387: Power Window Regulator Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost

$150 - $300

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

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 B1387 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The power window regulator is malfunctioning, preventing the window from moving properly.

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Symptoms

• Window stuck
• won't move
• or moves erratically
• may also trigger airbag light.

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Common Causes

• Faulty power window regulator
• faulty window switch
• wiring issue
• or blown fuse.

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How to Fix B1387 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery, check and replace blown fuse. 2. Inspect and clean window switch. 3. Replace power window regulator. 4. Check and repair wiring issue.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Power window regulator Shop ↗ Window switch Shop ↗ Fuses Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1387

B1385 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