← View Generic B3387 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3387: B3387: Power Window Regulator Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost

$100 - $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 B3387 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The power window regulator circuit has malfunctioned, preventing the window from moving properly.

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Symptoms

• Window won't move
• stuck or jammed
• intermittent operation

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Common Causes

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

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How to Fix B3387 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to reset system. 2. Check and replace blown fuse. 3. Inspect and clean window switch. 4. Replace faulty power window regulator. 5. 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 ↗

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Related Diagnostic Codes

Other codes that may appear with B3387

B3385 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