← View Generic B0387 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0387: B0387: Power Window Regulator 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 B0387 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0387 code indicates a problem with the power window regulator, which controls the movement of the window glass. This code is often accompanied by symptoms such as slow or stuck windows, or windows that do not move at all.
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Symptoms

  • • Slow or stuck windows
  • • windows that do not move at all
  • • unusual noises when operating the windows
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Common Causes

  • • Faulty power window regulator
  • • faulty window motor
  • • faulty wiring or electrical connections
  • • faulty window switch
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How to Fix B0387 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to prevent any accidental window movement. 2. Remove the door panel to access the power window regulator. 3. Disconnect the electrical connector from the regulator. 4. Remove the regulator from the door. 5. Inspect the regulator for any signs of wear or damage. 6. Replace the regulator if damaged. 7. Reassemble the regulator in the reverse order of disassembly. 8. Reconnect the electrical connector to the regulator. 9. Reconnect the battery and test the windows.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

power window regulator Shop ↗ electrical connector Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0387

B0385 Sequential Code

B0385: Climate Control Fan Motor Malfunction

Medium
B0386 Sequential Code

B0386: Door Locks Actuator Circuit Malfunction

Medium
B0388 Sequential Code

B0388: Seat Position Sensor Circuit Malfunction

Medium
B0389 Sequential Code

B0389: Exterior Lighting 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