← View Generic B0939 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0939: B0939: Window Regulator Motor Circuit 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 B0939 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0939 code indicates a malfunction in the window regulator motor circuit, which controls the movement of the window glass.
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Symptoms

  • • Window fails to move
  • • or moves erratically
  • • when operated from the driver's door switch or the key fob.
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Common Causes

  • • Faulty window regulator motor
  • • faulty door switch
  • • wiring issue
  • • or blown fuse.
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How to Fix B0939 on 2020 Chevrolet SILVERADO 1500 PICKUP

Disconnect the battery to reset the system. Check the fuse and replace it if blown. Inspect the wiring and repair or replace as needed. Replace the window regulator motor if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Window regulator motor Shop ↗ Door switch Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with B0939

B0937 Sequential Code

B0937: Climate Control Actuator Malfunction

Medium
B0938 Sequential Code

B0938: Door Lock Actuator Circuit Malfunction

Medium
B0940 Sequential Code

B0940: Seat Position Sensor Malfunction

Medium
B0941 Sequential Code

B0941: Body System Malfunction - Lighting

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