← View Generic B0339 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0339: B0339: Power Window Relay Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
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 B0339 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0339 code indicates a problem with the power window relay circuit, which controls the operation of the windows. This can cause issues with window movement, such as slow or stuck windows.
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Symptoms

  • • Slow or stuck windows
  • • inability to roll up or down
  • • intermittent window operation
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Common Causes

  • • Faulty power window relay
  • • blown fuse
  • • wiring issue
  • • faulty window switch
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How to Fix B0339 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the power window relay for signs of wear or damage. Replace if necessary. 2. Check the fuse box for a blown fuse. Replace the fuse if necessary. 3. Inspect the wiring harness for any signs of damage or wear. Repair or replace as needed. 4. Check the window switch for proper function. Replace if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Power window relay Shop ↗ Fuses Shop ↗ Wiring harness Shop ↗ Window switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0339

B0337 Sequential Code

B0337: Climate Control Fan Motor Malfunction

Medium
B0338 Sequential Code

B0338: Door Locks Actuator Malfunction

Medium
B0340 Sequential Code

B0340: Seat Position Sensor Circuit Malfunction

Medium
B0341 Sequential Code

B0341: Turn Signal Lamp 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