← View Generic B3145 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3145: B3145: Climate Control Fan Motor Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$150 - $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 B3145 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a malfunction in the climate control fan motor, which may cause issues with airflow and temperature regulation.
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Symptoms

  • • Inconsistent airflow
  • • uneven heating or cooling
  • • unusual noises from the climate control system
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Common Causes

  • • Faulty fan motor
  • • faulty fan motor resistor
  • • clogged air ducts
  • • faulty climate control module
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How to Fix B3145 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to prevent electrical shock. 2. Locate the fan motor and resistor. 3. Check for any signs of physical damage or corrosion. 4. Test the fan motor for proper operation. 5. Replace the fan motor or resistor if faulty. 6. Reassemble the climate control system and test for proper function.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Fan motor Shop ↗ Fan motor resistor Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3145

B3143 Sequential Code

B3143: Audio System Malfunction

Medium
B3144 Sequential Code

B3144: Airbag System Fault

High
B3146 Sequential Code

B3146: Door Locks Actuator Malfunction

Medium
B3147 Sequential Code

B3147: Power Window Regulator Circuit 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