← View Generic B1123 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1123: B1123: Window Regulator 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 B1123 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a problem with the window regulator motor or its associated wiring, preventing the window from moving properly.
⚠️

Symptoms

  • • Window fails to move
  • • makes unusual noises
  • • or gets stuck
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Common Causes

  • • Faulty window regulator motor
  • • broken or damaged window regulator arm
  • • wiring issues
  • • or faulty window switch
🛠️

How to Fix B1123 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to prevent accidental window movement. 2. Remove door panel to access window regulator. 3. Inspect and clean wiring and connections. 4. Replace faulty window regulator motor or arm if necessary. 5. Reassemble and test window function.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Window regulator motor Shop ↗ Window regulator arm Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1123

B1121 Sequential Code

B1121: Climate Control Blower Motor Resistance Fault

Medium
B1122 Sequential Code

B1122: Door Locks Malfunction

Medium
B1124 Sequential Code

B1124: Seat Height Sensor Circuit Malfunction

Medium
B1125 Sequential Code

B1125: Body Control Module (BCM) 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