← View Generic B1101 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1101: B1101: Body System Code - Lighting Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
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 B1101 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a malfunction in the body control module's lighting circuit, which can cause issues with exterior lights, such as headlights, taillights, or turn signals.
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Symptoms

  • • Dim or inoperative exterior lights
  • • warning lights on the dashboard
  • • or erratic lighting behavior.
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Common Causes

  • • Faulty body control module
  • • wiring damage
  • • or a malfunctioning lighting component.
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How to Fix B1101 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the body control module for any signs of damage or corrosion. Clean or replace as needed. 2. Inspect and repair any damaged wiring. 3. Replace any faulty lighting components. 4. Update the body control module's software if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body control module Shop ↗ Wiring harness Shop ↗ Lighting component Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with B1101

B1099 Sequential Code

B1099: Window Regulator Malfunction

Medium
B1100 Sequential Code

B1100: Seat Switch Circuit Malfunction

Medium
B1102 Sequential Code

B1102: Body Control Module (BCM) Security System Malfunction

Medium
B1103 Sequential Code

B1103: Audio System 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