← View Generic B0093 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0093: B0093: Body Control Module (BCM) - Exterior Lighting Circuit 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 B0093 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the exterior lighting circuit, which may include issues with the headlights, taillights, or turn signals.
⚠️

Symptoms

  • • Dim or inoperative exterior lights
  • • faulty turn signal indicators
  • • or intermittent lighting issues.
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Common Causes

  • • Faulty BCM
  • • wiring damage
  • • corroded connections
  • • or a malfunctioning exterior light module.
🛠️

How to Fix B0093 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and clean all exterior light connections and wiring. 2. Replace the BCM if faulty. 3. Inspect and replace the exterior light module if necessary. 4. Check and repair any wiring damage.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module (BCM) Shop ↗ Exterior Light Module Shop ↗ Wiring Harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0093

B0091 Sequential Code

B0091: Power Window Relay Circuit Malfunction

Medium
B0092 Sequential Code

B0092: Seat Position Sensor Circuit Malfunction

Medium
B0094 Sequential Code

B0094: Immobilizer System Malfunction

Medium
B0095 Sequential Code

B0095: Audio System Fault

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