← View Generic B1885 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1885: B1885: Body Control Module (BCM) Malfunction - Lighting

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 B1885 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the lighting system, which may cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.
⚠️

Symptoms

  • • Dim or inoperative exterior lights
  • • faulty turn signal indicators
  • • or erratic lighting behavior.
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Common Causes

  • • Faulty BCM
  • • wiring issues
  • • blown fuses
  • • or damaged lighting components.
🛠️

How to Fix B1885 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace blown fuses. 2. Inspect and repair or replace damaged wiring. 3. Update the BCM software if necessary. 4. Replace the BCM if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

BCM Shop ↗ fuses Shop ↗ wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1885

B1883 Sequential Code

B1883: Power Window Regulator Malfunction

Medium
B1884 Sequential Code

B1884: Seat Position Sensor Circuit Malfunction

Medium
B1886 Sequential Code

B1886: Body Control Module (BCM) Security System Malfunction

Medium
B1887 Sequential Code

B1887: 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