← View Generic B0845 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0845: B0845: Illumination Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B0845 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a problem with the vehicle's lighting system, such as a faulty headlight, taillight, or brake light.
⚠️

Symptoms

  • • Dim or non-functioning headlights
  • • taillights
  • • or brake lights
  • • or a warning light on the dashboard.
🔍

Common Causes

  • • Faulty headlight or taillight bulb
  • • wiring issue
  • • or a problem with the body control module.
🛠️

How to Fix B0845 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the headlight or taillight bulb and replace if necessary. 2. Inspect the wiring harness for damage or corrosion and repair if necessary. 3. Check the body control module for any fault codes and clear or replace if necessary.

🔧

Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

headlight or taillight bulb Shop ↗ wiring harness Shop ↗ body control module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B0845

B0843 Sequential Code

B0843: Power Window Circuit Malfunction

Medium
B0844 Sequential Code

B0844: Seat Position Sensor Malfunction

Medium
B0846 Sequential Code

B0846: Immobilizer System Malfunction

High
B0847 Sequential Code

B0847: 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