← View Generic B3454 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3454: B3454: Immobilizer System 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 B3454 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system has detected a malfunction, preventing the vehicle from starting or running. This code indicates a problem with the immobilizer system's communication with the engine control module.
⚠️

Symptoms

  • • Vehicle won't start
  • • engine won't crank
  • • or runs rough
🔍

Common Causes

  • • Faulty immobilizer system module
  • • faulty key fob
  • • or incorrect key code
🛠️

How to Fix B3454 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the immobilizer system module for any signs of physical damage or corrosion. Replace if necessary. 2. Check the key fob for any signs of damage or corrosion. Replace if necessary. 3. Check the key code and ensure it's correct. 4. Update the immobilizer system module's software 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

immobilizer system module Shop ↗ key fob Shop ↗ key code 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 B3454

B3452 Sequential Code

B3452: Seat Position Sensor Malfunction

Medium
B3453 Sequential Code

B3453: Exterior Lighting Malfunction

Medium
B3455 Sequential Code

B3455: Audio System Fault

Medium
B3456 Sequential Code

B3456: Airbag System Fault

High

💡 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