← View Generic B0814 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0814: B0814: Immobilizer System Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B0814 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system has failed to communicate with the engine control module, preventing the vehicle from starting. This code is typically set when the immobilizer key fob battery is weak or dead.
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Symptoms

  • • Vehicle will not start
  • • may display a 'security system malfunction' message on the dashboard
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Common Causes

  • • Weak or dead immobilizer key fob battery
  • • faulty immobilizer module
  • • incorrect key fob programming
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How to Fix B0814 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace the immobilizer key fob battery, reprogram the key fob, replace the immobilizer module if faulty

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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 key fob battery Shop ↗ immobilizer module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

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🔗

Related Diagnostic Codes

Other codes that may appear with B0814

B0812 Sequential Code

B0812: Seat Adjuster Motor Circuit Malfunction

Medium
B0813 Sequential Code

B0813: Turn Signal Indicator Malfunction

Medium
B0815 Sequential Code

B0815: Audio System Malfunction

Medium
B0816 Sequential Code

B0816: Airbag System Fault - Deployment Module

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