← View Generic B0374 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0374: B0374: 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 B0374 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The immobilizer system, which prevents the engine from starting without the correct key, has malfunctioned. This code indicates a problem with the immobilizer system's communication with the vehicle's computer.
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Symptoms

  • • Engine won't start
  • • key fob won't work
  • • or alarm system won't disarm
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Common Causes

  • • Faulty immobilizer module
  • • bad key fob battery
  • • or incorrect key fob programming
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How to Fix B0374 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the key fob battery and replace it if necessary. 2. Check the immobilizer module for any signs of physical damage or corrosion. 3. If the problem persists, reprogram the key fob or replace the immobilizer module.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

immobilizer module Shop ↗ key fob Shop ↗

Essential Tool

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0374

B0372 Sequential Code

B0372: Seat Position Sensor Circuit Malfunction

Medium
B0373 Sequential Code

B0373: Illumination Control Module (ICM) Malfunction

Medium
B0375 Sequential Code

B0375: Audio System Fault

Medium
B0376 Sequential Code

B0376: Airbag 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