← View Generic P0349 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0349: P0349: Ignition System Misfire

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
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 P0349 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

A misfire detected in one or more cylinders, which can cause decreased engine performance, rough idling, and decreased fuel efficiency.
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Symptoms

  • • Rough idling
  • • decreased engine performance
  • • decreased fuel efficiency
  • • engine light on
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Common Causes

  • • Faulty ignition coil
  • • spark plug
  • • ignition module
  • • or crankshaft position sensor
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How to Fix P0349 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace the ignition coil if faulty. 2. Check and replace the spark plug if faulty. 3. Check and replace the ignition module if faulty. 4. Check and replace the crankshaft position sensor if faulty.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

ignition coil Shop ↗ spark plug Shop ↗ ignition module Shop ↗ crankshaft position sensor Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0349

P0347 Sequential Code

P0347: Ignition System Misfire

Medium
P0348 Sequential Code

P0348: Ignition System Misfire

Medium
P0350 Sequential Code

P0350: Ignition System Misfire

Medium
P0351 Sequential Code

Ignition Coil A Primary/Secondary Circuit Malfunction

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