← View Generic P0308 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0308: Cylinder 8 Misfire Detected

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$20 - $300
Parts & Labor
Difficulty
2/5
30 mins - 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 P0308 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The engine control module has detected a misfire specifically in cylinder 8. This applies to V8 engines.
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Symptoms

  • • Rough idle
  • • engine shaking
  • • loss of power
  • • flashing check engine light during acceleration
  • • poor fuel economy.
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Common Causes

  • • Faulty spark plug in cylinder 8
  • • bad ignition coil
  • • clogged fuel injector
  • • low compression
  • • carbon buildup.
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How to Fix P0308 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace spark plug for cylinder 8, test ignition coil, clean fuel injector, perform compression test, remove carbon deposits.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Spark Plugs Shop ↗ Ignition Coils Shop ↗ Spark Plug Wires Shop ↗

Essential Tool

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0308

P0306 Sequential Code

Cylinder 6 Misfire Detected

High
P0307 Sequential Code

Cylinder 7 Misfire Detected

High
P0309 Sequential Code

Cylinder 9 Misfire Detected

High
P0310 Sequential Code

Cylinder 10 Misfire Detected

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