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Silverado Spark plugs Install Guide

Your Silverado

Pick your year to see what fits.

This page covers the US Silverado 1500 and Sierra 1500 V8.

Restores lost power
Medium$100–$1201–2 hrs
All Silverado mods

Why do it

Worn plugs cost power and throttle response.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Before you start

  • Work on a cold engine. Do one plug at a time.
  • Work on a cold engine. Do one plug at a time.

Steps

  1. Remove the wires

    • Take off the fender liner access and disconnect the wires.
    Watch this step (TRQ, on a 2014-2018) (1:35–2:06)

  2. Remove the old plugs

    • Take them out.
    Watch this step (2:06–2:44)

  3. Fit the new plugs

    • Thread them in and torque them.
    Watch this step (2:44–3:03)

  4. Reconnect

    • Refit the wires and liners.
    Watch this step (3:03–5:33)

  5. Get to the plugs

    • Clear the way.
    Watch this step (Wrenching, on a 2019+) (2:27–3:57)

  6. Remove the wires

    • Pull the wires.
    Watch this step (3:57–5:58)

  7. Replace the plugs

    • Replace each plug.
    Watch this step (5:58–13:45)

  8. Reassemble

    • Refit everything.
    Watch this step (13:45–16:57)

How to know it worked

Did this guide work for you?

Safety first

  • Park on flat ground, set the parking brake and chock the wheels.
  • Never get under a car held up only by a jack. Use jack stands.
  • Let the engine and exhaust cool first.
  • Disconnect the battery before unplugging electrical parts.
  • Wear safety glasses.
  • If something doesn't match your car, stop and ask a shop.

Follow your part's instructions and your service manual's torque specs.

Spark Plug install guides for other cars

More Silverado mods