How To Change 2014-2018 Silverado Sierra 5.3 6.0 6.2 Spark Plugs (3rd Gen)

Summary

In this video, the creator demonstrates how to replace the spark plugs on a 2014 Silverado with a 5.3-liter engine. The process includes removing the tires, fender liner, and spark plug wires, then using a variety of tools to extract and replace the spark plugs. While seven of the plugs are relatively straightforward, the eighth spark plug is more challenging due to tight space. The video provides helpful tips on handling difficult areas, proper torque settings, and ensuring the job is done safely. The creator also emphasizes using the right tools and techniques to avoid damaging the vehicle.

Takeaways

• 😀 Always jack up the truck and use jack stands for safety when working under the vehicle.
• 😀 Use a 22mm socket to remove the lug nuts and a 15 Torx screwdriver to remove the fender liner screws.
• 😀 Spark plugs are pre-gapped, so no need to adjust the gap before installing them.
• 😀 When removing spark plug wires, always pull from the base to avoid damaging the wire connection.
• 😀 Use hand tools (not impact tools) when removing spark plugs to avoid breaking them or damaging the threads.
• 😀 A 5/8" spark plug socket with extensions makes removing and installing spark plugs easier.
• 😀 Spark plug #8 is difficult to access due to tight space, requiring a 1-inch extension and careful maneuvering.
• 😀 For spark plug #8, you may not be able to torque it accurately due to space limitations, so tighten by feel.
• 😀 Always apply dielectric grease to spark plug wires to prevent corrosion.
• 😀 Reinstall the fender liner and tires once the spark plugs have been replaced, and check the vehicle for any issues after the replacement.
• 😀 Regular spark plug replacement is recommended every 100,000 miles to maintain engine performance.

Q & A

Why is replacing spark plugs on a 2014 Silverado 5.3L considered challenging?

Replacing spark plugs on a 2014 Silverado 5.3L is considered challenging because of limited space, especially around spark plug number eight. This makes it harder to access and remove the plugs, particularly when dealing with obstructions like the steering column and firewall.

What tools are necessary for replacing spark plugs on this truck?

The necessary tools include a jack, jack stands, 22mm socket, 15 Torx screwdriver, needle nose pliers, 5/8” spark plug socket, ratchet wrench, extensions, torque wrench, and optionally, dielectric grease.

How often should spark plugs be replaced on a 2014 Silverado?

Spark plugs should generally be replaced every 100,000 miles. However, in the video, the truck is at 94,000 miles, and the replacement is done slightly earlier than recommended due to requests from viewers.

Why is it important to support the vehicle with jack stands?

It is important to support the vehicle with jack stands for safety reasons. This ensures that the vehicle remains stable and secure while working underneath it, preventing accidents or injuries.

What should you be careful about when pulling spark plug wires?

You should be careful not to pull on the spark plug wire itself, as this could damage the connection. Instead, always pull from the base of the wire to avoid causing any harm to the wiring or connections.

Why is it recommended to use hand tools to remove spark plugs?

Using hand tools is recommended because it prevents over-tightening or breaking the spark plug. Using an impact wrench can cause damage to the spark plug or the engine block, which could lead to further complications.

What is the role of dielectric grease in this process?

Dielectric grease is used to prevent corrosion and ensure a good electrical connection. Applying it to the spark plug wire connections helps maintain the performance of the spark plugs over time.

What makes spark plug number eight so difficult to replace?

Spark plug number eight is difficult to replace because of the limited space around it, particularly due to the bump out in the passenger footwell area and the proximity of the firewall, which restricts access.

How can you make the removal of spark plug number eight easier?

To make removal easier, use a 5/8” spark plug socket with a one-inch extension. This setup allows for better access, although it may still be a bit tight due to the limited space.

Why is it not possible to use a torque wrench on spark plug number eight?

Due to the limited space and the positioning of components, it's difficult to fit a torque wrench on spark plug number eight. In this case, the user resorts to tightening it by feel rather than using a torque wrench.