Best Spark Plugs For GMC Sierra 1500

If you’re looking for the best spark plugs for your GMC Sierra 1500, you’ve come to the right place. In this article, we will discuss the best options available and what factors you should consider when making your purchase. So, whether you’re a novice or a pro mechanic, read on for all the info you need to make the best decision for your truck!

2019 2020 2021 2022 GMC Sierra 1500 Spark Plugs

Info/Engine 5.3L L82 Flex 2.7L L3B Turbo 6.2L L87
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 8 4 8
Change interval 96,000 miles 96,000 miles
Best spark plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug
Popular choice NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug

 

Info/Engine 5.3L L84 4.3L LV3 5.3L L83
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 8 6 8
Change interval 96,000 miles 96,000 miles 96,000 miles
Best spark plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug
Popular choice NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug

 

2014 2015 2016 2017 2018 GMC Sierra 1500 Spark Plugs

Info/Engine 4.3L LV3 Flex 5.3L L83 Flex 6.2L L86
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 6 8 8
Change interval 97,500 miles 97,500 miles 97,500 miles
Best spark plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug
Popular choice NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug

 

Info/Engine 5.3L L8B 5.3L L83
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 8 8
Change interval 97,500 miles 96,000 miles
Best spark plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug NGK 91418 ILTR5E11 Laser Iridium Spark Plug
Popular choice NGK 4344 LTR5IX-11 Iridium IX Spark Plug NGK 4344 LTR5IX-11 Iridium IX Spark Plug

 

2007 2008 2009 2010 2011 2012 2013 GMC Sierra 1500 Spark Plugs

Info/Engine 6.2L L9H Flex 4.8L L20 Flex 5.3L LC9 Flex
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 8 8 8
Change interval 97,500 miles 100,000 miles 100,000 miles
Best spark plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug
Popular choice NGK 7397 TR5IX Iridium IX Spark Plug NGK 7397 TR5IX Iridium IX Spark Plug NGK 7397 TR5IX Iridium IX Spark Plug

 

Info/Engine 5.3L LMG Flex 5.3L LH6 6.0L L76
OEM spark plug gap 0.040″ (1.01mm) 0.040″ (1.01mm) 0.040″ (1.01mm)
Qty. needed 8 8 8
Change interval 100,000 miles 100,000 miles 100,000 miles
Best spark plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug
Popular choice NGK 7397 TR5IX Iridium IX Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 7397 TR5IX Iridium IX Spark Plug

 

1999 2000 2001 2002 2003 2004 2005 2006 GMC Sierra 1500 Spark Plugs

Info/Engine 6.0L LQ9 4.3L LU3 5.3L L59 Flex
OEM spark plug gap 0.040″ (1.01mm) 0.060″ (1.52mm) 0.040″ (1.01mm)
Qty. needed 8 6 8
Change interval 100,000 miles 100,000 miles 100,000 miles
Best spark plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 5599 ITR4A-15 Laser Iridium Spark Plug NGK 3784 PTR5D-10 Laser Platinum Spark Plug
Popular choice NGK 3784 PTR5D-10 Laser Platinum Spark Plug NGK 7164 TR55IX Iridium IX Spark Plug NGK 7397 TR5IX Iridium IX Spark Plug

 

Info/Engine 5.3L LM7 4.3L L35 4.8L engine
OEM spark plug gap 0.040″ (1.01mm) 0.060″ (1.52mm) 0.040″ (1.01mm)
Qty. needed 8 6 8
Change interval 100,000 miles 100,000 miles 100,000 miles
Best spark plug NGK 3784 PTR5D-10 Laser Platinum Spark Plug NGK 5599 ITR4A-15 Laser Iridium Spark Plug NGK 3784 PTR5D-10 Laser Platinum Spark Plug
Popular choice NGK 1465 IZTR5B11 Laser Iridium Spark Plug NGK 5599 ITR4A-15 Laser Iridium Spark Plug NGK 1465 IZTR5B11 Laser Iridium Spark Plug

Spark plugs are an essential part of your vehicle’s engine and play a vital role in the performance of your truck. They are responsible for igniting the air/fuel mixture in the cylinders, which in turn powers the engine. Over time, spark plugs can become fouled or damaged, which can cause engine misfires, loss of power, and decreased fuel economy. For these reasons, it is important to choose the best spark plugs for your GMC Sierra 1500 and replace them as needed.

There are many different types of spark plugs on the market today, so how do you know which ones are best for your truck? The first thing you need to consider is the type of engine in your Sierra 1500. GMC offers both gasoline and diesel engines, and each type of engine requires a different type of spark plug. Gasoline engines require platinum or iridium spark plugs, while diesel engines require copper spark plugs.

Another important factor to consider is the operating conditions of your truck. If you live in an area with high humidity, for example, you’ll want to choose spark plugs that are resistant to moisture and corrosion. And if you do a lot of stop-and-go driving in city traffic, you’ll want plugs that can handle the higher temperatures that are generated by this type of driving.

Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article - he will be glad to help you anytime.

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