Buy Now! New Spark Plug Set from 1AAuto.com http://1aau.to/id/1AETK00118 New Spark Plug Set from 1AAuto.com http://1aau.to/ic/1AETK00129 This video shows you how to install new spark plugs on your 2014-2018 GMC Sierra 1500 5.3L V8. Spark is one of the four required components for an internal combustion engine to run. If your spark plugs are failing, worn, or dirty, you may experience rough starts, rough idle, poor performance, or poor mileage. This repair was done on a 2015 GMC Sierra 1500 SLT 5.3L Extended Cab Pickup 4-Door 4WD Automatic and the process should be similar on the following vehicles: 2014 GMC Sierra 1500 2015 GMC Sierra 1500 2016 GMC Sierra 1500 2017 GMC Sierra 1500 2018 GMC Sierra 1500 Tools you will need: • 8mm Socket • Spark Plug Gapping Tool • Hose Pliers • 5/8 Inch Spark Plug Socket • Socket Extensions • Gloves http://1aau.to/ocgR/1AXSS00048 • Safety Glasses • Spark Plug Socket Subscribe: / @trq Check out our playlist: GMC Sierra 1500 3rd Generation 2014-2018: • GMC Sierra 1500 3rd Generation 2014-2018 ⚠ DISCLAIMER: While TRQ strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. TRQ is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.