I show the steps I used to replace the spark plugs and spark plug wires. The 2014 Chevy Caprice PPV has a 6.0L L77 engine. ACDelco lists the spark plugs for the 2011 to 2014 Caprice PPV L77 engine as 41-162 Iridium spark plugs. The owner’s manual lists the correct plug as 41-110 Iridium spark plugs and ACDelco shows that the 2015 to 2017 Caprice PPV use the 41-110 Iridium spark plugs.
Since my engine was using 41-110 Iridium plugs, its owner’s manual lists the correct plug as 41-110 and the 2015 to 2017 list the 41-110 as the correct plug and the 2015 to 2017 are the most similar to my 2014 Caprice PPV, I used ACDelco 41-110 Iridium spark plugs.
I replaced the original spark plug wires with ACDelco 748UU since they are listed as the original equipment (OE) version of the spark plug wires for this engine.