Does anyone have a link, because Im sure it has been discussed, when is it recommended to change the spark plugs in a 2009 SREW Platinum?

 

Did you look in the maintenance schedule that came with the truck? It should be spelled out there for ya.

 

Factory plugs are supposedly good for 100k.

 

You may get a spark at 100,000 miles but it may not be as efficient as it was at 75,000 miles. I would recommend 60,000 - 75,000 miles at the most if you tow or use aftermarket fuel additives of any kind on a regular basis. These products tend to wear down the electrodes at a faster rate.