2003 Suburban - Oil question

synthetic oil is great, longer life, better lube. but it mostly boils down to what your owners manual says. If it says you can use it then yes i reccomend. but if not then i would not, i belive with your year you would be ok.

I quickly looked at the manual and it just says to look for the "star burst". The one that says it is approved by the something auto group.

Thanks

then you shoudl be good to go with synthetic.