Plowboy
New member
My 09 GMC is awesome. it has the 5.3 litre, extended cab 4x4. My question is there a specific mileage to change the oil being that it has only abot 1800 miles. Do they still use break in oil or is it stendard oil. I know it will alert me when it should be changed but I haven't owned a new GMC since 1985. thanks, Plowboy.