check the oil level.
if its low on oil, add oil dumbass
Usually I'd get the "oil level low" warning [but didn't this time], went right to the shut me off before I blow a gasket warning... But of course, oil level will be the first thing I check when I get home, just was rushing out the door this morning to 4 inches of snow and sub 20 degree weather, didn't feel like opening the hood... LOL.
you will need a mech guage, a steel braided line, and a fitting, and then pull out a plug in the oil galley and put the fitting in. not sure where the best place on the ls motors is.