i was wondering if my truck has posi, or if my 4wd is locked or something? it leaves two even skid marks, but i really didnt expect that. kind of a stupid question, but does anyone know?

 

Look at your rear axle tag, located on your rear axle differential cover. Write down what you see, and we'll tell ya what it all means.

I believe the rear axle tag will say "LS" if you have limited slip. I have an open rear, and leave dual tire marks sometimes.