best thing to do is look on your door side panel and it will tell you what your weight is, for example.

My C70 truck weighs in at 13,780lbs, empty weight. my GVW is 28000 thats is the max I can put on a my bed,



or if you really want to know head over to cat scale, and just be sure you fill your tank up with gas.. and then weigh it, it will cost you 10 bucks..

good luck.