at the end of top radador hose be careful when you take off the cover so you do not break it.when you put the cover back on tighten both sides the same so you do not crack the cover
Best bet is to buy a good repair manual, but baring that, you can go to www.autozone.com and click on repair info and put in specifics of truck, year/make/model/engine size and it would give you info on it.