99 ext 4x4 v6 brakes

i just bought this truck like a month ago and would like to change the brakes and check out the rotors. my first problim is there are wheel locks on the rims and i didnt recieve the key for them, how would i got about getting them off of there?
second how can i tell what size drum brakes i have on the back of the truck to get the right pads in the frnt, for some reason that makes a difference

 

The dealer will usually have a set of master keys for the locks. I'm not sure what you mean by knowing the rear drums to get the right pads for the front. Just go you your nearest dealer or autoparts store and tell them your truck's info and they will give you the correct pads and shoes.

 

the parts store should know the size if you cant find the key find a socket almost the rite size just big enough not to fit ove it the beat it on with a hammer and make it fit the wrench it off

 

...now I see how my rims disappeared ? ... could I get them back G.B

 

lol for wheel locks I weld a old nut to the end then just take it off with impact...saves trying to get it out of the socket you just beat on it LOL as for brakes...should only be 2 sizes for us...2wd or 4wd

 

You have to measure the inside diameter of your drum so you usually have to take it off. If you want to save yourself some trouble ask the guy what are the possible sizes of the drum and then measure it from the outside with the wheel still on. Usually sizes have vary from 1.5 and 2 inches between them so it is pretty easy to figure out with a tape measurer without taking the wheel off.