i recently bought a bone stock 2 owner 02 duramax ext cab with 182000 miles. talked too guy who owned it before. he had no trouble but he did say sometimes it would leak a very little bit of antifreeze. ive owned a 04 before and at 130000 waterpump went out. my question is tonight it sounded like the motor was ticking at about 2200 rpms and up, and when i got home and got out of the truck i smelt antifreeze, when my other trucks water pump went out the truck never actually smelt like antifreeze. but it does leak a small spot around the middle of underneath the motor. my question is could the antifreeze be burning off and smelling like that and the ticking just be a duramax thing or could i have some sort of another issue like HG? also truck when you turn or hit the breaks once it whines a little. Thanks for any advice. the upper radiator hose dosent seem too be hard either.