Hey guys, thinking about picking up an 02 tahoe from my buddy as a daily driver for the winter time here. Truck has 155000 miles on it and seems mechanically sound. Has the cold start knock/slap which does concern me. srs light and check engine light is on he said it was for tps. Truck has a cowl hood,intake,exhaust and a few other goodies like a nice stereo system and leather. He is firm on the price of 4000. Do you guys think that is a decent deal? Does the truck stilll have life left in it? His dad was the original owner and then it was passed down to him. I know he drove it hard at times but stilll seems to run good. Help me out with some input guys!!