I am thinking about buying a 03/04 silverado 1500hd crewcab with 77xxx miles on it. When turning this truck sharply I hear a single popping noise. Also when accelarating the transmission from 1st to 2nd seems like it hops into gear. Is this normal. I have drove this truck several times and seems to run good besides these few problems I have noticed. Someone told me that these are common problems with these vehicles. Can someone please help me decide if I should buy or stay away from this one.