Small Problems on 05 Silverado, any tips?
 

i own 3 gm trucks. a 01 gmc 1500 5.3, an 04 gmc 1500 5.3 z71, and an 05 chevy silverado 2500hd 6.0. the 05 has little ticks that bother me, but im picky about my trucks to begin with. it has wind/ air noise in the weatherstripping just before the top of the driver and passenger doors. one of my friends also has an 05 2500 with the same problem. any ideas on what the problem is? also (it is an ext cab) the back doors have habits of not latching all the way on the top, once again friend has the same problem on his 05. and last but not least the outside handle on the drivers door sticks, doesnt return all the way, (both 05's again). but i dont have any of these problems on my 01 or 04. did gm change something, and any solutions for these problems? any help is appreciated. thanks