2000 Chevrolet Silverado wipers, windshield & visibility problems

1999-2005 chevrolet and GMC silverado style extended cab pickup trucks. Rear vent windows have a serious pinching hazard for children or adults with small fingers. The latches which open the vent windows have a cam latch that when closing the window,creates a pinching hazard. The latch flips through a scissors motion when closing , the outside of the latch flips inside of the bottom part(in between it).

I am writing to seek some assistance with an inferior product produced by GM. I have a chevy 2000 silverado z71 pick up that has piston slap starting at around 15k miles and progressively worsened which the dealer states is normal wear. This expensive vehicle also has a rear end bang into drive and then reverse again the dealer states is normal. Recently I fixed a snapped cable for the drivers window which the same kind of cable was recalled for the tail gate cables.