Should I Cover Grill In The Winter?

Does my truck have a engine misfire or transmission problem? Why does my starter keep cranking on my 66 T-Bird? Should I use a radiator cover (cold front) on my truck? Do you think my rear wheel bearings on my Suburban are bad? Swapping LS engines between years. Fixing AFM. Trans shifting issues in a 1994 F150. A Dodge Power Wagon from the 1960s with a rusty tank. 2012 Ford F150 Start Up Rattle. 2006 Silverado Trans Shift issue.