Hi, Yes the mirror caps snaps on easily. But you have to carefully push it in on the sides.

Yes, it will snap on. There are 4-5 different “catches” that will clip into place, assuming the rest of the mirror housing is not damaged.

Yes it does.

Yes

Hi Michael, I'm glad to assist you. Upon checking, based on the selected vehicle application. We do not carry the mirror lower bottom half covers. We only have the set of covers for the upper portion.

Hi, As per checking, this pair of mirror cover is not compatible with your given vehicle application. The correct part number is (listed as each left and right) is RB959001 and RB959002, by our premium brand Dorman. https://www.carparts.com/search?q=Mirror_Cover&vehicle[cylinders]=8&vehicle[liter]=4%2E8&vehicle[submodel]=SL&vehicle[model]=Sierra_1500&vehicle[make]=GMC&vehicle[year]=2007&filters[universal]=false

Hi Brady, Yes, these fit the 2013 Chevrolet Silverado 1500 new body style models.

Hi, This is just the mirror cover, not the mirror assembly with the glass, and turn signal light. To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all category, search results, and product pages — can help verify if a part will fit your specific application. To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.