the driver door on my 07 tahoe will not latch to the striker

 

Try holding the handle in open position and rotate the clasp in the side of the door. if you look at it you should see it's in closed position and needs to be rotated open to work again. Then lubricate all parts on all doors once it's fixed.

 

Welcome to the forum. If that doesn't work, you may have to take the door panel off to see what's causing the mechanism to malfunction.