Jim responded with really good ones:
Driving lights. Ever notice how every 3rd or 4th GM truck/suv regardless of make has one of its driving lights out??…same vendor for the last 3 generations of units and no one at GM has caught on to the quality issue??
Seats that do not have travel.
Radios w/ far too many buttons that are too small to adjust.
Horns that need to be struck with a sledge to go off and/or have a sweet spot the size of a stamp.
Mirrors with more info than the dashboard.
Gloveboxes that could not hold Barbies gloves.
Short lug nut wrenches that afford no leverage.