If the door groans, jerks, or stutters partway up, that's usually a spring losing tension unevenly across a double-wide steel door - common once a torsion spring built around 1995 reaches the far end of its rated cycles. A door that reverses right after it touches the floor, or won't close at all, almost always traces back to the photo-eye sensors near the bottom of the track, which drift out of alignment more than people expect on a door this age. Grinding or popping when the door moves usually means a roller has worn through its bearing. None of these are usually the whole door - they're one part failing inside a system that's otherwise sound for a 1990s build, which is good news for the repair bill.