Car seat troubles

My son has always loved the car but recently as soon as he gets into his car seat he freaks out! He screams the whole time. Do you guys think it's time for a new car seat? It says it goes up to 35 pounds and he's 17 pounds but he's pretty tall, 28 inches. He has the Graco snug ride click connect infant seat. He just suddenly hates it. It makes going anywhere absolute hell lol.