Hi , my goodman furnace gmp075 3 furnace ,inducer turns on ignitor glows ,burners fire for about 5-7 sec,then turn off blower doesn't come onHi , my goodman furnace gmp075 3 furnace ,inducer turns on ignitor glows ,burners fire for about 5-7 sec,then it cuts off. What part needs to be replaced?

Before replacing anything, lightly sand or use steel wool and clean the flame sensor well. It is located across the manifold from the ignitor. Also make sure all vents are open.