need some help please

[jmsmathiss]

Hello, my GE dryer has been making a loud screeching sound right when i start using it but it goes away after a minute(been like that for about 6 months) and now the sound is starting to last longer, any ideas on what it can be? i have taken the top and front panels off and im not seeing anything that sticks out as a problem but im also not 100% sure what it is i should be looking for either? could someone give me some direction i would greatly appreicate it. thank you