My stackable dryer is squeakin what is the problem it an ge

All dryers have to have a way of allowing the tumbler (that's the thing you put the clothes in) to turn freely, not all of them are the same tho,some use bearings, some use slides,others use rollers. Over time these rollers will need to be oiled,the slides will get thin and start metal to metal contact causing a noise, The rear bearings will then start to make their way to china and cause the tumbler to rub into the heating element and OUCH! These things will cause the motor to prematurely DIE! Its best to examine the dryers, rollers, and slides when you first hear the noise.