Frigidaire Dryer GLER642AS3 loud squeaking. Squeaking sound probably coming from drum rotation bearing. Is there an easy way to get in to oil that location to stop squeaking noise? Thanks!

The loud, constant squeak/squeal from your Frigidaire dryer, combined with a burning smell, indicates a serious problem that needs to be addressed. While replacing the drum bearing kit was a good step, it appears that there may be other issues at play.
One possible cause of the squeaking could be a worn or damaged drive belt or idler pulley. If the idler pulley spring came off, it is possible that the belt is not properly tensioned and may be slipping or rubbing against the drum, causing the squeaking noise. Additionally, a slipping belt can generate a burning smell as it heats up from the friction.
Another possible cause of the burning smell could be a malfunctioning heating element, which may be overheating the dryer and causing the burning odor.
It is recommended that you stop using the dryer immediately and unplug it from the power source. It is not safe to continue using a dryer that is producing a burning smell.

Drum felts or rear bearing have worn out. I'd say replace both to be safe and solving future issues.

there is a belt tension'er it might need to be replacing or temp fix greasing or drum bearing replacing or temp fix greasing to do this you will have to remove the drum

Sounds like your motor and/or pulley assembly are bad. Try turning the drum by hand. If it turns with some effort then you may have a drum bearing going bad. Does the squeaking sound start right away? Or does it start when the dryer warms up? If so then the bearing is going. If you can get to it spray WD40 for a quick fix.

ABSOLUTELY! There is a plastic piece in the back that the center ball piece on the back of the drum spins in. Thats your bearing, replace it.

it's most likely the rear bearing that the drum rides on in the rear of dryer,you'll need the model number located around the door opening to order the right part.

Yes. Replace the rear bearing cup that the drum sits down into. Do not oil. This cup takes a special grease that you can get with the cup. Also don't let anyone try to sell you the whole bearing kit. All you need is the cup and the grease.

It sounds like you may have a bad bearing in the back of the drum. That model rotates on a sort of ball and socket type mechanism. You may be able to lubricate it if the noise is just squealing/squeaking. If it is more than that, you'll probably need to replace the bearing mechanism. If you lube it, use a heavy weight lube that is rated for high heat (I've used brake caliper grease.)

Post your make and model please. Sounds like the rear drum bearing is dried up

Solution: the drum slides were worn out and needed replacement.