Friggidaire used to make dyers for GE (example model number: WSM2700HBWWW) back when GE was too busy building shoddy Mark 1 nuclear power plants to build their own shoddy dryers; those came later... and they're pretty damn shoddy. The Frigidaire-built units were better though not nearly as good as the Whirlpool units with the lint filter i the top panel.
Anyway, if your dryer Frigidaire-built GE dryer is making a squeeling noise in back, you probably need to replace the rear bearing kit.
This unit is made by Frigidaire, here's a link to the bearing kit which includes a how-to video:
For manuals and lots of other goodies, become an Apprentice==> http://appliantology.org/apprentice/
Source: GE WSM2700HBWWW replace rear bearing