GE 5 Cycle Automatic Heavy Duty Extra Large Capacity dryer is getting hot, but takes 3 cycles to dry medium size loads of clothes. I checked the back of the dryer for lint and everything is clear, including the hose and vent. There's no noise or any obvious indication that something is wrong, it just takes 3 cycles to dry. What could cause this?

All ge dryers have a center bearing on the back side of the drum and drum glides on the frontside. The glides make a scrubbing sound when bad and the drum is hard to turn. The rear bearing does a squeak thang when the plastic bearing wears thin and begins to make metal to metal contact between drum mount and rear bulkhead mount. It is an easy fix but the drum gotta come out. here is my pictorial page that shows how with videos and repair pix:
Paw Paws GE dryer repair page

http://appliancejunk.blogspot.com/2011/09/late-model-hotpoint-dryer.html

http://appliancejunk.blogspot.com/2011/08/hotpoint-dryer-eating-clothes.html

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One possibility: Air flow! Make sure that the lint trap is cleaned before each cycle. You likely need to thoroughly clean out the vent piping out the back of the machine- a buildup of lint in here can also restrict airflow.

There maybe an air flow issue. With the dryer on check the air flow from the exterior location of your home. There should be a good flow of warm/hot air coming out. If not the inside of the dryer may be full of lint.

On this dryer each of the seven automatic cycles listed on your machine perform different functions based on fabrics, load size or variables. In essence the first four settings (Heavy Duty to Delicate) relate to your desired drying temperatures of high, medium, low or extra-low respectively. The moisture level of the load is determined by the dryer's sensor system and the machine will set the drying time to an optimal level.

Whirlpool added a WRINKLE FREE feature or what one might describe as an extended intermittent tumbling time. This added cycle helps reduce wrinkling when you may not be able to unload the dryer immediately after the end of the cycle when the buzzer goes off. Starting this setting is a simple one button operation at the control panel. TheWrinkle Shield™ Plus Feature is preset to on during the permanent press cycle.

probably u need a repairman,
Gas dryers are not easy for regular folks to figure out.
Mostlikely scenarios are 1-Bad Ingnitor, 2-Bad gasvalve-Coils.

Remove back. Inspect for faulty bearings on tub or broken mounting brackets.

Hi!

You need to check the following things to sort out the issue you are facing with--

Improper sorting •Separate heavy items from lightweight items (generally, to dry a well-sorted washer load is a well-sorted dryer load).
Large loads of heavy fabrics •Large, heavy fabrics contain more moisture and take (like beach towels) longer to dry. Separate large, heavy fabrics into smaller loads to speed drying time.
Controls improperly set •Match control settings to the load you are drying.
Lint filter is full •Clean lint filter before every load.
Improper or obstructed ducting •Check installation instructions for proper ducting/venting.
•Make sure ducting is clean, free of kinks and unobstructed.
•Check to see if outside wall damper operates easily.
•Check the Installation Instructions to make sure the dryer venting is correct.
Blown fuses or tripped •Replace fuses or reset circuit breakers. Since most dryers circuit breaker use 2 fuses/breakers, make sure both are operating.
Overloading/combining loads •Do not put more than one washer load in the dryer at a time.
Underloading •If you are drying only one or two items, add a few items to ensure proper tumbling.

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Thanks
Rylee

most of the time when the syary button just busses it means the motor is gone,you can take it apart and clean and lube itmake sure nothing stuck in it,let me know if you need more help-mike

Turn off the electricity to the dryer.Try spraying the belt with automotive belt dressing inside that goes around the bucket.. If that does not work it is probably the bushing at the back of the dryer. you will have to remove the bucket to grease the bushing.if it is still good. judging by your details it seems good.But it could be dry.Needs lubrication.