My clothes come out of the dryer wrinkled.
Do not attempt service or replace parts of the appliance unless referred to in the owner's manual. Follow all safety precautions provided in the owner's manual.
The clothing should be removed immediately after the dryer shuts off to prevent wrinkling. Also, overloading in the washer can cause wrinkling in the dryer.  
 
Check the garment label for correct drying care and drying temperatures. Excessive heat can permanently wrinkle some fabrics.