We have a Whirlpool dryer GEX9868JQ0. It is squealing all time time as it dries. Can someone help trouble shoot this situation.

THere are a number of things that can squeak on dryers. It can be the belt sliding on the drum. It can be the idler arm rollers. It can be the motor. It can be the drum support rollers. (I'm betting on the this one). The drum bearings can also be causing very loud noises.

Whatever it is, you need to open up the dryer and examine the support rollers, the idler arm rollers, and the other moving parts to see which is causing the noise. You also check to see if the motor turns freely and if the belt is slipping on the drum.

Here are some trouble-shooting tips for dryer noises:

http://www.repair-help.com/kb/index.php?category=50

Here's a link to some blow-ups of your dryer:

Replacement parts for WHIRLPOOL GEX9868JQ0 | AppliancePartsPros.com (http://www.appliancepartspros.com/partsearch/model.aspx?model_id=261299)

Here are another parts places for Whirlpool parts:

Whirlpool Dryer Parts (http://repair2000.com/parts_wpdryer.htm)
"GEX9868JQ0" Parts from RepairClinic.com (http://www.repairclinic.com/Appliance-Parts?searchText=GEX9868JQ0)