Just received following response from your team..
"Asked by Akram H. for Model JGP328WEC2WW
Hello Akram, It sounds to me as though you need to replace the switch harness AP3783914. If the knob won't turn now you either have melted plastic from the switch in the valve AP3187586 or the valve is seizing.
Read more: http://www.appliancepartspros.com/questions-for-GE-Top-burner-gas-valve-AP3187586-qid49121.aspx#q49121#ixzz1rZsfZxcd
It was little tuff, but I am able to turn it now. I am also able to turn the burner on but it won't ignite the burner, nor do I hear the sound of the ignitor.
So I am guessing it is just the burned switch Harness..
Can someone tell me how I can open and view the switch Harness?
Do I have to open it up from top or bottom? I would prefer if any video or instruction on how I can reach the switch harness and replace it.
Answer Hello Akram,
Turn the gas off to the unit. Disconnect the power supply to the unit. Raise the unit and set it diagonally over the hole in the countertop. Remove the burner caps and arrange them on the counter so you know where they go back. Remove the two screws in each of the burners and carefully remove the ignitor wires. Also place them on the countertop so you will know where to put them back on the unit. Most units have screws along the sides and ends which have to be also removed to remove the top assembly. The top should then lift off. assembly is, of course, reverse of the disassembly. One note: I always routed the ignitor screws into their respective holes and taped them down to prevent having to re-disassemble to retrieve one wire that fell back through during reassembly.
If one of the valves is hard to turn, that valve is bad and on a gas unit, all parts which don't work exactly right should be replaced to prevent it becoming a hazard to everyone in the home.