First thought the sparker at the burner was out so went to my local appliance parts store and purchased a new one for $32. This did not fix the problem. Traded the good sparker in the front with the bad one in the back and still no spark in the back but now the bad sparker is working in the front. Should have done this in the first place. Now I know it is the igniter terminal block. I then decided I can wait a week to get the part cheaper online. The original sparker from AppliancePartsPro.com was $13 compared to $32 at the local appliance parts shop. The terminal block was around $50 online so it probably would have been over $100 from the local shop. The other great thing is the Youtube instruction videos. Sorry brick and mortor, next time I will go direct to AppliancePartsPro.com. Oh, I also got the online part in 2 days without paying any extra shipping fees. Good job AppliancePartsPro.