Make sure you crawl underneath and look at the gas junction box. Sometimes they have the lines pulled so tight they can have a kink in them. That happened with our hot water heater. Worked on electric but not on gas. The gas line exited the junction box and then made a 180 back underneath the box to the hot water heater. Had to actually remove and reposition the junction box to put some slack in the line and remove the kink.
2010 Jayco Quest G2(SOLD)
2014 Jayco Eagle 33.5RETS
2007 Ram 2500 5.9L Cummins(SOLD)
2015 Ram 2500 6.7L Cummins 4WD