Try lighting the stove burners for a minute or so. You may not have all the air purged from the lines so it's not getting any gas to light.
Not familiar with Norcold, but most RV fridges will try lighting 3 times, then it will lock out. You need to then turn it off and back on to reset it; then it will try 3 more times.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10