Oven issues - pilot won't stay lit

[TexasATM]

Howdy -

I'm having issues getting my oven to light... Sometimes the pilot will light without issue, but other times (most of the time, actually), I can't get it to light. I know that there is gas coming out of the port because I can get a tiny blue flame going, but it goes out after 5 seconds or so on it's own, or immediately when I release the knob.

I've actually had the issue since it was new, but the dealer couldn't recreate it, so nothing was done under warranty (shocking, I know).

Any thoughts on how to best troubleshoot?

[Old-Biscuit]

IF the pilot is only a tiny little blue flame then probably NOT the thermocouple.

Pilot flame has to be big enough to engulf tip of thermocouple to heat it so that oven control knows to allow gas to continue to flow and to allow main gas to flow when called for.
Thermocouple would be suspect IF pilot flame was big enough to reach/heat thermocouple

Low pilot flame is due to either plugged pilot gas line or gas control thermostat (device oven knob is attached to)

I disconnected the pilot gas tube at controller and blew it out with air pressure.....oily gunk (for propane) came out.
Pilot flame then was big enough to reach/heat thermocouple

[We_Cant_Wait]

Somewhere in and around your year Suburban had this issue with their stoves and I had the part needed to repair the unit replaced for free, just don't remember the part. Worth a try calling Suburban about it.

[TexasATM]

I wasn't sure if the RV ovens used a special one or not. I've replaced those on my home oven before, so I'll start with that. Thanks for the advice!

[sch911]

Just replace the THERMOCOUPLE. Easy to replace, available at Home Depot or Lowes.