In addition to the great advice that David gave, also check the
thermostat that is in the pilot flame. I think yours is a resistance
type on your Suburban, so disconnect the end of the wire pigtails on
the thermostat, measure with an ohmmeter, light the pilot, and then
measure again - should see a fair change in the resistance. On the
chance it is a microvolt thermostat, if you get no reading change,
check for a small (<1v) a mount of voltage when the flame is on.
Replacement thermostats are available from any of the RV parts dealers
(online ones too).
Best of luck,
RJ
> ------------------------------
>
> Happy New Year everyone ! My '73 Safara has a heating
> problem. The furnace pilot lights and stays lit, the blower
> comes on and off with the thermostat but no heat. Appears no
> gas flow to the chamber. Any thoughts before I pull the
> furnace out to get to the sensor?
>
> Rick B