Although I have three VUE consoles, all of my sensors are VP2. (I also have a number of VP2 consoles and Envoys) I am not totally familiar with VUE ISS hardware.
According to Scaled Instruments there was a change in the SIM at Rev G. You will need to confirm what level you have and what replacement hardware you need. Check with Ryan.
I see a flex cable which appears to go to the humidity sensor on one of the versions on his site.
I don't know if this is your version or if that also contains the temperature sensor (I think that it does).
The other version of the SIM doesn't have this flex cable and appears to have the sensor as part of the PCB.
From the cost of these (either one), it actually looks to be a bit cheaper just to get the entire VUE ISS on Scaled Instruments site. Rainmanweather is also a good supplier and has a competitive price. If I were in your situation, I would just get the entire replacement ISS.
Greg H.