Very tricky indeed ! Without the proper tools don't try it ! Remove the air filter housing. With the right tools you can now get to the 2 t-stat housing bolts. Remove the bolts and slide it out. Remove old t-stat and install new one(taking care to make sure it is positioned the correct way), re-install using gasket sealer !!! Note: easier said than done !
On 1994, its UGLY... a better idea from GM.... don't you just love car makers. Its plugged in under / inside the dash area to the left of the steering column.... above the fuse holder. Its next to impossible to reach and release the clip holder without taking off the front dash / instrument cluster.
If you didn't learn anything about Spanish after taking it for a year, I would definitely recommend taking french as I think its easier. French also has easier words and not many accents on the words so they are easier to remember.
You can get it by taking care of it or you can get it by paying but taking care of it is way easier 
by taking it to a 10 minute oil change place or a dealership.
by taking it to a 10 minute oil change place or a dealership.
The gasket on an Oldsmobile Bravada is changed by removing the retaining bolts, taking off the cover, and peeling the gasket off. The surface is then cleaned and a new gasket put in place.
Some engines are easier than others. Follow the upper rad hose from the rad to the engine and there you will find the housing for the thermostat. take the 2 bolts holding it out after taking the hose off and when replacing it make sure the spring goes toward the engine.
by taking it to a mechanic
Gender has nothing to do with taking risks.
demonstrate what you know.
Knock the old ones side ways so you can pull them out. Buy expandable plugs to install. Then you just put the new one in and tighten the bolt up, easier than the drive in plugs like the ones you will be taking out.