the 94's have a 20 gallon tank. I dont really trust fuel gages, coz when they are at half or above they go forever, but half and below they seem to run out very quickly... Its wierd. Then again the GM furl pump/sending unit units are pretty wierd and have alot of strange issues. They are also very expensive to replace.

 

I put 20 gallons in my '89 2dr after cleaning out the half cup of dirt that was in my gas tank.