Your first problem is that it’s a Saturn =P…I would say a trip to the transmission tech is in order. I would also check out how the engine is running, since there could be literal acceleration issues/performance issues with the engine. Ignition or fuel delivery could be suspect. The fact you’re going through more gas could be indicative of some engine issue (perhaps a loss of compression, or a dead cylinder). I’m not the most knowledgeable guy myself, I’m just throwing out there what I might be thinking about. Best of luck to you, one way or another!