Idler pulley- under warranty.
Top of shifting housing leaking- under warranty.
Driver side visor replaced- under warranty.
Right rear door seal replaced- under warranty.
Horn replaced- saturn recall.
Fuel pump replaced- saturn recall.
Front end alignment- under warranty.
Serpentine belt tensioner pulley- $80.
Oxygen sensor (upstream) - $80.
Coolant temperature sensor- $12.
Coolant temperature sensor wiring harness- $34.
Driver side wheel bearing- $80.
Service engine soon light had to be diagnosed many times by dealer. Found out that many national auto parts stores will check error codes for you using a hand held OBD II scanner for no charge to you. Now, when ever the service engine soon light comes on I take the car to an auto parts store and not the Saturn dealer.
Quite a few parts that are causing error codes can be cleaned instead of replaced, such as the exhaust gas recirculating valve (EGR valve)
The car burns one quart of oil every 3000 miles. So I change the oil and filter at those intervals.
You have 129k on it and you expect nothing to deteriorate?