Where is the thermostat on my 2003 Saturn Ion Level 3? I have no steam or smell but my needle on the dash keeps creeping up to almost the red mark. When i drive and don't idle it goes back down. Hel

SOURCE: MY SATURN VUE 2003 6 CYLINDER IS leaking anti freeze

The water pump is on the front of the engine. Does it look like a hose leak?

SOURCE: coolant light 2004 saturn ion 4 cylinder

I had the same problem. My 2004 Ion had 85000 miles on it. It was a bad sensor. The whole coolant reservoir tank needs to be replaced to fix the problem. This was covered under the extended warranty that we had. If you are doing this repair yourself, a hose clamp tool is recommended for simplicity.

SOURCE: where is 2003 saturn ion thermostat?

FACEING the ENGINE It is At TOP RIGHT SIDE Close to Master Cylinder takes About 1 hour to Replace Have Fun its a EASY One
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1. Drain the cooling system.
2. Remove the bolts that secure the thermostat housing to the water pump feed pipe.

1. Remove the thermostat and retaining sleeve, noting the orientation for installation.

1. Install the feed pipe that connects the thermostat housing to the water pump.Notice: Refer to Fastener Notice in Service Precautions.
   
   
   1. Install the bolt that secures the water pump feed pipe.
   • Tighten the bolt to 10 Nm (18 inch lbs.) .
   1. Fill the cooling system.

SOURCE: How to replace coolant tank on Saturn SL2

The antifreeze tank is held on by I believe two bolts on the side. It's pretty easy to remove,

Just unbolt, remove hose and do the reverse with your new one.

As far as a replacement, I'd junkyard or ebay one. Lot cheaper, quicker, and easier than trying to get an aftermarket one and modifying to fit.

SOURCE: 2003 saturn ion 3 driver side window won't roll down

It may mean a bad switch, regulator, or motor.

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you can test the switch to see if it's the switch that's broken. If not, you can then pull off the weather seal and access the insides of the door