What transmission fluid type for a 2005 saturn ion? and how many quarts?

This guy says 2 quarts 1.8 to be exact
How to change transmission fluid in VUE with manual transmission...

Transmission Fluid Replacement 2002 2007 Saturn Vue

22's answer as to location is correct. Check the fluid after the vehicle has warmed up and with the engine running. Check your manual for fluid type if any is required (should be type "F"). Do not overfill as it will not help. If fluid is a qt low you ahould check transmission lines going from radiator to the tranny as there is a leak somewhere. Also look around the transmission pan for leaks. Slipping of the transmission is the most obvious indicator of low fluid, stepping on the gas but the transmission doesn't push you faster. Hope this helps. GT

Dextron is fine.

Transmissions have "filters." It may need to be changed as the fluid may be dirty and clogging some of the pressure valves in the ******.

Your car takes Dextron III automatic transmission fluid.

Assuming that it's an automatic transmission it takes about 2 and 3/4 quarts of The correct type of ATF, check the dipstick the fluid type is imprinted on it, should be Toyota type T- IV fluid or equivalent.

There is no dipstick for the transmission in these vehicles. There is a check plug underneath the car, just a couple inches above the transmission pan. You must have the car running in park, at normal operating temperature, and pull the plug. The fluid should be level with the check hole.

To fill, run the car in park, pull the plug, remove the red cap on top of the transmission and fill until it pours out of the check plug.

It will take 6.9 quarts of tranny fluid.

If you have any more questions dont hesitate to ask!

It should say on the cap, and it will be in the owners manual. If you don't have one you get get a free electronic copy from GM here
It is probably the same as your transmission fluid - but I have never owned a Saturn.