Is sluggish and has a hard time shifting

Automatic?
sounds like it's time for a rebuilt transaxle.

Have you had the computer scanned for trouble codes yet ?

I take it that you have a standard transmission ? there is no adjustment, but on the saturns the plastic insert on the shifter lever (remove the center console) is what breaks, Napa auto parts has the replacement part for about $20, or you can go to saturn and spend $200 on replacing both cables

you may need to change the modulator valve on transmission and also check the modulator valve to be sure it's getting the proper vacum to it. the modulator valve controls shifting in the transmission. also suggest lucas transmission treatment be added to transmission fluid, it frees up stuck valves in transmission. hope this helps!!!

can be caused by anything need to have car scanned for the trouble code most auto stores such as auto zone/ advanced auto offer this service for free the code will help u determine whats wrong and help in fixing problem

I have the same problem, Noticing that my 2006 Saturn Vue, 5-speed becomes extremely hard to shift gears when the weather is cold. (Temps range from 20-43). Has been colder in the last month. What could this be?

also side note:
Our windshield wiper spray doesn't work on front window but work on back. They both started about the same time when the temps dropped to single digits. Dont know if that had any causes.

There is no reason to guess. If the check engine light is on, take the car to an autoparts store and have them scan the computer for any fault codes that are stored there. Most parts stores will do the scan for free. Getting the codes will eliminate speculation and can save you time and money. Hope this helped and best wishes.

Have your saturns battery checked out by load testing it. The charging system as well. Most auto part dealers will do this for you....Kragens, Napa, Autozone...Inspect and clean battery cables and terminals, replace as needed.
Good luck..i hope this helps, please rate me a fixya.

Check the transmission fluid level and condition. Make sure the level is correct, if it is then it may be time for the transmission for service. The transmission service time is every 30,000 miles, and if it has not been serviced the Transmission line pressure solenoid could be gummed up with dirt. Have the transmission fluid flush and the transmission oil filter replaced and hope that helps. Hard shifting is a sign of fluid restriction in the valve body in the transmission and will lead to a costly transmission failure. Good luck and keep me posted, the other thing to that would give you a hard shift is a bad throttle position sensor. But that should have given a check engine or service engine light on. 

Here's the information on your trouble codes (which explains the problem you're having).

P0740 Torque Converter Clutch Circuit Malfunction
P0753 Shift Solenoid A Electrical
P0758 Shift Solenoid B Electrical
P0785 Shift/Timing Solenoid Malfunction
P1860 TCC PWM Solenoid circuit electrical

The good news is that it is an electrical problem rather than a mechanical problem. So, you should be able to get the problem taken care of without removing the transmission. The bad news is, you'll probably have to take it to a tranny shop to get the electrical bug worked out (unless you have the knowledge/equipment to test each of the electronic components of the tranny).

Hope this helps and good luck!