If you're thinking to fire the car up during the winter, don't bother unless you're gonna get it out on the road for 15-20 min. or so and bring all the fluids up to operating temperature. Starting it up for a minute or so just to back it out of the garage and then doing the same thing a few hours later to put it back in will do the car no favors.
Wait for dry days and take the car out on the highway for a good 30-45 minute boot. I've been doing this almost from the beginning with my '98 SS during the winter. No problems at all.
It's a bit scary though, when you take off the oil filler cap and see all sorts of gray sludge on the inside of it after thinking it's OK to start it up and just let it idle for 10 min., once a a week or so when it's off the road for the season.
The differential fluid also needs to be brought up to operating temp as well. This won't happen if the car is not driven.
... and remember to run the A/C for 5 min. or so in order to keep the seals in the system lubricated.
Last but not least, keep in mind that even if the roads are dry, your summer tires will have only a fraction of their usual grip in the cold weather - so just go easy on throttle, steering and braking inputs.
I really do look forward to getting the car out for a run on those cold, dry days - it definitely rejuvenates the spirit!!
Best regardSS,
Elie