Check power steering, transmission, differential and brake fluid levels. Replace the gasoline filter because water can enter the fuel tank in winter. Lubricate door, trunk and hood hinges to get rid of winter-induced squeaks. Make sure all lights work, from turn signals to backup lights. A vehicle should steer precisely and smoothly, and the alignment should allow tires to wear evenly and correctly grip the road.
Some vehicles call for both front and rear alignment to be checked.
If the big Firestone tire recall didn't make people more aware of correct tire pressures, it should have. Correctly inflated tires are especially important in warm-weather driving because it invites higher speeds that can caused underinflated tires to overheat and fail. Make sure tires don't have sidewall cracks or nails in the tread area. Check tires the first thing in the morning or when they've cooled down for a few hours after a drive. Otherwise, you'll get an inflated reading.