If you mean you'll be driving the Alaska Highway (there is no Alcan here :B ) in winter, you can visit my webpage to see pictures of our RV trips in winter and also a drive I made to Anchorage in March 2014.
Generally conditions are good if the weather cooperates. Mid-January can be variable - sometimes we have are warming trend then, sometimes we're in a -40 ish deepfreeze. Northern B.C. is often colder than Yukon, especially through the Fort Nelson to Liard River area.
Do be sure you have a block heater in that truck and be sure you find a place to plug it in when the temperature drops below the starting ability of your vehicle. Every vehicle seems to have its own tolerance level for cold. Most lodges/motels provide a place to plug-in for guests.
Synthetic oil all around is good for the cold too, especially in the tranny.
If your truck is diesel, it might be fussier about cold starts. If it is regular fuel, carry a bottle of gasline antifreeze, just in case.
We don't have studs on any of our tires. Have never had an issue. I carry chains but have NEVER used them. My car seems to enjoy just crawling through the snow.