Upvote:0
You should probably read through this web page. It has all the information you need. To specifically answer your questions:
Upvote:1
No need to grab & recheck the bags, but you have to fill out your Canadian customs declaration card and go through immigration/customs. 1.5 hours should be fine unless there is a total mess at immigration.
Minimum connection time for this would be 60 minutes. See https://www.aircanada.com/us/en/aco/home/plan/check-in-information/minimum-connection-times.html