You are planning to tow a 17' travel trailer with your Montana?

That's what warranty is for.
I'm assuming the weight is within the towing limits.
Depends on the trailer of course:
Lightweight & Aerodynamic Design
There are many key features about the Escape which make it lightweight and aerodynamic, keeping travel costs to a minimum. With a dry weight of only 1900 lbs (plan A or B), the Escape 17’ has been designed specifically for mid sized vehicles such as mini-vans, SUVs and mid-sized trucks with a V6 engine or a minimum towing capacity of 3000lbs.
http://escapetrailer.com/ 2004 Pontiac Montana Specs: Maximum Towing Capacity: 3500 lbs.
http://www.edmunds.com/used/2004/pontiac/montana/100311666/specs.htmlI am getting a 17 foot Taylor Coach, Canadian made in southern Ontario. Light weight considering it's size compared to a lot of other companies. I like the fact that it is made within driving distance (long mind you) of Ottawa in case I need to bring it back for any issues and I am suporting a Canadian company.
While my van was at Mr Transmission, I had them install a tranny oil cooler to support the max tow rate of my van which is 3500 lbs. The trailer weight, with the options I chose, should come in at around 2000lbs dry, which still leaves me with cargo weight for lugage, food, passengers and gear.