It might be a little helpful if you specify what you're trying to mount them under. If you have a 2wd work truck then probably not. :D
That's a pretty big tire for these trucks I think. You'll be looking at a full suspension lift as well as a body lift I THINK. I can't be sure, but I've read a ton of threads of peeps who have larger tires. Hunt around in the lifts and the tire section and you should get some ideas until people start chiming in and repeating themselves.
It would help if you mentioned what suspention you have... W/T,Z71, Z85? Are you 2wd or 4wd? What year is the truck? There is a 5 inch kit here for the z71 PerformanceLifts.com -- CST Colorado & Canyon 5" Lift Kit - 4wd & Z-71 Only! that clear 34's, add a tb crank or 1.5 inch body lift and 35"s are possible I would think. Might require a little trimming. The CST is only available for the '04-'08 models. There are also a couple of 4 inch kits, Rancho and Tuff Country... either one of these with a 3 inch body lift and a tb crank might clear 35's. But I think these kits are for the Z71 2wd or 4wd or they might work for the z85 4wd. If your running the 4 banger, then well 35's are pretty big. And you may want to consider 4:10 gears with tires that big
from reading your posts, you have a torsion bar setup. With that being said, to clear 35s, you need a minimum of 7-8" of lift.
You can do this with a 4" lift kit and a 3" body lift, a 5" lift kit and a 1.5" body lift and some cranking/cutting. OR a full crank on your bars, a body lift and some serious cutting.
Offset/backspacing of your rims will play a roll on this as well.
Engine size will also play a role as well as gears in the axel. If you have 3.73s and a 3.5, you will need a tune to be happy with how it runs on the road (highways). If you have a 4 cylinder, I would give you advice of not doing it unless you swapped to some high gears since you won't be able to turn them very well with that size engine.
Lots of variables that you haven't posted (as others have said)...
Also from reading your posts, if you want to do this cheaply, good luck depending on your opinion of cheap.