I'll see if i can get any side pics on a level spot. I have the Suspension Maxx 1.5". I also have the Max trailering pkg with the rear load leveling. You can get the 2" spacers cheaper than the 1.5" so that sort of sucks, but I knew I never wanted the front higher than the rear.
And for me the alignment was required after the spacers.
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Your Tahoe looks great with the 1.5". Are you running the stock 275/55-20's or a size larger? For some reason the tires look a little larger than stock, but maybe it's just me....