[bouncytruck]

Squatty-butt is a common issue with Blazers. Some run 6" lift in the rear and 4" in the front. This usually gives the rig a slight rake rather than the squat. Helper springs might give you some more height in the rear, but it will stiffen up the ride some. If your truck still has the stock rear springs with the blocks, it could be the springs are worn or need to be re-arched.