Envoy, Trailblazer 2.5" lift kit. Chevy Envoy, GMC Trailblazer, Isuzu 2.5" lift kit: Envoy, Trailblazer 2.5" lift kit. 2WD, 4WD: $200.25. 402010 TX: More Info: ReadyLift offers a lift kit to level your Envoy or TrailBlazer using front and rear spacers. Advanced technology and innovative research are mainstays of the ReadyLift brand.