For Trailblazer 20022009, Envoy 20022009, Trailblazer EXT 20022006, Envoy XL 20022006, Rainier 20042007, Bravada 20022004, Envoy XUV 20042005, Ascender 20032008, 97x 20052009 [Direct Replacement]Manufacturer Part Number 97x [Effortless Setup] Crafted by the manufacturers dedicated engineering team, this product is designed to mirror the original factory specifications with a precise 19 ratio. Its plugandplay architecture, complemented by stringent tolerance verifications, facilitates a straightforward and swift setup process, guaranteeing an impeccable match with your vehicle. [Silent and Smooth Operation] Utilizing highprecision CNC machining, the helical gear mechanism within the power steering rack is engineered for optimal perpendicularity, enhancing the smoothness of steering wheel maneuvers and promoting safer driving conditions. The integration of the steering rack with the vehicles chassis is meticulously done to negate any disturbances like noise and vibrations. [Safety Assured] The product has been subjected to comprehensive hydraulic pressure tests to verify that its internal bypass pathways are adequately designed to handle both high and low pressure scenarios, ensuring reliability and safety.