This heavy duty upper steering shaft assembly connects the factory steering column to the lower steering shaft for direct fit replacement on compatible vehicles. It includes a vibration reducing universal joint and is designed as a rack and pinion steering pinion shaft to restore secure steering linkage and reduce driveline feedback. Key benefits Direct fit replacement for the factory steering column to lower shaft connection to simplify installation and reduce labor time. Built heavy duty to withstand demanding use and restore solid steering feel. Includes a vibration reducing universal joint and Vibration Reducer to improve conversion rates, reducing vibration transfer into the steering column. Exact part identification provided: Part Number 937, Upper Steering Shaft 937, Product Grade Heavy Duty, Part Type Rack and Pinion Steering Pinion Shaft. Important attributes Function: Connects factory column to lower steering shaft; includes vibration reducing universal joint. Compatibility: For Cadillac Escalade 2000 and 20022006; Escalade EXT 20022006; for Chevy Tahoe 20002006; for 1500 and 2500 models 20022006. Please check Fitment Filter for vehicle compatibility before . Performance: Heavy duty construction with vibration reduction features to help improve steering input translation and reduce column vibration. Identification: Part Number 937 for accurate replacement and fit verification. Use scenarios a worn or damaged upper steering shaft during routine steering system to restore secure connection between the steering column and lower shaft. Install as a heavy duty replacement when vehicles are used for towing or carrying heavier loads to help maintain steering responsiveness under strain. Swap in the assembly to reduce steering column vibration and improve driver comfort after experiencing excessive feedback or looseness. Notes for buyers Confirm vehicle year and model compatibility using the Fitment Filter before ordering. This listing covers the specified part number and fitments only. If unsure about fitment, verify the original part number on the vehicle prior to installation.