GM 20870559
Steering Gear

Rack And Pinion replacement starts with conducting the high voltage disabling procedure before testing for high voltage presence because neglecting this safety protocol can lead to fatal injuries. Place the vehicle's wheels directly ahead then lock down the Steering Wheel with an anti-rotation pin or Steering Column lock or secure strap to safeguard the sir system from damage. Avoid un-centering the sir coil assembly by maintaining both the Steering Wheel stationary and the front tires motionless during the disconnection of the Steering Column and intermediate shaft(s) and Rack And Pinion. The damaged Rack And Pinion harness needs replacement while protective covering must stay in place on the wiring harness until a proper position is achieved. Criminal operations should start with the tire and wheel assembly detachment followed by steaming out the steering shaft coupling bolt so the coupling can be separated from the Rack And Pinion. Disassemble the steering linkage outer tie rods by removing their outer tie rod nuts then discard these nuts before separating the tie rods from the steering knuckles. After installing jackstands under the Rack And Pinion remove both Rack And Pinion bolts and carefully extract the Rack And Pinion from the vehicle. Install the new Rack And Pinion onto its support fixture with jackstands while hand-tightening all bolts initially. Finish by adjusting right side bolts to 100 nm torque (74 lb ft) and left side bolts to 200 nm torque (148 lb ft). During installation connect the steering linkage outer tie rods to their positions on the steering knuckles and torque the new outer tie rod nuts to 60 nm (44 lb ft). The steering coupling needs installation between Rack And Pinion components while tightening the coupling bolt to 47 nm (35 lb ft) torque then reinstalling the front tire and wheel assemblies. Finish the power steering control module setup after running the high voltage enabling procedure.