GM 1627757
Control Arm Bushing, Rear

Vehicle maintenance begins with vehicle raising and support followed by tire removal along with wheel assembly and brake bracket retainers. Before changing the right side bushing users should detach both the shock tower bracket with the road sensing suspension position sensor while also lowering down their exhaust system and heat shield. Underneath the rear suspension support forward arm install a screw jack before taking out the forward arm nuts and bolts while watching for brake caliper, hose and pipe positions to prevent damage. Replace the Control Arm Bushing set (J21474-01) between forward arm flanges when the arm falls to its lowest position at 12.7 cm (5 inches). Apply high pressure lubricant on screw assembly (J21474-19) threads before installing the Control Arm Bushing set (J21474-01), bushing receiver (J21474-5), long nut (J21474-18) and screw assembly (J21474-19). Pull the bushing out of the forward arm through tight nut rotation. Place the new bushing on the forward arm where its flange notches match the 12 o'clock and 6 o'clock positions and install it with the outboard side looking in. Use the Control Arm Bushing set (J21474-01) one more time. Then add high pressure lubricant to the threads of the screw assembly (J21474-19). Place and tighten the Control Arm Bushing set (J21474-01), bushing receiver (J21474-5), long nut (J21474-18), and screw assembly (J21474-19) to push the bushing inside the forward arm until its flange settles into place. Before elevation first confirm the suspension insulator alignment looks correct before slowly lifting the support to match it with the body while repeating any brake modifications if required. The installation continues with forward arm bolts, nuts, and washers which secure the suspension support while right side nuts reach 63 nm (46 ft. Lbs.) and left side bolts attain 102 nm (75 ft. Lbs.) and upper mounting bolts require 102 nm (75 ft. Lbs.). On completion put the tire and wheel assemblies back on then lower the vehicle. Reinstall the exhaust system and heat shield and reconnect the road sensing suspension position sensor and bracket. Afterward install the brake bracket retainer screw.

Vehicle repair for control arm bushings begins when technicians raise the car followed by wheel assembly removal. First disconnect the road sensing suspension position sensor and bracket from the shock tower by removing the brake bracket retainer screw. The right side bushing replacement requires drivers to lower their exhaust system and heat shield. Install the screw jack under the rear suspension support forward arm then remove the forward arm nuts and bolts while keeping an eye on Brake Calipers and hoses and pipes to avoid damage. Use this procedure to gain 5 inches of clearance for a tool then insert (J 21474-01) tool between the forward arm flanges. High pressure lubricant needs to coat the threads of the (J21474-19) before you can install (J21474-01), (J21474-5), (J21474-18) and (J21474-19) to draw the bushing out of the forward arm through nut tightening. Place the new bushing onto the forward arm while keeping its flange notches at the 12 o'clock and 6 o'clock positions during installation. Make sure to approach from the outboard side before drawing the bushing inward. Reinstall tool (J21474-01) followed by threading high pressure lubricant onto (J21474-19) before using the same tools to pull the bushing into the forward arm until it forms a firm sealing contact with the arm. Slowly lift up the suspension support as you align it to the body while ensuring you reposition impacted brake components. The suspension support forward arm requires bolts, nuts, and washers for installation with the right side nut tightened to 63 nm (46 ft. Lbs.), left side bolt tightened to 102 nm (75 ft. Lbs.) and upper mounting bolts tightened to 102 nm (75 ft. Lbs.). The process involves removing screw jacks while reinstalling the exhaust system and heat shield along with reconnecting the road sensing suspension position sensor and bracket and installing the brake bracket retainer screw until the vehicle's tires and wheels can be safely reinstalled before lowering the vehicle back to the ground.

Install the Bushing Set (J21474-01), Bushing Receiver (J21474-5), Long Nut (J21474-18), and Screw Assembly (J21474-19), then tighten the nut.