Installation Procedure

Install the upper control arm.
Install the upper control arm bolts (4) for the 25/35 Series 4WD.
CAUTION: Refer to FASTENER NOTICE .
Install the upper control arm nuts and the adjustment cams (2) 25/35 Series 4WD.
Tighten

Tighten the nuts to 190 N.m (140 lb ft).

Fig 1: Installing Upper Control Arm (25/35 Series)
Courtesy of GENERAL MOTORS CORP.
Install the upper control arm bolts (4) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.
Install the upper control arm nuts and the adjustment cams (2) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.
Tighten

Tighten the nuts to 190 N.m (140 lb ft).

Fig 2: Installing Upper Control Arm (15 Series)
Courtesy of GENERAL MOTORS CORP.
Connect the upper control arm to the steering knuckle.
Install the wheel drive shaft. Refer to AXLE SHAFT , AXLE SHAFT or AXLE SHAFT .
Install the new nut to the upper ball joint stud.
Tighten

Tighten the nut to 50 N.m (37 lb ft).
Install the retaining bolts for the brake hose and wheel speed sensor brackets.
Tighten

Tighten the bolts to 9 N.m (80 lb in).

Fig 3: Installing Brake Hose Bracket

Courtesy of GENERAL MOTORS CORP.

Connect the RTD link rod to the sensor, if equipped. Refer to FRONT POSITION SENSOR LINK ASSEMBLY REPLACEMENT - ELECTRONIC SUSPENSION .
Install the tire and wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
Remove the safety stands.
Lower the vehicle.
Verify the wheel alignment. Refer to SPECIFICATIONS .