Workshop Repair and Service Manuals GMC SIERRA
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Upper Control Arm Replacement (2500 3500) Control Arms Upper Control Arm

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Special Tools

J-42188–BBall Joint Separator

For equivalent regional tools, refer toSpecial Tools

Removal ProcedureRemove the tire and wheel. Refer toTire and Wheel Removal and Installation.

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Lower the vehicle and support the lower control arm.Remove the front shock absorber. Refer toShock Absorber Replacement.Loosen the upper ball joint nut, but DO NOT remove.

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Using theJ-42188–Bseparator, remove the upper control arm from the steeringknuckle.Remove theJ-42188–Bseparatorand the upper ball joint nut. Discard the nut and replacewith NEW only.

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Remove the upper control arm nuts-(1),(6)-and the adjustment cams-(2), (5).Remove the adjuster bolts-(3), (4).

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Remove the upper control arm-(1)-fromthe frame.Installation Procedure

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Position the upper control arm-(1)-inthe frame.

Upper Control Arm Replacement (2500, 3500) Control Arms Upper Control Arm

Install the upper control arm bolts-(3), (4) andthe adjusters-(2), (5).

Caution:Refer toFastener Caution.

Install the upper control arm nuts-(1), (6) andtighten to260-Y(192-lb-ft).Install the upper control arm to the steering knuckle.Install the NEW nut to the upper ball joint stud and tightento50-Y(37-lb-ft).Install the front shock absorber. Refer toShock Absorber Replacement.Raise the vehicle and remove the support for the lowercontrol arm.Install the tire and wheel. Refer toTire and Wheel Removal and Installation.Verify the wheel alignment. Refer toWheel Alignment Specifications.
Upper Control Arm Ball Joint Inspection Suspension Ball Joints     Special Tools J-8001Dial Indicator Set For equivalent regional tools, refer toSpecial Tools. Note: The vehicle must rest on a level surface.The vehicle must be stable. Do not rock the vehicle on thefloor stands.This...
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