Front Upper Control Arm Pair & Ball Joints for Trailblazer Envoy Rainier 9-7X

Front Upper Control Arm Pair with Two Upper Ball Joints

Four-piece front suspension kit for the specific Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab applications listed below. The package includes driver- and passenger-side upper control arms plus two separate upper ball joints.

Fitment warning: The available source does not specify 2WD/AWD/4WD restrictions, engine, trim, suspension package, production-date breakpoints, or reference numbers. Compare the original arms and ball joints for left/right shape, mounting points, bushing design, ball-joint flange or stud configuration, taper, and steering-knuckle connection. Verify by VIN before ordering.

Vehicle Compatibility

Buick

• 2004–2007 Rainier

Chevrolet

• 2003–2006 SSR
• 2002–2009 Trailblazer
• 2002–2006 Trailblazer EXT

GMC

• 2002–2009 Envoy
• 2002–2006 Envoy XL
• 2004–2005 Envoy XUV

Isuzu

• 2003–2008 Ascender

Oldsmobile

• 2002–2004 Bravada

Saab

• 2005–2009 9-7X

Package Contents

• One front upper control arm assembly — driver side
• One front upper control arm assembly — passenger side
• Two front upper ball joints
• Total: Four front suspension components

The ball joints are listed as separate components rather than explicitly pre-installed in the control arms. Control-arm bushings, ball-joint fasteners, mounting bolts, nuts, cotter pins, and other installation hardware are not separately confirmed.

Common Control Arm and Ball Joint Symptoms

• Clunking or knocking over bumps
• Steering wander or unstable handling
• Uneven or accelerated front tire wear
• Excess movement at an upper control-arm bushing or ball joint
• Alignment that will not remain within specification

Similar symptoms may also be caused by lower ball joints, tie rods, struts or shocks, wheel bearings, sway-bar links, tires, or alignment. Inspect the complete front suspension and steering system before replacement.

Installation Notes

Professional installation is strongly recommended. Support the vehicle safely and inspect the frame mounting points, fasteners, steering knuckles, lower control arms, tie rods, struts or shocks, sway-bar links, CV axles where equipped, and wheel bearings. Follow the vehicle manufacturer’s ball-joint and control-arm torque procedures. Where required, tighten bonded-rubber bushing fasteners at normal ride height to avoid preloading the bushings. Install cotter pins and locking hardware where specified. A four-wheel alignment should be performed after installation, followed by a controlled low-speed safety check.

Frequently Asked Questions

Are both sides included?
Yes. The source confirms one driver-side and one passenger-side front upper control arm.

Are upper ball joints included?
Yes. Two upper ball joints are listed as separate package components.

Does this fit every drivetrain?
The source does not state drivetrain restrictions. Verify the VIN and original suspension configuration before ordering.