SCITOO Front Ball Joint Kit for Chevy/GMC 1999–2006 — 4‑Piece Pre‑Greased Direct‑Fit to Restore Steering Precision

SCITOO 4-piece front suspension kit replaces the upper and lower ball joints to restore steering precision and front-end stability on compatible Chevy, GMC and Cadillac trucks and SUVs.

Designed as a direct-fit replacement set, this SCITOO kit contains two front upper ball joints (K6540) and two front lower ball joints (K6541). It is made for a range of 1999–2006 Chevrolet and GMC 1500-series trucks and related SUVs and vans, and provides pre-greased components to simplify installation. The parts match factory mounting points and help return worn front suspension geometry to spec when ball joints are the source of looseness, vibration or uneven tire wear.

Which vehicles does this SCITOO front suspension kit fit?

This kit covers many Chevrolet, GMC and Cadillac models across model years 1999–2006, including 4WD and AWD variants of half-ton trucks and several SUVs and vans. Always confirm Year/Make/Model/Trim before ordering to ensure compatibility.

• Chevrolet Silverado 1500 (1999–2006) — 4WD/AWD
• Chevrolet Tahoe (2000–2006) — 4.8L & 5.3L V8 compatibility noted for 2000
• Chevrolet Suburban 1500, Avalanche 1500, Express 1500/2500 — various years listed
• GMC Sierra 1500, Yukon, Yukon XL 1500, Savana models and Cadillac Escalade/Ext/Esv variants covered

What parts are included and how are they prepared for installation?

The SCITOO kit contains the essential ball joints for the front suspension: two upper and two lower. Each component is pre-lubricated at the factory to reduce initial break-in and to make the installation process more straightforward for DIYers and professional technicians alike.

• Includes (2) K6540 front upper ball joints and (2) K6541 front lower ball joints
• Pregreased components help shorten install prep time
• Direct-fit design aligns with original mounting points for a straightforward swap

How will replacing these ball joints affect vehicle handling and wear?

Fresh ball joints remove play in steering and suspension linkages, which improves directional control and helps even out tire contact patch wear. While this kit addresses the ball-joint elements of the front suspension, full alignment after installation is recommended to return steering geometry to factory specification.

• Reduces steering looseness and front-end wander
• Mitigates uneven tire wear caused by worn joints
• Recommended wheel alignment after installation for best results

Are there other suspension parts I should consider when doing this repair?

When ball joints show wear, neighboring components—control arms, tie rod ends, sway bar links, pitman and idler arms—can also have similar service life. SCITOO offers full suspension kits and many replacement components so you can address related wear items during the same service interval.

• Inspect control arms, tie rod ends and sway-bar links during service
• Consider a full suspension kit if multiple components are aged
• All SCITOO suspension parts are available pregreeased for convenience

Who is this for: This SCITOO 4-piece front ball joint kit is intended for owners and technicians working on 1999–2006 Chevy, GMC and Cadillac half-ton trucks, SUVs and vans who need a direct-fit replacement for worn upper and lower front ball joints. It’s well suited for DIY mechanics comfortable with suspension work and professionals seeking pre-greased, OE-style components to restore steering response and reduce front-end play.