TUSCANY GM 1500 UPPER CONTROL  ARM -  BALL JOINT SERVICE & REPLACEMENT INFORMATION:

With regular greasing and service, expect a long life from these upgraded upper control arms. If the ball joints do become worn they can be replaced with a new ball joint (Part # 500-1105), unlike an OE control arm. Contact the following service e-mail at ucaservice@ridefox.com including the last 8 digits of your VIN to identify your vehicle. Note for new ball joint installation the provided replacement ball joint is directional and must be installed with the ‘dot’ facing either inward or outward 90 degrees from the pivot location as shown below, otherwise damage may occur. Follow instructions provided with the new 500-1105 ball joint for proper installation.