avalance frontend question
 

Guys,
I'm very mechanically challanged. Took my 2004 Z71 in for new tires. Trax told me I had some worn out frontend parts that needed to be replaced. The truck does pull to the right, even after being aligned. The truck has 105,000 miles. What parts should I have checked for wear. Just wanted to be prepared for what the mechanic throws at me.