Tie rod, Pitman and idler - PLEASE HELP

[ducati996]

All,

I have a 2003 H2 with only 46K miles on it...Now the delaer says that the Tie rod, Pitman and idler arm need to be changed and they are calling it wear and tear and not covered by my extended warranty..Its gonna cos me close to $1000 to get it fixed....

a) Should I cough up and pay for the fix?
b) get a 2007 model with the 4 year warranty and get back 2500 in rebates
c) wait for the 2008?

Is this a know issue with hummers? I have 20" wheels on my H2 and the delaer is blaming the oversized wheels for the damage...

I would appriceate your help

Thanks