Maybe my 1st problem

[hmrlvr]

Originally Posted by NEOCON1

they should have a loaner for you as soon as you drop it off , there should not be any wait . you might call ahead and see that they do have loaners available and tell them your on the way and save you one . maybe you will get a green one , i had a white one sorry man i bet your stressin over this , i know i was .

I was checkin out the last green one on the lot on Saturday, real nice

[Hmmm2]

Loaner = a GM car. Won't be a Hummer in S. Cal. Good luck! Bummer to drive a sedan after having a Hummer.

[hmrlvr]

Originally Posted by Hmmm3

Loaner = a GM car. Won't be a Hummer in S. Cal. Good luck! Bummer to drive a sedan after having a Hummer.

I'll just bring my 12 foot ladder in on my roof rack and see what they say when I try to cram it into a loaner sedan. I used to do that with my chevy truck so they would give me a truck . Unless of course the sedan is a caddy . Then no complaints

[f5fstop]

The noise could be caused by the clearance (lash) between some of the gears. It can be more pronounced in 4x4 systems due to more parts in the drivetrain.
However, the rough idle doesn't fit in, and may be a complete different problem.

[hmrlvr]

UPDATE.. all they said was "that doesn't sound good". In and out, 15 minutes with a brand new '07 CTS to drive. No complaints. Hope they find the problem soon though