Please feel free to contact me with any questions.
Tri-Star Realty, LLC
I am a local Lender here in Las Vegas, NV.
We can do a VA IRRRL (streamline refinance) with no appraisal as long as the LTV (Loan to Value) is at a max of 125%. An AVM is ordered to determine the market value of the property.
A "No Appraisal" VA IRRRL can usually be done if its with the same Servicer, in your case with GMAC. Have you inquired with GMAC if they can do it?
All Western Mortgage