GMAC-Residential Funding Corp. is touting a new approach to automated valuation that it says will save lenders – and borrowers – time and money by significantly reducing the number of loans that require a full appraisal. “We are committed to transforming the mortgage industry by providing value for homeowners and competitive advantage for our lender clients,” said Dan Bettenburg, GMAC-RFC’s executive vice president for e-commerce, of a new