EXHIBIT 99.1 GCCFC 2005-GG5 Class: A4B -------------------------------------------------------------------------------------------------------------- CDR 0.00% 3.00% 3.00% 4.00% -------------------------------------------------------------------------------------------------------------- CPR 0% 5% 5% 5% -------------------------------------------------------------------------------------------------------------- CPY 0% 100% 100% 100% -------------------------------------------------------------------------------------------------------------- CDR Months Delay 0 12 24 12 -------------------------------------------------------------------------------------------------------------- Recovery Delay 0 12 12 12 -------------------------------------------------------------------------------------------------------------- Loss Severity 0% 35% 35% 35% -------------------------------------------------------------------------------------------------------------- Ext Mths 0 0 0 0 -------------------------------------------------------------------------------------------------------------- Ext % 0% 0% 0% 0% -------------------------------------------------------------------------------------------------------------- Balance 75,000,000 WAL 6.83 6.44 6.44 6.37 Principal Window Jul 2012 - Jan 2013 Apr 2012 Apr 2012 Nov 2011 - Apr 2012 Window in Months 80 - 86 77 77 72 - 77 50,000,000 WAL 6.90 6.44 6.44 6.44 Principal Window Jul 2012 - Jan 2013 Apr 2012 Apr 2012 Apr 2012 Window in Months 80 - 86 77 77 77 25,000,000 WAL 7.05 6.44 6.44 6.44 Principal Window Sep 2012 - Jan 2013 Apr 2012 Apr 2012 Apr 2012 Window in Months 82 - 86 77 77 77 --------------------------------------------------------------------------------------- CDR 4.00% 4.00% 4.00% --------------------------------------------------------------------------------------- CPR 5% 10% 10% --------------------------------------------------------------------------------------- CPY 100% 100% 100% --------------------------------------------------------------------------------------- CDR Months Delay 24 12 24 --------------------------------------------------------------------------------------- Recovery Delay 12 12 12 --------------------------------------------------------------------------------------- Loss Severity 35% 35% 35% --------------------------------------------------------------------------------------- Ext Mths 0 0 0 --------------------------------------------------------------------------------------- Ext % 0% 0% 0% --------------------------------------------------------------------------------------- Balance 75,000,000 WAL 6.44 6.31 6.44 Principal Window Apr 2012 Oct 2011 - Apr 2012 Apr 2012 Window in Months 77 71 - 77 77 50,000,000 WAL 6.44 6.44 6.44 Principal Window Apr 2012 Apr 2012 Apr 2012 Window in Months 77 77 77 25,000,000 WAL 6.44 6.44 6.44 Principal Window Apr 2012 Apr 2012 Apr 2012 Window in Months 77 77 77 No securities are being offered by these summary materials. 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