Did you try Monaro repair manuals?
Best I could find was this...
Pontiac GTO, Commodore Monaro Repair Manual 1997-2004
May not help since it goes to 2004.
Don't quote me on this but I think the 02 sensor is located on the Power Train Control Module which is located in the engine bay driver side in front of the power brake booster etc.
How about LS 2 repair manual? Corvette repair LS2 engine?
Discount Car Parts Stuff - Auto Parts and Accessories Catalog - 2005 Chevrolet Corvette Paper Repair Manual Performance/Accessory
