The mileage would typically be stored in the cluster. I wouldn't say for sure unless someone has actually done this. I looked in the GM service info and it didn't say either way.
__________________ Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5