A method to provide clearance control for a gas turbine having a multi-stage compressor and a turbine having turbine buckets rotating within a turbine shell, the method includes: selecting a first compressor stage from which to extract compressed air; ducting the compressed air from the first compressor stage to the turbine shell; passing the compressed air from the first compressor stage to thermally contract the turbine shell; selecting a second compressor stage from which to extract compressed air and deselecting the first compressor stage; ducting the compressed air from the second compressor stage to the turbine shell, and passing the compressed air from the second compressor stage to thermal expand the turbine shell.