How do I calibrate touch screen
– Press TALK tab and take hold.
– Press GM PART tab.
– Release both tabs.
– The instrumenti will restart and will appear 5 signs (+) including 4 at the corners and one in the center of the display.
– Press on the center of the sign (+) from the left. The last sign (+) to select is the middle one.
– After this operation, the instrument will restart automatically.