Overhead computer help

Just purchsed a 2000 Silhouette, trying to reset the computer in the overhead console for the fuel consumed after i filled the tank. Any help will be great
Thanks

Press the mode button until the display you want to clear is displayed, then press and hold both buttons until it clears.

Press the mode button until the display you want to clear is displayed, then press and hold both buttons until it clears.
Thank you, Thank you. That was driving me nuts - not knowing exactly how much fuel i have used after filling up