How do you reset oil change light on a 88 olds toronado?

Yep, there are no hints given in the owner's manual.....but somehow I asked this question at the Dealer's service department when the car was new and wrote it down in my manual. The answer is that you press the "Engine Data" button until the display panel shows "Oil Life." Hold this and then simultaneously press "GAGE" for up to 5 seconds...and it will reset to "100%" You may have to try this a couple of times to get the right sequence, but it has worked for me for 17 years!! Rick in Rochester, NY