How can I turn off the Change oil soon message after changing my oil?

If it'* an '02 LeSabre/Park Avenue:

GM Oil Life System Resetting
Resetting Procedure

Follow this procedure to reset the GM Oil Life System ™:

1. Display OIL LIFE INDEX on the DIC.
2. Press and hold the RESET button on the DIC for more than five seconds. The oil life will change to 100%.

'02 Century or Regal:


GM Oil Life System Resetting
Resetting Procedure

Follow this procedure to reset the GM Oil Life System. ™:

1. Turn the ignition to RUN but the engine off.
2. Fully press and release the accelerator pedal slowly three times within five seconds.
3. If the CHANGE OIL SOON light flashes, the system is resetting.
4. Turn the key to OFF.
5. Start the vehicle.
6. The oil life will change to 100%.
7. If the Change Oil Soon light come back on, the system has not reset. Repeat the procedure.

With Driver Information Center (DIC)

1. Put the oil life display ON, with the engine off.
2. Press the DIC RESET button for five seconds.

This is a 2002 Buick Redevous that does not have Oil Life system feature.
I have tried turning on key but not starting engine and depress accellorator to the floor and releasing within 5 seconds, then turn engine on. The Change Oil Soon light flashes only once, not the 2 times I have read about.
I bought this vehicle used in 2005 and there was no manual with it.

Here is a link to the owners manual for your 2002 Buick...

http://www.extendedgmwarranty.com/ow...Rendezvous.pdf

For '02 Rendezvous (FWD, AWD):

GM Oil Life System Resetting
No Driver Information Center (DIC)

Follow this procedure to reset the GM Oil Life System ™:
If your vehicle does not have the optional Driver Information Center (DIC) do the following:

1. With the ignition key in ON but the engine off, fully push and release the accelerator pedal slowly three times within five seconds.
2. Turn the key to OFF.
3. If the CHANGE ENGINE OIL message come back on, the engine oil life monitor has not reset. Repeat the procedure.

Optional Driver Information Center (DIC)

Follow this procedure to reset the GM Oil Life System™:

1. Turn the ignition to ON with the engine off.
2. Press the MODE button until the DIC reads OIL LIFE LEFT/HOLD SET TO RESET.
3. Press and hold the SET button until 100 percent is displayedYou will hear three chimes and the CHANGE ENGINE OIL message will go off. If the CHANGE ENGINE OIL message come back on, the monitor has not reset. Repeat the procedure.