Reset oil change light on 2004 Oldsmobile Alero or Bravada w/o (DIC) Driver Information Center

Hello, it depends on whether or not you have the Driver Information Center (DIC). I'll send you both ways.

Without the DIC, turn the key to the ON position and depress the gas pedal 3 times within 5 seconds, the light will flash, turn the key off.
With the DIC, turn the key to the ON position, press the Fuel Information button repeatedly until OIL LIFE is displayed, press and hold the button with the arrow pointing left until 100% is displayed. Turn the key to off.

A diagnostic scanner that reads OBD1 (the system by which your vehicle processes trouble codes) will be required, many parts stores do this a s a free service. Check with them to see if they charge. Remember though, when they read the car and turn the light off that in order for the light to stay off, the problem must be fixed. Even if it was a one time fluke of a problem, get the code that their scanner gives them so that you know what the issue is.

oh thats the change oil light expect it every 3500 to 4500 miles they glow.. you can usually reset it by holding down the trip button with the car off and then turn the key to the II position where everything lights up
so read me >>>>>
Buick Rainier 2004-06, Buick Rendezvous 2002-05 w/o (DIC) Driver Information Center
Turn the ignition to ON without starting the engine. Fully press and release the accelerator pedal three time in five seconds. If the CHANGE OIL SOON’ indicator flashes two times, the system is resetting. Turn the key to OFF, then start the vehicle. If the CHANGE OIL SOON indicator comes on and stays on for five seconds, repeat the procedure.
Buick Rainier 2004-05 wI (DIC) Driver Information Center
The DIC display is located on the instrument panel cluster above the steering wheel. The DIG buttons are located on the steering wheel. Press button with the gas pump symbol to display engine oil life. Press button with the arrow symbol to reset engine oil life display.
Buick Rendezvous 2002-06 wI (DIC) Driver Information Center
To reset Service Reminder Indicator, turn ignition on with engine not running. Press the MODE button until DIC reads oil life left hold SET to reset. Press and hold the SET button until 100% is displayed. You will hear three chimes and the change oil message will go out. If the CHANGE ENGINE OIL’ message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

Try disconnecting the battery